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5/20/2010




Title-24 Building Energy Standards


                          Energy Code Works, Inc.


   Mark Madison
   CEPE, CEA, AEE, HERS Rater,
   GreenPoint Rater, ResNet Rater, Member CABEC, CHEERS




        Housekeeping

                AIA CES credits:

    1           3 HSW (Health Safety & Welfare)
                3 SD (Sustainable Design)




                           2    ©2010 Energy Code Works, Inc.




                                                                       1
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                          Beyond Title-24

Advanced Title-24 scope:
     Why go beyond Title-24?
     How do you get beyond Title-24?




                                                        3       ©2010 Energy Code Works, Inc.




                          Beyond Title-24

Why Beyond Title-24?
     Incentives and requirements (carrots & sticks)
          Carrots:
                Utility incentive programs
                PV incentives (NSHP)
                Energy-Star
                LEED
          Sticks
                Cities requiring better than Title-24 compliance
                Energy efficient mortgages
          Self-motivated designers/builders
                Title-24 energy code = just barely legal




                                                        4       ©2010 Energy Code Works, Inc.




                                                                                                       2
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                          Beyond Title-24

Why Beyond Title-24?
     Incentives and requirements (carrots & sticks)
          Carrots:
                Utility incentive programs
                PV incentives (NSHP)
                Energy-Star
                LEED




                                              5   ©2010 Energy Code Works, Inc.




                          Beyond Title-24

Why Beyond Title-24?
     Incentives and requirements (carrots & sticks)
          Carrots:
                Utility incentive programs
                PV incentives (NSHP)
                Energy-Star
                LEED




                                              6   ©2010 Energy Code Works, Inc.




                                                                                         3
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                          Beyond Title-24

Why Beyond Title-24?
     Incentives and requirements (carrots & sticks)
          Carrots:
                Utility incentive programs
                PV incentives (NSHP)
                Energy-Star
                LEED




                                              7   ©2010 Energy Code Works, Inc.




                          Beyond Title-24

Why Beyond Title-24?




                                              8   ©2010 Energy Code Works, Inc.




                                                                                         4
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                          Beyond Title-24

Why Beyond Title-24?
     Incentives and requirements (carrots & sticks)
          Carrots:
                Utility incentive programs
                PV incentives (NSHP)
                Energy-Star
                LEED




                                                      9       ©2010 Energy Code Works, Inc.




                          Beyond Title-24

Why Beyond Title-24?
     Incentives and requirements (carrots & sticks)
          Sticks
                Cities requiring better than Title-24 compliance
                Energy efficient mortgages




                                                     10       ©2010 Energy Code Works, Inc.




                                                                                                     5
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                          Beyond Title-24

Why Beyond Title-24?
     Incentives and requirements (carrots & sticks)
          Sticks
                Cities requiring better than Title-24 compliance
                Energy efficient mortgages




                                                       11       ©2010 Energy Code Works, Inc.




                          Beyond Title-24

 How do you get beyond Title-24?
     Challenges:
     New 2008 Title-24 Building Energy Standards 15-22% more
      restrictive, tougher than current 2005 energy code.
     Many energy credits in 2005 standards are now baseline for 2008
      energy code
     New 2008 energy code introduces additional layers of compliance
      criteria, forms, paperwork




                                                      12        ©2010 Energy Code Works, Inc.




                                                                                                       6
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                           Beyond Title-24

 How do you get beyond Title-24?
     Opportunities:
     35% better than 2005 Title-24 has been achievable.
     2008 Title-24 energy code contains new credits
     Building industry has reacted to carrots and sticks
          Insulation products
          Radiant Barriers
          Cool Roofs
          HVAC efficiencies
          Window/doors products
          NFRC testing
          Tank less water heaters




                                                13     ©2010 Energy Code Works, Inc.




                       Scope of this Class



                      1        Changes to Envelope Requirements


                      2         Changes to HVAC Requirements


                      3         New Residential Lighting Requirements


                      4        Impact of Time Dependant Valuation (TDV)




                                                14     ©2010 Energy Code Works, Inc.




                                                                                              7
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                   Scope of this Class



                  5        Beyond Title-24: Envelope


                  6        Beyond Title-24: HVAC


                  7        Beyond Title-24: HERS Measures


                  8        SDG&E’s Incentive Programs




                                             15     ©2010 Energy Code Works, Inc.




      2008 Building Energy Standards

Effective date: January 1, 2010

     Projects permitted prior to January 1, 2010 will continue to use
      2005 energy code




                                             16     ©2010 Energy Code Works, Inc.




                                                                                           8
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       2008 Building Energy Standards

  Effective date: January 1, 2010




                                17   ©2010 Energy Code Works, Inc.




       2008 Building Energy Standards
 Future of Title-24




                                18   ©2010 Energy Code Works, Inc.




                                                                            9
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       2008 Building Energy Standards
 Future of Title-24




                         19   ©2010 Energy Code Works, Inc.




       2008 Building Energy Standards
 Future of Title-24




                         20   ©2010 Energy Code Works, Inc.




                                                                    10
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       2008 Building Energy Standards
 Future of Title-24




                                        21     ©2010 Energy Code Works, Inc.




                Scope of this Class



               1       Changes to Envelope Requirements


               2       Changes to HVAC Requirements


               3       New Residential Lighting Requirements


               4       Impact of Time Dependant Valuation (TDV)




                                        22     ©2010 Energy Code Works, Inc.




                                                                                     11
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       Compliance Paths

      Two compliance paths available




       Prescriptive     Performance




                             23        ©2010 Energy Code Works, Inc.




       Compliance Paths

  Two compliance paths available


               Mandatory
               Measures




      Prescriptive    Performance
Prescriptive               Performance
   Path                        Path

                             24        ©2010 Energy Code Works, Inc.




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      Compliance Paths

    Advantages/Disadvantages


               Mandatory
               Measures




      Prescriptive       Performance
Prescriptive                  Performance
   Path                           Path

                                25      ©2010 Energy Code Works, Inc.




       Building Envelope


               Walls, floors, ceiling assemblies




               Windows, glass doors, skylights




               When required, testing and
               certification, & labeling
               requirements, where required.




                                26      ©2010 Energy Code Works, Inc.




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Building Envelope

     Current 2005 Prescriptive
     Requirements




                  27        ©2010 Energy Code Works, Inc.




Building Envelope

    New 2008 Prescriptive
    Requirements




                  28        ©2010 Energy Code Works, Inc.




                                                                  14
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     Building Envelope

              New 2008 Prescriptive
              Requirements



Bottom Line:
Prescriptive insulation levels remain essentially
unchanged from 2005 standards

Big change…..Fenestration requirements




                             29       ©2010 Energy Code Works, Inc.




     Building Envelope

              Current 2005 Prescriptive
              Requirements




                             30       ©2010 Energy Code Works, Inc.




                                                                            15
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              Building Envelope

                       New 2008 Prescriptive
                       Requirements




                                        31   ©2010 Energy Code Works, Inc.




              Building Envelope

                       Windows, glass doors, skylights




Two allowable methods for determining window & door
performance:
    NFRC procedures/labels or…

   Use default tables (116-a & 116-b)




                                        32   ©2010 Energy Code Works, Inc.




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Building Envelope

    Windows, glass doors, skylights




                  33     ©2010 Energy Code Works, Inc.




Building Envelope




                  34     ©2010 Energy Code Works, Inc.




                                                               17
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Building Envelope




                  35     ©2010 Energy Code Works, Inc.




Building Envelope

    Windows, glass doors, skylights




                  36     ©2010 Energy Code Works, Inc.




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Building Envelope

       Windows, glass doors, skylights



Default tables 116-a & 116-b




                     37     ©2010 Energy Code Works, Inc.




Building Envelope

       Windows, glass doors, skylights



    2008 Package D




                     38     ©2010 Energy Code Works, Inc.




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Building Envelope

       Windows, glass doors, skylights



Package D vs. Default tables (U-factor)




                     39     ©2010 Energy Code Works, Inc.




Building Envelope

       Windows, glass doors, skylights



Package D vs. Default tables (SHGC)




                     40     ©2010 Energy Code Works, Inc.




                                                                  20
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Building Envelope

    Windows, glass doors, skylights



    Package D vs. NFRC labels




                  41     ©2010 Energy Code Works, Inc.




Building Envelope

    Windows, glass doors, skylights



    Bottom Line:

    Prescriptive U-factor requirements
    almost 30% more stringent than
    2005 code

    2008 Standards will force you to
    use NFRC Labels

    Significant penalty for using default
    tables

                  42     ©2010 Energy Code Works, Inc.




                                                               21
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Building Envelope

    When required, where required,
    testing, certification & labeling


    In 2008 code required
    prescriptively in all climate zones
    New, addition & alterations




                   43      ©2010 Energy Code Works, Inc.




