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2005 Update
Residential & Nonresidential
Energy Efficiency Building Standards


Committee Selected Measures and
Related Proposals for the 2005 Building Energy Efficiency Standards

Alphabetical Listing
See below for a Numerical Listing of the Measures by Priority

Air Side Economizers

Automatic Controls to Shed Load

Cooling Towers

Demand Control Ventilation

Electrically Commutated Motors for HVAC Terminal Unit Fans

Hardwired Lighting

Hydronic System Measures

Improvements for Existing Homes

Improvements for Existing Light Commercial Buildings

Inclusion of Cool Roofs in Title 24

Lighting Controls Under Skylights

Lighting Power Allowances - Area Category Method

Lighting Power Allowances - Complete Building Method

Modular Classrooms

Performance Verification of Nonresidential Systems and Equipment

Residential Air Conditioner Sizing

Residential Construction Quality

Residential Duct Systems

Residential Fenestration

Revise Mandatory Minimum Duct Insulation to R-8 for Nonresidential Occupancies

Revise Prescriptive Envelope Requirements for Nonresidential Occupancies

Simplification of Tailored Method

Size Threshold for VAV Fan Controls

Staged Volume Fan Control

Time Dependent Valuation

T-Bar Ceilings

Water Heating Distribution Loss Performance Improvement Options

Water Heating in Multi-Family


Selected Measures Listed in Order of Priority and Related Proposals (listed below each measure)

The following is the list of the 28 committee selected measures for changes to the Standards. Below each of the 28 measures are other proposed changes that were not top-priority but are closely related. Note: Not all of the measures are in the template format suggested by the Energy Commission in October 2001.

All files are in Adobe Acrobat PDF format.

1. Time Dependent Valuation (Energy Commission, PG&E - Heschong-1, Heschong-2, Heschong-3)
(2 pages, 12 kilobytes)
  Time Dependent Valuation (TDV) Economics (PG&E - Herschong-1)
Time Dependent Valuation (TDV) Hourly Residential Modeling (PG&E - Heschong-2)
Time Dependent Valuation (TDV) HVAC System Performance (PG&E - Heschong-3)
Residential HVAC System Modeling (Energy Commission)
EER/SEER as Indicators of Cooling Efficiency (SCE - Ander-1)
Gas Cooling Technologies (SCG - Springer)
Hourly Water Heating Model for TDV Analysis (Energy Commission)
Residential Computer Modeling (Energy Commission)

2. Residential Air Conditioner Sizing (Energy Commission)
(3 pages 15 kilobytes)
Res and Nonres AC Sizing (Public Comments - Farber)
Res and Nonres Sizing - Accounting for Structural Shading (Public Comments - Farber)
Installed Air Conditioner System Efficiency (Energy Commission)

3. Residential Construction Quality (Energy Commission)
(3 pages 25 kilobytes)
Insulation Depth Gauges (JJH - Gates-07)
Structural Insulated Panels (Sunworks - Stahl)
Re-evaluate Prescriptive Residential U-Factors (NAIMA - Ware-8)


4. Residential Duct Systems (Energy Commission)
(3 pages, 17 kilobytes)
Flex Duct Insulation (JJH - Gates-09)
R-8 as a Mandatory Minimum Duct Insulation (NAIMA - Ware-5)
R-8 Duct Insulation in Residential and Commercial Duct Systems (Public Comments - Lamborn DuctValu)

5. Improvements for Existing Homes (PG&E - Mahone10)
(3 pages, 28 kilobytes)
Application of the Standards to Alterations (Energy Commission)
Replacement Fenestration (Cardinal - DeVito-1)
Energy Efficiency Improvements to Existing Buildings (Cardinal - DeVito-7)
Window Retrofit (ICA - Burt)
Revise the Requirements for Alterations (NAIMA - Ware-6)
Residential Additions and Alterations (HoganSeattle)

6. Performance Verification of Nonresidential Systems and Equipment (Energy Commission)
(3 pages, 23 kilobytes)
Completion and Commissioning Requirements (HoganSeattle)

7. Residential Fenestration (Energy Commission)
(3 pages, 22 kilobytes)
25% Glazing Area Package (Cardinal - DeVito-4)
Improved Cost Effective Prescriptive Values (Cardinal - Devito-6)
Glazing Area (CABEC)
Multifamily Standard (PG&E - Mahone16)
Residential Fenestration U-value (Public Comments - Farber)
Residential West Glazing (Public Comments - Farber)
Res Fenestration Area (Public Comments - Farber)
Res Multi-Family Glazing Area (Public Comments - Farber)
Eliminate Assumption that all Greenhouse Windows Meet Package D Requirements (Public Comments - Farber)