Building Envelope

    When required, where required,
    testing, certification & labeling


         Energy Star Cool Roof does not
         qualify in California

         Must be certified & labeled by the
         Cool Roof Rating Council




                   44      ©2010 Energy Code Works, Inc.




                                                                 22
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               Building Envelope

                         When required, where required,
                         testing, certification & labeling


Exemptions to cool roof requirement:
   Roof areas covered by building integrated photovoltaic panels and
   solar hot water panels and roofs with existing roof ballasts w/weight
   of 25 lb/ft2 are exempted from cool roof requirement.




                                         45      ©2010 Energy Code Works, Inc.




               Scope of this Class



              1      Changes to Envelope Requirements


              2      Changes to HVAC Requirements


              3      New Residential Lighting Requirements


              4      Impact of Time Dependant Valuation (TDV)




                                         46      ©2010 Energy Code Works, Inc.




                                                                                       23
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    HVAC


Minimum AFUE, SEER, EER

SEER vs EER


Prescriptive requirement
No prescriptive alternatives
HVAC change-outs


Refrigerant Charge Measurement
Cooling Coil Airflow
Fat Watt Draw




                47      ©2010 Energy Code Works, Inc.




    HVAC
  Appliance Efficiency Regulations
  set HVAC efficiency minimums in
  Prescriptive Packages




                48      ©2010 Energy Code Works, Inc.




                                                              24
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 HVAC
Prescriptive Packages refer to
Appliance Efficiency Regulations
minimums




              49    ©2010 Energy Code Works, Inc.




 HVAC

Minimum AFUE, SEER, EER

SEER vs EER




              50    ©2010 Energy Code Works, Inc.




                                                          25
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   HVAC

 Minimum AFUE, SEER, EER

 SEER vs EER



Questions:

What is the difference between
EER and SEER?

Why does it matter?




               51     ©2010 Energy Code Works, Inc.




   HVAC

 Minimum AFUE, SEER, EER

 SEER vs EER



EER is measured at 80 degrees
indoor air running continuously

SEER is measured by using the
EER and factoring in the same unit
running under a lighter load (80
degrees indoor, 82 degrees
outdoor and cycling on and off




               52     ©2010 Energy Code Works, Inc.




                                                            26
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   HVAC

 Minimum AFUE, SEER, EER

 SEER vs EER

Why this matters:

Possible for two units with the same
SEER to have different EERs

For two units with a given SEER the
one with the higher EER will be more
efficient

EER’s higher than 10 require HERS
verification

Take time to verify SEER and EER

                 53      ©2010 Energy Code Works, Inc.




   HVAC

 Minimum AFUE, SEER, EER

 SEER vs EER

Why this matters:

EER higher than 10 will trigger a
HERS credit in the Title-24 compliance
calculations

Will also appear on the CF-1R as a
HERS measure required verification
and a CF-4R




                 54      ©2010 Energy Code Works, Inc.




                                                               27
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   HVAC

 Minimum AFUE, SEER, EER

 SEER vs EER



Bottom Line:
Minimum efficiency levels remain
essentially unchanged from 2005
standards. EER more important

Big change…..Duct testing,
Refrigerant Charge Measurement,
Cooling coil airflow & Fan Watt Draw




               55      ©2010 Energy Code Works, Inc.




   HVAC

 Prescriptive requirement
 No prescriptive alternatives
 HVAC change-outs




               56      ©2010 Energy Code Works, Inc.




                                                             28
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      HVAC

    Prescriptive requirement
    No prescriptive alternatives
    HVAC change-outs



TXV verification or higher EER
alternatives no longer options to
avoid duct sealing & testing

Performance approach is an
option to tradeoff against duct
sealing & testing




                  57      ©2010 Energy Code Works, Inc.




      HVAC

    Prescriptive requirement
    No prescriptive alternatives
    HVAC change-outs



HVAC change-outs

Ducts must be sealed and tested
under any of the following
circumstances:




                  58      ©2010 Energy Code Works, Inc.




                                                                29
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                        HVAC

                      Prescriptive requirement
                      No prescriptive alternatives
                      HVAC change-outs



    HVAC change-outs

    1.   Air handler installed or replaced
    2.   Outdoor condensing unit installed or replaced
    3.   Cooling or heating coil installed or replaced
    4.   Furnace heat exchanger installed or replaced
    5.   When existing duct systems are altered in
         climate zones 2, 9, 10, 11, 12-16




                                    59      ©2010 Energy Code Works, Inc.




                        HVAC

                      Refrigerant Charge Measurement
                      Cooling Coil Airflow
                      Fan Watt Draw



Prescriptive Package Requirements

Refrigerant charge Measurement
   Climate zones 2 and 8-15 (split systems only)

Cooling Coil Airflow (greater than 350 cfm per ton)
   Climate zones 10-15

Fan Watt Draw (less than 0.58 watt per cfm)
   Climate zones 10-15


                                    60      ©2010 Energy Code Works, Inc.




                                                                                  30
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 HVAC

Refrigerant Charge Measurement
Cooling Coil Airflow
Fan Watt Draw




             61    ©2010 Energy Code Works, Inc.




 HVAC

Refrigerant Charge Measurement
Cooling Coil Airflow
Fan Watt Draw




             62    ©2010 Energy Code Works, Inc.




                                                         31
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                                HVAC

                               Refrigerant Charge Measurement
                               Cooling Coil Airflow
                               Fan Watt Draw



   Two permanently installed
   temperature sensors, one
   mounted on evap coil and one
   mounted on condenser coil.

   Must be type K with plug leading
   to outside of equipment accessible
   to HERS raters without any
   disassembly



                                            63    ©2010 Energy Code Works, Inc.




                                HVAC

                               Refrigerant Charge Measurement
                               Cooling Coil Airflow
                               Fan Watt Draw


Two permanently installed
temperature sensors, one
mounted on evap coil and one
mounted on condenser coil.

Must be type K with plug leading
to outside of equipment accessible
to HERS raters without any
disassembly




                                            64    ©2010 Energy Code Works, Inc.




                                                                                        32
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                                   HVAC

                                Refrigerant Charge Measurement
                                Cooling Coil Airflow
                                Fan Watt Draw



Bottom line
These HERS measures are baseline in Package D so they will be widespread

Because they are required in Package D they are not available as a credit to help
you go beyond Title-24

HVAC contractors will need to become familiar with testing procedure for all three
HERS measures.

CF-6R HVAC forms will need to be filled out prior to HERS verification tests

Will need system in place for providing sensors, temperature and pressure access
holes w/labels for HERS raters



                                                     65        ©2010 Energy Code Works, Inc.




                   Scope of this Class



                  1        Changes to Envelope Requirements


                  2        Changes to HVAC Requirements


                  3        New Residential Lighting Requirements


                  4        Impact of Time Dependant Valuation (TDV)




                                                     66        ©2010 Energy Code Works, Inc.




                                                                                                     33
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                                          TDV

                      4        Impact of Time Dependant Valuation (TDV)

   New for 2008 Residential Standards
   Previous versions of Title-24 did not account for time-of-use patterns
   TDV accounts for variations in cost related to time of day, seasons, geography, fuel type
   2008 Standards now places a higher value on energy savings during high cost times
   Encourages designs that will reduce peak loads thru-out California.




                                                         67        ©2010 Energy Code Works, Inc.




                                          TDV

                      4        Impact of Time Dependant Valuation (TDV)


Example:
Single family residence
1800 sq. ft.
Package D parameters




                                                         68        ©2010 Energy Code Works, Inc.




                                                                                                         34
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                            TDV

                 4   Impact of Time Dependant Valuation (TDV)


Example:
SFR residence
1800 sq. ft.
Package D




                                      69     ©2010 Energy Code Works, Inc.




                            TDV

                 4   Impact of Time Dependant Valuation (TDV)


Example:
SFR residence
1800 sq. ft.
Package D

1ST Perf Run
Front facing N




                                      70     ©2010 Energy Code Works, Inc.




                                                                                   35
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                                  TDV

                  4      Impact of Time Dependant Valuation (TDV)


Example:
SFR residence
1800 sq. ft.
Package D

2nd Perf Run
Multiple
Orientations




                                                 71   ©2010 Energy Code Works, Inc.




                                  TDV

                  4      Impact of Time Dependant Valuation (TDV)



   Strategies for TDV

   Orientation is important is building design

   Take advantage of all overhangs and side fins in building design

   Model each window and door separately in compliance run

   Utilize exterior shading devices

   No credit for interior shading devices


   break




                                                 72   ©2010 Energy Code Works, Inc.




                                                                                            36
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                              TDV

               4      Impact of Time Dependant Valuation (TDV)



Bottom Line for TDV 2008

Building designs that generate high heating/cooling loads during peak
energy cost periods will be severely penalized

Electric multipliers for 2008 up to 50 verses 20 in 2005 standards

Gas multipliers for 2008 up to 1.5 vs. 1.0 in 2005 standards

Upside: Energy saving features, strategies that reduce peak loads
        are rewarded greatly, can help you go “better than” Title-24


break




                                          73      ©2010 Energy Code Works, Inc.




        Title-24 Building Energy Standards


                                           Energy Code Works, Inc.



                            Break


                                                                                        37
5/20/2010




 Scope of this Class



 5       Beyond Title-24: Envelope


 6       Beyond Title-24: HVAC


 7       Beyond Title-24: HERS Measures


 8       SDG&E’s Incentive Programs




                        75       ©2010 Energy Code Works, Inc.




 Compliance Paths

Two compliance paths available




 Prescriptive     Performance




                        76       ©2010 Energy Code Works, Inc.




                                                                       38
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     Building Envelope

            New 2008 Prescriptive
            Requirements




                          77        ©2010 Energy Code Works, Inc.




     Building Envelope

            2008 Upgrade Options




Opaque Options for credit:
Superbatt insulation
Overhangs/Sidefins
House wrap




                          78        ©2010 Energy Code Works, Inc.




                                                                          39
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                 Building Envelope

                        2008 Upgrade Options




           Superbatt insulation
           R-15: 3 ½” thickness 2x4 framing
           R-21: 5 ½” thickness 2x6 framing




                                      79       ©2010 Energy Code Works, Inc.




                 Building Envelope

                        2008 Upgrade Options



Overhangs
Ignored in prescriptive approach
Large credit using performance
Requires modeling each window/glazed door separately




                                      80       ©2010 Energy Code Works, Inc.




                                                                                     40
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                          Building Envelope

                                   2008 Upgrade Options




                                                81        ©2010 Energy Code Works, Inc.




                          Building Envelope

                                   2008 Upgrade Options




House Wrap:
Reduces building envelope air leakage

Must be applied continuously
All tears/breaks repaired
Horizontal seams lapped
Vertical seams lapped
Windows/penetrations taped or caulked
Taped or sealed at slab junction




                                                82        ©2010 Energy Code Works, Inc.




                                                                                                41
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Building Envelope

       2008 Upgrade Options




                    83    ©2010 Energy Code Works, Inc.




Building Envelope

       2008 Upgrade Options



Default tables 116-a & 116-b




                    84    ©2010 Energy Code Works, Inc.




                                                                42
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Building Envelope

    2008 Upgrade Options



    Package D vs. NFRC labels




                 85    ©2010 Energy Code Works, Inc.




Building Envelope

    2008 Upgrade Options




                 86    ©2010 Energy Code Works, Inc.




                                                             43
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            Building Envelope

                       2008 Upgrade Options




            Glazing Strategies for Beyond Title-24:

            Do not use default tables if possible

            Relatively easy to hit 0.40 UF/SHGC target

            Energy Star target of 0.30 UF/SHGC is
            driving window manufactures product more
            than California’s Title-24’s 0.40/0.40




                                          87        ©2010 Energy Code Works, Inc.




            Building Envelope

                5    Beyond Title-24: Envelope Results




Package D
Results:
            6




                                          88        ©2010 Energy Code Works, Inc.




                                                                                          44
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                           Building Envelope

                              5    Beyond Title-24: Envelope Results



          Envelope Improvements
          Results:
                          6
          Superbatt: R-15 wall insulation R-38 ceiling insulation

          House wrap

          Modeled overhangs and sidefins

          Milgard Low-E windows: 0.30 U-factor 0.30 SHGC (Energystar)




                                                       89       ©2010 Energy Code Works, Inc.




                           Building Envelope

                              5     Beyond Title-24: Envelope Results


Envelope
Improvements
Results:

Superbatt                 6
Housewrap
Overhangs
Milgard Low-E
Windows




                                                       90       ©2010 Energy Code Works, Inc.




                                                                                                      45
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      Scope of this Class



     5    Beyond Title-24: Envelope


     6    Beyond Title-24: HVAC


     7    Beyond Title-24: HERS Measures


     8    SDG&E’s Incentive Programs




                          91      ©2010 Energy Code Works, Inc.




HVAC Upgrades Beyond Title-24


         Minimum AFUE, SEER, EER

         SEER vs EER


          Prescriptive requirement
          No prescriptive alternatives
          HVAC change-outs


          Refrigerant Charge Measurement
          Cooling Coil Airflow
          Fat Watt Draw




                          92      ©2010 Energy Code Works, Inc.




                                                                        46
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HVAC Beyond Title-24
      Prescriptive Packages refer to
      Appliance Efficiency Regulations
      minimums




                   93     ©2010 Energy Code Works, Inc.




HVAC Beyond Title-24
      Appliance Efficiency Regulations
      set HVAC efficiency minimums in
      Prescriptive Packages




                   94     ©2010 Energy Code Works, Inc.




                                                                47
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                          HVAC Beyond Title-24

                                     HVAC Strategies




                            HVAC Strategies for Beyond Title-24:

                            Higher AFUE (90%+)

                            Higher SEER and higher EER

                            HVAC zoning

                            Ducts within conditioned space




                                                      95     ©2010 Energy Code Works, Inc.




                          HVAC Beyond Title-24

                                     HVAC Strategies



HVAC Zoning

Living & Sleeping Zones




                                                      96     ©2010 Energy Code Works, Inc.




                                                                                                   48
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                             HVAC

                            HVAC Strategies




Duct Location

Within Conditioned Space

Buried ducts

Both require extensive
documentation




                                         97      ©2010 Energy Code Works, Inc.




                  HVAC Beyond Title-24

                           Prescriptive requirement
                           No prescriptive alternatives
                           No credit potential




                                         98      ©2010 Energy Code Works, Inc.




                                                                                       49
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         HVAC Beyond Title-24

                       Refrigerant Charge Measurement
                       Cooling Coil Airflow
                       Fan Watt Draw



Prescriptive Package D Requirements

Refrigerant charge Measurement
   Climate zones 2 and 8-15 (split systems only)

Cooling Coil Airflow (greater than 350 cfm per ton)
   Climate zones 10-15

Fan Watt Draw (less than 0.58 watt per cfm)
   Climate zones 10-15


                                      99    ©2010 Energy Code Works, Inc.




         HVAC Beyond Title-24

                6       Beyond Title-24: HVAC


            5
         HVAC Improvements Results:

         90% AFUE

         14 SEER 11.00 EER

         HVAC Zoning




                                      100   ©2010 Energy Code Works, Inc.




                                                                                  50
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                     HVAC Beyond Title-24

                             6        Beyond Title-24: HVAC


                         5
HVAC Improvements
Results:




                                                     101       ©2010 Energy Code Works, Inc.




                          Building Envelope

                             5    Beyond Title-24: Envelope Results



         Envelope Improvements
         Results:
                         6
         Superbatt: R-15 wall insulation R-38 ceiling insulation

         Overhangs, sidefins

         Housewrap

         Milgard Low-E windows: 0.30 U-factor 0.30 SHGC (Energystar)




                                                     102       ©2010 Energy Code Works, Inc.




                                                                                                     51
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HVAC Beyond Title-24

        6       Beyond Title-24: HVAC


    5
HVAC Improvements Results:

90% AFUE

14 SEER 11.00 EER

HVAC Zoning


Total: 25% better than Title-24




                                  103   ©2010 Energy Code Works, Inc.




    Scope of this Class



    5         Beyond Title-24: Envelope


    6         Beyond Title-24: HVAC


    7         Beyond Title-24: HERS Measures


    8         SDG&E’s Incentive Programs




                                  104   ©2010 Energy Code Works, Inc.




                                                                              52
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               HERS Measures



Duct Sealing    •Sealed and HERS verified less than 6% supply fan flow
                •Change-outs: 15% or less of fan flow Package D, no credit

  Supply
   Duct         • Conditioned space, buried ducts Credit, lots of documentation
 Location

Supply Duct
                • Reduced surface area   Credit, lots of documentation
  Credits

                • NEW CEC certified AHU w/less than 2% leakage.
Low Leakage       Duct sealing & testing also required.
    AHU

                •CHANGED Refrigerant charge verified using one of three methods
 Refrigerant
                 Invasive, non-invasive & CID. No TXV to trade against Package D,
  Charge
                No credit




                                         105         ©2010 Energy Code Works, Inc.




               HERS Measures




Supply Duct
  Credits


Low Leakage
    AHU

 Refrigerant
  Charge




                                         106         ©2010 Energy Code Works, Inc.




                                                                                           53
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                          HERS Measures




            Supply Duct
              Credits


           Low Leakage
               AHU

            Refrigerant
             Charge




                                            107   ©2010 Energy Code Works, Inc.




                          HERS Measures


Proper Refrigerant Charge Verification:

Will be very common because of change-out
rules

Very cost-effective

           Supply Duct
Overcharged or undercharged system can
             Credits
reduce a 14 SEER unit to below 9 SEER

Must be performed by an independent
           Low Leakage
HERS rater     AHU




                                            108   ©2010 Energy Code Works, Inc.




                                                                                        54
5/20/2010




               HERS Measures



    CID         • NEW Charge Indicator Device Credit, not yet available



                • NEW Requires air handling units maintain supply airflow greater
   CCA            than 350 cfm per nominal ton of cooling capacity across the coil
                  Package D, no credit

  Fan Watt
                • NEW Requires fan watt draw less than 0.58 watts per cfm
   Draw
                •Package D, no credit

                • HVAC condenser & coil correctly matched to achieve
 High EER         high EER (above 10) Credit


                •Credit for A/C equipment having cooling capacity that meets
  Cooling
                 calculated maximum cooling load. Credit, load calcs req.
  Capacity




                                            109           ©2010 Energy Code Works, Inc.




               HERS Measures


Evap Cooled     • NEW Improves EER, water use limits & duct sealing, air flow, and
Condensers        refrigerant charge verification required. Credit

   Ice
 Storage        • NEW Shifts peak energy use to off-peak hours (Ice Bear)
   A/C            Additional HERS measures required Credit

  Envelope
                • Sealing, caulking, gaskets. Verified by HERS blower door test.
   Sealing
                •Credit

                • Framing stage field verification then insulation stage verification.
    QII         • New QII verification for Spray Polyurethane Foam
                •Credit

                • Not a Title-24 credit, New Solar Home Program requirement
Photovoltaic
                • HERS PV verifications required.




                                            110           ©2010 Energy Code Works, Inc.




                                                                                                55
5/20/2010




                 HERS Measures
                    HERS Measures most
                    commonly specified for 2008:

Duct Sealing


 Refrigerant
  Charge


Cooling Coil
  Airflow


 Fan Watt
  Draw

Photovoltaic
    QII




                                          111      ©2010 Energy Code Works, Inc.




               Scope of this Class

                7       Beyond Title-24: HERS Measures




               HERS credits assumed in run:

               Duct sealing & testing (Package D)
               Verified fan flow (package D)
               Refrigerant charge verification (Package D)
               EER verification (credit)
               HVAC zoning: (credit)
               QII (credit)




                                         112       ©2010 Energy Code Works, Inc.




                                                                                         56
5/20/2010




               Scope of this Class

                7       Beyond Title-24: HERS Measures




HERS credits
results:




                                        113       ©2010 Energy Code Works, Inc.




               Scope of this Class

                7       Beyond Title-24: HERS Measures




               HERS credits left remaining:

               Blower door test
               Ice storage system
               Ducts in conditioned space
               Measured duct surface area
               Water cooled condenser

               These credits can be used for plans with
               more glass area than baseline (20% CFA)

               Also:
               Radiant heating
               Tankless water heater



                                        114       ©2010 Energy Code Works, Inc.




                                                                                        57
5/20/2010




                            Building Envelope

                              5    Beyond Title-24: Envelope Results


Envelope
Improvements
Results:

Superbatt                 6
Radiant Barrier
Housewrap
Milgard Low-E
Windows

Adding a tankless
water heater would
have easily pushed
results to
15% better than
for LEED


                                                 115     ©2010 Energy Code Works, Inc.




                            Building Envelope

                              5   Beyond Title-24: Extreme Compliance



     Shipping Container House
     Metal sides
     Metal framing
                           6
     Over 50% glass/floor ratio
     Joshua Tree!




                                                 116     ©2010 Energy Code Works, Inc.




                                                                                               58
5/20/2010




                          Building Envelope

                          5   Beyond Title-24: Extreme Compliance



 Shipping Container House

 Title-24 strategies:
 Isolated metal framing




                                             117     ©2010 Energy Code Works, Inc.




                          Building Envelope

                          5   Beyond Title-24: Extreme Compliance


Shipping Container House

Title-24 strategies:
Exterior shading




                                             118     ©2010 Energy Code Works, Inc.




                                                                                           59
5/20/2010




                     Building Envelope

                         5     Beyond Title-24: Extreme Compliance

Shipping Container House

Title-24 strategies:
HVAC zoning
Ductless split units
Tankless water heaters
High performance
windows/doors




                                                    119         ©2010 Energy Code Works, Inc.




                          Beyond Title-24

                          7       Beyond Title-24: HERS Measures




                         Resistance to HERS measures:

                         HVAC contractors (duct testing):
                         Extra expense
                         “our ducts don’t leak”


                         Insulation contractors:
                         Extra expense
                         Unnecessary, “our installations pass
                         inspection”




                                                   120          ©2010 Energy Code Works, Inc.




                                                                                                      60
5/20/2010




                                  Beyond Title-24

                                  7       Beyond Title-24: HERS Measures


                    Resistance to HERS measures:

                    HVAC contractors (duct testing):
                    “Our ducts don’t leak”
                     Extra expense


                    Most new ducts leak over 25%
                    Common problems:
                    Poor duct design
                    Connections not to code
                    Leaky fan coil units
                    Ducts not properly supported




                                                       121    ©2010 Energy Code Works, Inc.




                                  Beyond Title-24

                                  7       Beyond Title-24: HERS Measures


Resistance to HERS measures:

Duct testing

Air Conditioning Contractors of America
Quality Installation Specification

HVAC industry guide that “establishes
minimum criteria for the proper installation,
maintenance and servicing of HVAC
systems”




                                                       122    ©2010 Energy Code Works, Inc.




                                                                                                    61
5/20/2010




                               Beyond Title-24
                               7       Beyond Title-24: HERS Measures



Resistance to HERS measures:

Duct testing


 Air Conditioning Contractors of America
 Quality Installation Specification

 Uses identical criteria for allowable duct
 leakage as Title-24’s HERS duct sealing &
 testing procedures.




                                                   123     ©2010 Energy Code Works, Inc.




                               Beyond Title-24
                               7       Beyond Title-24: HERS Measures




                                                   124     ©2010 Energy Code Works, Inc.




                                                                                                 62
5/20/2010




                           Beyond Title-24

                           7          Beyond Title-24: HERS Measures


Resistance to HERS measures:
Insulation contractors:
Extra expense
Unnecessary, “our installations
pass inspection”


Why is it more expensive to do it
right?

What guidelines are insulation
contractors using normally?




                                                   125    ©2010 Energy Code Works, Inc.




                           Beyond Title-24
                            7         Beyond Title-24: HERS Measures



North American Insulation
Manufacturers of America

Guidelines for installation of
insulation and hiring of insulation
contractors




                                                   126    ©2010 Energy Code Works, Inc.




                                                                                                63
5/20/2010




                                      Beyond Title-24
                                      7     Beyond Title-24: HERS Measures


North American Insulation
Manufacturers of America

Guidelines virtually identical with
HERS QII compliance checklist


If contractors follows this checklist
they likely will pass HERS QII
verification inspection




                                                                   127        ©2010 Energy Code Works, Inc.




                                      Beyond Title-24
                                      7     Beyond Title-24: HERS Measures


                         QII in Title-24 compliance run
                         R-13 wall insulation is derated to R-8 without QII

                         When QII assumed R-13 is improved to R-9.5

                         Baseline Title-24 assumes poor quality insulation

                         QII is credit for good quality installation




                                                                   128        ©2010 Energy Code Works, Inc.




                                                                                                                    64
5/20/2010




        Beyond Title-24
        7    Beyond Title-24: HERS Measures

QII in real world: The good




                             129   ©2010 Energy Code Works, Inc.




        Beyond Title-24
        7    Beyond Title-24: HERS Measures

QII in real world: the bad




                             130   ©2010 Energy Code Works, Inc.




                                                                         65
5/20/2010




        Beyond Title-24
        7    Beyond Title-24: HERS Measures

QII in real world: the ugly




                              131   ©2010 Energy Code Works, Inc.




        Beyond Title-24
        7    Beyond Title-24: HERS Measures

QII in real world




                              132   ©2010 Energy Code Works, Inc.




                                                                          66
5/20/2010




          Beyond Title-24
           7      Beyond Title-24: HERS Measures


Bottom line
HERS measures represent one of the most cost-
effective energy savings strategies in the energy
code.

Energy savings & quality control

HVAC contractors and Insulation contractors will
Need to become familiar with HERS criteria for
compliance.

HERS requirements are virtually identical to their
own industry installation guidelines




                                       133           ©2010 Energy Code Works, Inc.




          Beyond Title-24
           7      Beyond Title-24: HERS Measures


QII Training for Contractors
City of Santa Monica

www.smgov.net/departments/ose/categories/buildGreen.aspx




                                       134           ©2010 Energy Code Works, Inc.




                                                                                           67
5/20/2010




                     Compliance Forms
                                    Certificate of Compliance (CF-1R)
                                                                Submitted to plancheck and
                        Prepared by Title-24 consultant or
                                                             approved copy provided to General
                                designer
                                                                        Contractor
Installation

CF-6R Installation
Certificate
CF-4R Field
Verification/HERS




                                                 135         ©2010 Energy Code Works, Inc.




                     Compliance Forms
                                    Certificate of Compliance (CF-1R)
                                                                Submitted to plancheck and
                        Prepared by Title-24 consultant or
                                                             approved copy provided to General
                                designer
                                                                        Contractor
Installation

CF-6R Installation
Certificate
CF-4R Field                         Certificate of Installation (CF-6R)
Verification/HERS
                        Filled out by contractor and sub-    Provided to inspector & HERS Rater
                                    contractors                   & later to the homeowner




                                                 136         ©2010 Energy Code Works, Inc.




                                                                                                        68
5/20/2010




                      Compliance Forms
                                         Certificate of Compliance (CF-1R)
                                                                  Submitted to plancheck and
                           Prepared by Title-24 consultant or
                                                                  approved copy provided to General
                           designer
                                                                  Contractor
Installation

CF-6R Installation
Certificate
CF-4R Field                              Certificate of Installation (CF-6R)
Verification/HERS
                           Filled out by contractor and sub-      Provided to inspector & HERS Rater
                           contractors                            & later to the homeowner




                             Certificate of Verification and Diagnostic (CF-4R)

                           Completed by HERS Rater                Registered with CHEERS or Calcerts
                                                                  and copy provided to contractor


                                                       137        ©2010 Energy Code Works, Inc.




                                                               Energy Code Works, Inc.


                     Mark Madison
                     CEPE, CEA, AEE, HERS Rater,
                     GreenPoint Rater, ResNet Rater, Member CABEC, CHEERS




                                                                                                             69

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Advanced Residential T24 - Compliance Class

  • 1. 5/20/2010 Title-24 Building Energy Standards Energy Code Works, Inc. Mark Madison CEPE, CEA, AEE, HERS Rater, GreenPoint Rater, ResNet Rater, Member CABEC, CHEERS Housekeeping AIA CES credits: 1 3 HSW (Health Safety & Welfare) 3 SD (Sustainable Design) 2 ©2010 Energy Code Works, Inc. 1
  • 2. 5/20/2010 Beyond Title-24 Advanced Title-24 scope:  Why go beyond Title-24?  How do you get beyond Title-24? 3 ©2010 Energy Code Works, Inc. Beyond Title-24 Why Beyond Title-24?  Incentives and requirements (carrots & sticks)  Carrots:  Utility incentive programs  PV incentives (NSHP)  Energy-Star  LEED  Sticks  Cities requiring better than Title-24 compliance  Energy efficient mortgages  Self-motivated designers/builders  Title-24 energy code = just barely legal 4 ©2010 Energy Code Works, Inc. 2
  • 3. 5/20/2010 Beyond Title-24 Why Beyond Title-24?  Incentives and requirements (carrots & sticks)  Carrots:  Utility incentive programs  PV incentives (NSHP)  Energy-Star  LEED 5 ©2010 Energy Code Works, Inc. Beyond Title-24 Why Beyond Title-24?  Incentives and requirements (carrots & sticks)  Carrots:  Utility incentive programs  PV incentives (NSHP)  Energy-Star  LEED 6 ©2010 Energy Code Works, Inc. 3
  • 4. 5/20/2010 Beyond Title-24 Why Beyond Title-24?  Incentives and requirements (carrots & sticks)  Carrots:  Utility incentive programs  PV incentives (NSHP)  Energy-Star  LEED 7 ©2010 Energy Code Works, Inc. Beyond Title-24 Why Beyond Title-24? 8 ©2010 Energy Code Works, Inc. 4
  • 5. 5/20/2010 Beyond Title-24 Why Beyond Title-24?  Incentives and requirements (carrots & sticks)  Carrots:  Utility incentive programs  PV incentives (NSHP)  Energy-Star  LEED 9 ©2010 Energy Code Works, Inc. Beyond Title-24 Why Beyond Title-24?  Incentives and requirements (carrots & sticks)  Sticks  Cities requiring better than Title-24 compliance  Energy efficient mortgages 10 ©2010 Energy Code Works, Inc. 5
  • 6. 5/20/2010 Beyond Title-24 Why Beyond Title-24?  Incentives and requirements (carrots & sticks)  Sticks  Cities requiring better than Title-24 compliance  Energy efficient mortgages 11 ©2010 Energy Code Works, Inc. Beyond Title-24  How do you get beyond Title-24?  Challenges:  New 2008 Title-24 Building Energy Standards 15-22% more restrictive, tougher than current 2005 energy code.  Many energy credits in 2005 standards are now baseline for 2008 energy code  New 2008 energy code introduces additional layers of compliance criteria, forms, paperwork 12 ©2010 Energy Code Works, Inc. 6
  • 7. 5/20/2010 Beyond Title-24  How do you get beyond Title-24?  Opportunities:  35% better than 2005 Title-24 has been achievable.  2008 Title-24 energy code contains new credits  Building industry has reacted to carrots and sticks  Insulation products  Radiant Barriers  Cool Roofs  HVAC efficiencies  Window/doors products  NFRC testing  Tank less water heaters 13 ©2010 Energy Code Works, Inc. Scope of this Class 1 Changes to Envelope Requirements 2 Changes to HVAC Requirements 3 New Residential Lighting Requirements 4 Impact of Time Dependant Valuation (TDV) 14 ©2010 Energy Code Works, Inc. 7
  • 8. 5/20/2010 Scope of this Class 5 Beyond Title-24: Envelope 6 Beyond Title-24: HVAC 7 Beyond Title-24: HERS Measures 8 SDG&E’s Incentive Programs 15 ©2010 Energy Code Works, Inc. 2008 Building Energy Standards Effective date: January 1, 2010  Projects permitted prior to January 1, 2010 will continue to use 2005 energy code 16 ©2010 Energy Code Works, Inc. 8
  • 9. 5/20/2010 2008 Building Energy Standards Effective date: January 1, 2010 17 ©2010 Energy Code Works, Inc. 2008 Building Energy Standards  Future of Title-24 18 ©2010 Energy Code Works, Inc. 9
  • 10. 5/20/2010 2008 Building Energy Standards  Future of Title-24 19 ©2010 Energy Code Works, Inc. 2008 Building Energy Standards  Future of Title-24 20 ©2010 Energy Code Works, Inc. 10
  • 11. 5/20/2010 2008 Building Energy Standards  Future of Title-24 21 ©2010 Energy Code Works, Inc. Scope of this Class 1 Changes to Envelope Requirements 2 Changes to HVAC Requirements 3 New Residential Lighting Requirements 4 Impact of Time Dependant Valuation (TDV) 22 ©2010 Energy Code Works, Inc. 11
  • 12. 5/20/2010 Compliance Paths Two compliance paths available Prescriptive Performance 23 ©2010 Energy Code Works, Inc. Compliance Paths Two compliance paths available Mandatory Measures Prescriptive Performance Prescriptive Performance Path Path 24 ©2010 Energy Code Works, Inc. 12
  • 13. 5/20/2010 Compliance Paths Advantages/Disadvantages Mandatory Measures Prescriptive Performance Prescriptive Performance Path Path 25 ©2010 Energy Code Works, Inc. Building Envelope Walls, floors, ceiling assemblies Windows, glass doors, skylights When required, testing and certification, & labeling requirements, where required. 26 ©2010 Energy Code Works, Inc. 13
  • 14. 5/20/2010 Building Envelope Current 2005 Prescriptive Requirements 27 ©2010 Energy Code Works, Inc. Building Envelope New 2008 Prescriptive Requirements 28 ©2010 Energy Code Works, Inc. 14
  • 15. 5/20/2010 Building Envelope New 2008 Prescriptive Requirements Bottom Line: Prescriptive insulation levels remain essentially unchanged from 2005 standards Big change…..Fenestration requirements 29 ©2010 Energy Code Works, Inc. Building Envelope Current 2005 Prescriptive Requirements 30 ©2010 Energy Code Works, Inc. 15
  • 16. 5/20/2010 Building Envelope New 2008 Prescriptive Requirements 31 ©2010 Energy Code Works, Inc. Building Envelope Windows, glass doors, skylights Two allowable methods for determining window & door performance: NFRC procedures/labels or… Use default tables (116-a & 116-b) 32 ©2010 Energy Code Works, Inc. 16
  • 17. 5/20/2010 Building Envelope Windows, glass doors, skylights 33 ©2010 Energy Code Works, Inc. Building Envelope 34 ©2010 Energy Code Works, Inc. 17
  • 18. 5/20/2010 Building Envelope 35 ©2010 Energy Code Works, Inc. Building Envelope Windows, glass doors, skylights 36 ©2010 Energy Code Works, Inc. 18
  • 19. 5/20/2010 Building Envelope Windows, glass doors, skylights Default tables 116-a & 116-b 37 ©2010 Energy Code Works, Inc. Building Envelope Windows, glass doors, skylights 2008 Package D 38 ©2010 Energy Code Works, Inc. 19
  • 20. 5/20/2010 Building Envelope Windows, glass doors, skylights Package D vs. Default tables (U-factor) 39 ©2010 Energy Code Works, Inc. Building Envelope Windows, glass doors, skylights Package D vs. Default tables (SHGC) 40 ©2010 Energy Code Works, Inc. 20
  • 21. 5/20/2010 Building Envelope Windows, glass doors, skylights Package D vs. NFRC labels 41 ©2010 Energy Code Works, Inc. Building Envelope Windows, glass doors, skylights Bottom Line: Prescriptive U-factor requirements almost 30% more stringent than 2005 code 2008 Standards will force you to use NFRC Labels Significant penalty for using default tables 42 ©2010 Energy Code Works, Inc. 21
  • 22. 5/20/2010 Building Envelope When required, where required, testing, certification & labeling In 2008 code required prescriptively in all climate zones New, addition & alterations 43 ©2010 Energy Code Works, Inc. Building Envelope When required, where required, testing, certification & labeling Energy Star Cool Roof does not qualify in California Must be certified & labeled by the Cool Roof Rating Council 44 ©2010 Energy Code Works, Inc. 22
  • 23. 5/20/2010 Building Envelope When required, where required, testing, certification & labeling Exemptions to cool roof requirement: Roof areas covered by building integrated photovoltaic panels and solar hot water panels and roofs with existing roof ballasts w/weight of 25 lb/ft2 are exempted from cool roof requirement. 45 ©2010 Energy Code Works, Inc. Scope of this Class 1 Changes to Envelope Requirements 2 Changes to HVAC Requirements 3 New Residential Lighting Requirements 4 Impact of Time Dependant Valuation (TDV) 46 ©2010 Energy Code Works, Inc. 23
  • 24. 5/20/2010 HVAC Minimum AFUE, SEER, EER SEER vs EER Prescriptive requirement No prescriptive alternatives HVAC change-outs Refrigerant Charge Measurement Cooling Coil Airflow Fat Watt Draw 47 ©2010 Energy Code Works, Inc. HVAC Appliance Efficiency Regulations set HVAC efficiency minimums in Prescriptive Packages 48 ©2010 Energy Code Works, Inc. 24
  • 25. 5/20/2010 HVAC Prescriptive Packages refer to Appliance Efficiency Regulations minimums 49 ©2010 Energy Code Works, Inc. HVAC Minimum AFUE, SEER, EER SEER vs EER 50 ©2010 Energy Code Works, Inc. 25
  • 26. 5/20/2010 HVAC Minimum AFUE, SEER, EER SEER vs EER Questions: What is the difference between EER and SEER? Why does it matter? 51 ©2010 Energy Code Works, Inc. HVAC Minimum AFUE, SEER, EER SEER vs EER EER is measured at 80 degrees indoor air running continuously SEER is measured by using the EER and factoring in the same unit running under a lighter load (80 degrees indoor, 82 degrees outdoor and cycling on and off 52 ©2010 Energy Code Works, Inc. 26
  • 27. 5/20/2010 HVAC Minimum AFUE, SEER, EER SEER vs EER Why this matters: Possible for two units with the same SEER to have different EERs For two units with a given SEER the one with the higher EER will be more efficient EER’s higher than 10 require HERS verification Take time to verify SEER and EER 53 ©2010 Energy Code Works, Inc. HVAC Minimum AFUE, SEER, EER SEER vs EER Why this matters: EER higher than 10 will trigger a HERS credit in the Title-24 compliance calculations Will also appear on the CF-1R as a HERS measure required verification and a CF-4R 54 ©2010 Energy Code Works, Inc. 27
  • 28. 5/20/2010 HVAC Minimum AFUE, SEER, EER SEER vs EER Bottom Line: Minimum efficiency levels remain essentially unchanged from 2005 standards. EER more important Big change…..Duct testing, Refrigerant Charge Measurement, Cooling coil airflow & Fan Watt Draw 55 ©2010 Energy Code Works, Inc. HVAC Prescriptive requirement No prescriptive alternatives HVAC change-outs 56 ©2010 Energy Code Works, Inc. 28
  • 29. 5/20/2010 HVAC Prescriptive requirement No prescriptive alternatives HVAC change-outs TXV verification or higher EER alternatives no longer options to avoid duct sealing & testing Performance approach is an option to tradeoff against duct sealing & testing 57 ©2010 Energy Code Works, Inc. HVAC Prescriptive requirement No prescriptive alternatives HVAC change-outs HVAC change-outs Ducts must be sealed and tested under any of the following circumstances: 58 ©2010 Energy Code Works, Inc. 29
  • 30. 5/20/2010 HVAC Prescriptive requirement No prescriptive alternatives HVAC change-outs HVAC change-outs 1. Air handler installed or replaced 2. Outdoor condensing unit installed or replaced 3. Cooling or heating coil installed or replaced 4. Furnace heat exchanger installed or replaced 5. When existing duct systems are altered in climate zones 2, 9, 10, 11, 12-16 59 ©2010 Energy Code Works, Inc. HVAC Refrigerant Charge Measurement Cooling Coil Airflow Fan Watt Draw Prescriptive Package Requirements Refrigerant charge Measurement Climate zones 2 and 8-15 (split systems only) Cooling Coil Airflow (greater than 350 cfm per ton) Climate zones 10-15 Fan Watt Draw (less than 0.58 watt per cfm) Climate zones 10-15 60 ©2010 Energy Code Works, Inc. 30
  • 31. 5/20/2010 HVAC Refrigerant Charge Measurement Cooling Coil Airflow Fan Watt Draw 61 ©2010 Energy Code Works, Inc. HVAC Refrigerant Charge Measurement Cooling Coil Airflow Fan Watt Draw 62 ©2010 Energy Code Works, Inc. 31
  • 32. 5/20/2010 HVAC Refrigerant Charge Measurement Cooling Coil Airflow Fan Watt Draw Two permanently installed temperature sensors, one mounted on evap coil and one mounted on condenser coil. Must be type K with plug leading to outside of equipment accessible to HERS raters without any disassembly 63 ©2010 Energy Code Works, Inc. HVAC Refrigerant Charge Measurement Cooling Coil Airflow Fan Watt Draw Two permanently installed temperature sensors, one mounted on evap coil and one mounted on condenser coil. Must be type K with plug leading to outside of equipment accessible to HERS raters without any disassembly 64 ©2010 Energy Code Works, Inc. 32
  • 33. 5/20/2010 HVAC Refrigerant Charge Measurement Cooling Coil Airflow Fan Watt Draw Bottom line These HERS measures are baseline in Package D so they will be widespread Because they are required in Package D they are not available as a credit to help you go beyond Title-24 HVAC contractors will need to become familiar with testing procedure for all three HERS measures. CF-6R HVAC forms will need to be filled out prior to HERS verification tests Will need system in place for providing sensors, temperature and pressure access holes w/labels for HERS raters 65 ©2010 Energy Code Works, Inc. Scope of this Class 1 Changes to Envelope Requirements 2 Changes to HVAC Requirements 3 New Residential Lighting Requirements 4 Impact of Time Dependant Valuation (TDV) 66 ©2010 Energy Code Works, Inc. 33
  • 34. 5/20/2010 TDV 4 Impact of Time Dependant Valuation (TDV) New for 2008 Residential Standards Previous versions of Title-24 did not account for time-of-use patterns TDV accounts for variations in cost related to time of day, seasons, geography, fuel type 2008 Standards now places a higher value on energy savings during high cost times Encourages designs that will reduce peak loads thru-out California. 67 ©2010 Energy Code Works, Inc. TDV 4 Impact of Time Dependant Valuation (TDV) Example: Single family residence 1800 sq. ft. Package D parameters 68 ©2010 Energy Code Works, Inc. 34
  • 35. 5/20/2010 TDV 4 Impact of Time Dependant Valuation (TDV) Example: SFR residence 1800 sq. ft. Package D 69 ©2010 Energy Code Works, Inc. TDV 4 Impact of Time Dependant Valuation (TDV) Example: SFR residence 1800 sq. ft. Package D 1ST Perf Run Front facing N 70 ©2010 Energy Code Works, Inc. 35
  • 36. 5/20/2010 TDV 4 Impact of Time Dependant Valuation (TDV) Example: SFR residence 1800 sq. ft. Package D 2nd Perf Run Multiple Orientations 71 ©2010 Energy Code Works, Inc. TDV 4 Impact of Time Dependant Valuation (TDV) Strategies for TDV Orientation is important is building design Take advantage of all overhangs and side fins in building design Model each window and door separately in compliance run Utilize exterior shading devices No credit for interior shading devices break 72 ©2010 Energy Code Works, Inc. 36
  • 37. 5/20/2010 TDV 4 Impact of Time Dependant Valuation (TDV) Bottom Line for TDV 2008 Building designs that generate high heating/cooling loads during peak energy cost periods will be severely penalized Electric multipliers for 2008 up to 50 verses 20 in 2005 standards Gas multipliers for 2008 up to 1.5 vs. 1.0 in 2005 standards Upside: Energy saving features, strategies that reduce peak loads are rewarded greatly, can help you go “better than” Title-24 break 73 ©2010 Energy Code Works, Inc. Title-24 Building Energy Standards Energy Code Works, Inc. Break 37
  • 38. 5/20/2010 Scope of this Class 5 Beyond Title-24: Envelope 6 Beyond Title-24: HVAC 7 Beyond Title-24: HERS Measures 8 SDG&E’s Incentive Programs 75 ©2010 Energy Code Works, Inc. Compliance Paths Two compliance paths available Prescriptive Performance 76 ©2010 Energy Code Works, Inc. 38
  • 39. 5/20/2010 Building Envelope New 2008 Prescriptive Requirements 77 ©2010 Energy Code Works, Inc. Building Envelope 2008 Upgrade Options Opaque Options for credit: Superbatt insulation Overhangs/Sidefins House wrap 78 ©2010 Energy Code Works, Inc. 39
  • 40. 5/20/2010 Building Envelope 2008 Upgrade Options Superbatt insulation R-15: 3 ½” thickness 2x4 framing R-21: 5 ½” thickness 2x6 framing 79 ©2010 Energy Code Works, Inc. Building Envelope 2008 Upgrade Options Overhangs Ignored in prescriptive approach Large credit using performance Requires modeling each window/glazed door separately 80 ©2010 Energy Code Works, Inc. 40
  • 41. 5/20/2010 Building Envelope 2008 Upgrade Options 81 ©2010 Energy Code Works, Inc. Building Envelope 2008 Upgrade Options House Wrap: Reduces building envelope air leakage Must be applied continuously All tears/breaks repaired Horizontal seams lapped Vertical seams lapped Windows/penetrations taped or caulked Taped or sealed at slab junction 82 ©2010 Energy Code Works, Inc. 41
  • 42. 5/20/2010 Building Envelope 2008 Upgrade Options 83 ©2010 Energy Code Works, Inc. Building Envelope 2008 Upgrade Options Default tables 116-a & 116-b 84 ©2010 Energy Code Works, Inc. 42
  • 43. 5/20/2010 Building Envelope 2008 Upgrade Options Package D vs. NFRC labels 85 ©2010 Energy Code Works, Inc. Building Envelope 2008 Upgrade Options 86 ©2010 Energy Code Works, Inc. 43
  • 44. 5/20/2010 Building Envelope 2008 Upgrade Options Glazing Strategies for Beyond Title-24: Do not use default tables if possible Relatively easy to hit 0.40 UF/SHGC target Energy Star target of 0.30 UF/SHGC is driving window manufactures product more than California’s Title-24’s 0.40/0.40 87 ©2010 Energy Code Works, Inc. Building Envelope 5 Beyond Title-24: Envelope Results Package D Results: 6 88 ©2010 Energy Code Works, Inc. 44
  • 45. 5/20/2010 Building Envelope 5 Beyond Title-24: Envelope Results Envelope Improvements Results: 6 Superbatt: R-15 wall insulation R-38 ceiling insulation House wrap Modeled overhangs and sidefins Milgard Low-E windows: 0.30 U-factor 0.30 SHGC (Energystar) 89 ©2010 Energy Code Works, Inc. Building Envelope 5 Beyond Title-24: Envelope Results Envelope Improvements Results: Superbatt 6 Housewrap Overhangs Milgard Low-E Windows 90 ©2010 Energy Code Works, Inc. 45
  • 46. 5/20/2010 Scope of this Class 5 Beyond Title-24: Envelope 6 Beyond Title-24: HVAC 7 Beyond Title-24: HERS Measures 8 SDG&E’s Incentive Programs 91 ©2010 Energy Code Works, Inc. HVAC Upgrades Beyond Title-24 Minimum AFUE, SEER, EER SEER vs EER Prescriptive requirement No prescriptive alternatives HVAC change-outs Refrigerant Charge Measurement Cooling Coil Airflow Fat Watt Draw 92 ©2010 Energy Code Works, Inc. 46
  • 47. 5/20/2010 HVAC Beyond Title-24 Prescriptive Packages refer to Appliance Efficiency Regulations minimums 93 ©2010 Energy Code Works, Inc. HVAC Beyond Title-24 Appliance Efficiency Regulations set HVAC efficiency minimums in Prescriptive Packages 94 ©2010 Energy Code Works, Inc. 47
  • 48. 5/20/2010 HVAC Beyond Title-24 HVAC Strategies HVAC Strategies for Beyond Title-24: Higher AFUE (90%+) Higher SEER and higher EER HVAC zoning Ducts within conditioned space 95 ©2010 Energy Code Works, Inc. HVAC Beyond Title-24 HVAC Strategies HVAC Zoning Living & Sleeping Zones 96 ©2010 Energy Code Works, Inc. 48
  • 49. 5/20/2010 HVAC HVAC Strategies Duct Location Within Conditioned Space Buried ducts Both require extensive documentation 97 ©2010 Energy Code Works, Inc. HVAC Beyond Title-24 Prescriptive requirement No prescriptive alternatives No credit potential 98 ©2010 Energy Code Works, Inc. 49
  • 50. 5/20/2010 HVAC Beyond Title-24 Refrigerant Charge Measurement Cooling Coil Airflow Fan Watt Draw Prescriptive Package D Requirements Refrigerant charge Measurement Climate zones 2 and 8-15 (split systems only) Cooling Coil Airflow (greater than 350 cfm per ton) Climate zones 10-15 Fan Watt Draw (less than 0.58 watt per cfm) Climate zones 10-15 99 ©2010 Energy Code Works, Inc. HVAC Beyond Title-24 6 Beyond Title-24: HVAC 5 HVAC Improvements Results: 90% AFUE 14 SEER 11.00 EER HVAC Zoning 100 ©2010 Energy Code Works, Inc. 50
  • 51. 5/20/2010 HVAC Beyond Title-24 6 Beyond Title-24: HVAC 5 HVAC Improvements Results: 101 ©2010 Energy Code Works, Inc. Building Envelope 5 Beyond Title-24: Envelope Results Envelope Improvements Results: 6 Superbatt: R-15 wall insulation R-38 ceiling insulation Overhangs, sidefins Housewrap Milgard Low-E windows: 0.30 U-factor 0.30 SHGC (Energystar) 102 ©2010 Energy Code Works, Inc. 51
  • 52. 5/20/2010 HVAC Beyond Title-24 6 Beyond Title-24: HVAC 5 HVAC Improvements Results: 90% AFUE 14 SEER 11.00 EER HVAC Zoning Total: 25% better than Title-24 103 ©2010 Energy Code Works, Inc. Scope of this Class 5 Beyond Title-24: Envelope 6 Beyond Title-24: HVAC 7 Beyond Title-24: HERS Measures 8 SDG&E’s Incentive Programs 104 ©2010 Energy Code Works, Inc. 52
  • 53. 5/20/2010 HERS Measures Duct Sealing •Sealed and HERS verified less than 6% supply fan flow •Change-outs: 15% or less of fan flow Package D, no credit Supply Duct • Conditioned space, buried ducts Credit, lots of documentation Location Supply Duct • Reduced surface area Credit, lots of documentation Credits • NEW CEC certified AHU w/less than 2% leakage. Low Leakage Duct sealing & testing also required. AHU •CHANGED Refrigerant charge verified using one of three methods Refrigerant Invasive, non-invasive & CID. No TXV to trade against Package D, Charge No credit 105 ©2010 Energy Code Works, Inc. HERS Measures Supply Duct Credits Low Leakage AHU Refrigerant Charge 106 ©2010 Energy Code Works, Inc. 53
  • 54. 5/20/2010 HERS Measures Supply Duct Credits Low Leakage AHU Refrigerant Charge 107 ©2010 Energy Code Works, Inc. HERS Measures Proper Refrigerant Charge Verification: Will be very common because of change-out rules Very cost-effective Supply Duct Overcharged or undercharged system can Credits reduce a 14 SEER unit to below 9 SEER Must be performed by an independent Low Leakage HERS rater AHU 108 ©2010 Energy Code Works, Inc. 54
  • 55. 5/20/2010 HERS Measures CID • NEW Charge Indicator Device Credit, not yet available • NEW Requires air handling units maintain supply airflow greater CCA than 350 cfm per nominal ton of cooling capacity across the coil Package D, no credit Fan Watt • NEW Requires fan watt draw less than 0.58 watts per cfm Draw •Package D, no credit • HVAC condenser & coil correctly matched to achieve High EER high EER (above 10) Credit •Credit for A/C equipment having cooling capacity that meets Cooling calculated maximum cooling load. Credit, load calcs req. Capacity 109 ©2010 Energy Code Works, Inc. HERS Measures Evap Cooled • NEW Improves EER, water use limits & duct sealing, air flow, and Condensers refrigerant charge verification required. Credit Ice Storage • NEW Shifts peak energy use to off-peak hours (Ice Bear) A/C Additional HERS measures required Credit Envelope • Sealing, caulking, gaskets. Verified by HERS blower door test. Sealing •Credit • Framing stage field verification then insulation stage verification. QII • New QII verification for Spray Polyurethane Foam •Credit • Not a Title-24 credit, New Solar Home Program requirement Photovoltaic • HERS PV verifications required. 110 ©2010 Energy Code Works, Inc. 55
  • 56. 5/20/2010 HERS Measures HERS Measures most commonly specified for 2008: Duct Sealing Refrigerant Charge Cooling Coil Airflow Fan Watt Draw Photovoltaic QII 111 ©2010 Energy Code Works, Inc. Scope of this Class 7 Beyond Title-24: HERS Measures HERS credits assumed in run: Duct sealing & testing (Package D) Verified fan flow (package D) Refrigerant charge verification (Package D) EER verification (credit) HVAC zoning: (credit) QII (credit) 112 ©2010 Energy Code Works, Inc. 56
  • 57. 5/20/2010 Scope of this Class 7 Beyond Title-24: HERS Measures HERS credits results: 113 ©2010 Energy Code Works, Inc. Scope of this Class 7 Beyond Title-24: HERS Measures HERS credits left remaining: Blower door test Ice storage system Ducts in conditioned space Measured duct surface area Water cooled condenser These credits can be used for plans with more glass area than baseline (20% CFA) Also: Radiant heating Tankless water heater 114 ©2010 Energy Code Works, Inc. 57
  • 58. 5/20/2010 Building Envelope 5 Beyond Title-24: Envelope Results Envelope Improvements Results: Superbatt 6 Radiant Barrier Housewrap Milgard Low-E Windows Adding a tankless water heater would have easily pushed results to 15% better than for LEED 115 ©2010 Energy Code Works, Inc. Building Envelope 5 Beyond Title-24: Extreme Compliance Shipping Container House Metal sides Metal framing 6 Over 50% glass/floor ratio Joshua Tree! 116 ©2010 Energy Code Works, Inc. 58
  • 59. 5/20/2010 Building Envelope 5 Beyond Title-24: Extreme Compliance Shipping Container House Title-24 strategies: Isolated metal framing 117 ©2010 Energy Code Works, Inc. Building Envelope 5 Beyond Title-24: Extreme Compliance Shipping Container House Title-24 strategies: Exterior shading 118 ©2010 Energy Code Works, Inc. 59
  • 60. 5/20/2010 Building Envelope 5 Beyond Title-24: Extreme Compliance Shipping Container House Title-24 strategies: HVAC zoning Ductless split units Tankless water heaters High performance windows/doors 119 ©2010 Energy Code Works, Inc. Beyond Title-24 7 Beyond Title-24: HERS Measures Resistance to HERS measures: HVAC contractors (duct testing): Extra expense “our ducts don’t leak” Insulation contractors: Extra expense Unnecessary, “our installations pass inspection” 120 ©2010 Energy Code Works, Inc. 60
  • 61. 5/20/2010 Beyond Title-24 7 Beyond Title-24: HERS Measures Resistance to HERS measures: HVAC contractors (duct testing): “Our ducts don’t leak” Extra expense Most new ducts leak over 25% Common problems: Poor duct design Connections not to code Leaky fan coil units Ducts not properly supported 121 ©2010 Energy Code Works, Inc. Beyond Title-24 7 Beyond Title-24: HERS Measures Resistance to HERS measures: Duct testing Air Conditioning Contractors of America Quality Installation Specification HVAC industry guide that “establishes minimum criteria for the proper installation, maintenance and servicing of HVAC systems” 122 ©2010 Energy Code Works, Inc. 61
  • 62. 5/20/2010 Beyond Title-24 7 Beyond Title-24: HERS Measures Resistance to HERS measures: Duct testing Air Conditioning Contractors of America Quality Installation Specification Uses identical criteria for allowable duct leakage as Title-24’s HERS duct sealing & testing procedures. 123 ©2010 Energy Code Works, Inc. Beyond Title-24 7 Beyond Title-24: HERS Measures 124 ©2010 Energy Code Works, Inc. 62
  • 63. 5/20/2010 Beyond Title-24 7 Beyond Title-24: HERS Measures Resistance to HERS measures: Insulation contractors: Extra expense Unnecessary, “our installations pass inspection” Why is it more expensive to do it right? What guidelines are insulation contractors using normally? 125 ©2010 Energy Code Works, Inc. Beyond Title-24 7 Beyond Title-24: HERS Measures North American Insulation Manufacturers of America Guidelines for installation of insulation and hiring of insulation contractors 126 ©2010 Energy Code Works, Inc. 63
  • 64. 5/20/2010 Beyond Title-24 7 Beyond Title-24: HERS Measures North American Insulation Manufacturers of America Guidelines virtually identical with HERS QII compliance checklist If contractors follows this checklist they likely will pass HERS QII verification inspection 127 ©2010 Energy Code Works, Inc. Beyond Title-24 7 Beyond Title-24: HERS Measures QII in Title-24 compliance run R-13 wall insulation is derated to R-8 without QII When QII assumed R-13 is improved to R-9.5 Baseline Title-24 assumes poor quality insulation QII is credit for good quality installation 128 ©2010 Energy Code Works, Inc. 64
  • 65. 5/20/2010 Beyond Title-24 7 Beyond Title-24: HERS Measures QII in real world: The good 129 ©2010 Energy Code Works, Inc. Beyond Title-24 7 Beyond Title-24: HERS Measures QII in real world: the bad 130 ©2010 Energy Code Works, Inc. 65
  • 66. 5/20/2010 Beyond Title-24 7 Beyond Title-24: HERS Measures QII in real world: the ugly 131 ©2010 Energy Code Works, Inc. Beyond Title-24 7 Beyond Title-24: HERS Measures QII in real world 132 ©2010 Energy Code Works, Inc. 66
  • 67. 5/20/2010 Beyond Title-24 7 Beyond Title-24: HERS Measures Bottom line HERS measures represent one of the most cost- effective energy savings strategies in the energy code. Energy savings & quality control HVAC contractors and Insulation contractors will Need to become familiar with HERS criteria for compliance. HERS requirements are virtually identical to their own industry installation guidelines 133 ©2010 Energy Code Works, Inc. Beyond Title-24 7 Beyond Title-24: HERS Measures QII Training for Contractors City of Santa Monica www.smgov.net/departments/ose/categories/buildGreen.aspx 134 ©2010 Energy Code Works, Inc. 67
  • 68. 5/20/2010 Compliance Forms Certificate of Compliance (CF-1R) Submitted to plancheck and Prepared by Title-24 consultant or approved copy provided to General designer Contractor Installation CF-6R Installation Certificate CF-4R Field Verification/HERS 135 ©2010 Energy Code Works, Inc. Compliance Forms Certificate of Compliance (CF-1R) Submitted to plancheck and Prepared by Title-24 consultant or approved copy provided to General designer Contractor Installation CF-6R Installation Certificate CF-4R Field Certificate of Installation (CF-6R) Verification/HERS Filled out by contractor and sub- Provided to inspector & HERS Rater contractors & later to the homeowner 136 ©2010 Energy Code Works, Inc. 68
  • 69. 5/20/2010 Compliance Forms Certificate of Compliance (CF-1R) Submitted to plancheck and Prepared by Title-24 consultant or approved copy provided to General designer Contractor Installation CF-6R Installation Certificate CF-4R Field Certificate of Installation (CF-6R) Verification/HERS Filled out by contractor and sub- Provided to inspector & HERS Rater contractors & later to the homeowner Certificate of Verification and Diagnostic (CF-4R) Completed by HERS Rater Registered with CHEERS or Calcerts and copy provided to contractor 137 ©2010 Energy Code Works, Inc. Energy Code Works, Inc. Mark Madison CEPE, CEA, AEE, HERS Rater, GreenPoint Rater, ResNet Rater, Member CABEC, CHEERS 69