8. Water Heating in Multi-Family (PG&E - Mahone14)
(2 pages, 16 kilobytes)
Central System Standard Design for Multifamily Buildings (Energy Commission)
Multifamily Standard (PG&E - Mahone16)
Multifamily Water Heating (ControlledEnergy)
Multifamily Solar Water Heating Calculations (Sun Earth - Plaisted)
Compare Multi-Family Water Heating Systems - Individual to Individual; Central to Central (Public Comments - Farber)
Modeling of Residential Large Storage Tank/Boiler Water Heaters (Public Comments - Farber)
Make Blanket Requirements for <.58 water heaters apply Consistently for Combined Hydronic vs. Boiler systems (Public Comments - Farber)
Multi-Family / Hi-rise Res DHW (Dodd Followup)
Combined Hydronic and Recirculation (Farber)

9. Water Heating Distribution Loss Performance Improvement Options (Energy Commission)
(PG&E - Mahone14)(1 page, 6 kilobytes)
Insulated Kitchen Piping (JJH - Gates-12)
Undersink Hot Water Recirculation (Hutslar-1)
     Undersink Hot Water Recirculation (MS Excel File, Hutslar-2)
Residential Gas Instantaneous Water Heaters (Controlled Energy)
Residential Tankless Gas-Fired Water Heaters (Public Comments - Farber)
Evaluate Highrise DHW Recirculation Control Credit (Public Comments - Farber)
Modeling of Residential Large Storage Tank/Boiler Water Heaters (Public Comments - Farber)
Determine Appropriate Credits for MF Recirculation Systems (Public Comments - Farber)
Determine Appropriate Credits for SF Recirculation Systems (Public Comments - Farber)
Account for the Use of Heat Tape in DHW Systems (Public Comments - Farber)
Retrofit DHW Recirc (Public Comments - Farber)

10. Revise Mandatory Minimum Duct Insulation to R-8 for Nonresidential Occupancies (NAIMA - Ware-4) (2 page, 17 kilobytes)
Nonresidential Duct Insulation (Energy Commission)
R-8 duct insulation in Residential and Commercial Duct Systems (Public Comments - Lamborn_DuctValu)

11. Improvements for Existing Light Commercial Buildings (PG&E - Mahone09)
(3 pages, 14 kilobytes)
  Energy Efficiency Improvements to Existing Buildings (Cardinal - DeVito-7)
Existing Lighting System Alterations (Energy Commission)
Nonresidential Additions and Alterations (HoganSeattle)
Specify SHGC for Small Glass Additions (Public Comments - Farber)

12. Lighting Power Allowances - Complete Building Method(Energy Commission)
(1 pages, 11 kilobytes)
Elimination of Controls credits (Energy Commission)
Lighting Control Credits (HoganSeattle)
Eliminate Retail Occupancy Type (Public Comments - Farber)
Eliminate Retail from Complete Building Approach (Public Comments - Farber)
Complete Building Approach (Gabel)

13. Lighting Power Allowances - Area Category Method (Energy Commission)
(1 page, 10 kilobytes)
Elimination of Controls Credits (Energy Commission)
Lighting Control Credits (HoganSeattle)
Define Area for Bank/Financial (Public Comments - Farber)
Area Category Approach (Gabel)
14. Demand Control Ventilation (PG&E - Mahone07)
(3 pages. 16 kilobytes)
Demand Control Ventilation (Dodd_Followup)

15. Inclusion of Cool Roofs in Title 24 (Cool Roofs - Prescriptive Requirements)
(5 pages, 21 kilobytes)

16. Automatic Controls to Shed Load(Wattstopper - Jepsen-11)
(2 pages, 12 kilobytes)

17. Air Side Economizers (Energy Commission)
(3 pages, 14 kilobytes)
Economizers (HoganSeattle)
Evaluate Problem that Economizers on Package Rooftop AC Fail to Provide > 40% (Public Comments - Farber)

18. Hydronic System Measures (Energy Commission)
(2 pages, 16 kilobytes)
VSD Pump Control (JJH - Gates-06)
Variable Speed Pumps (Dodd_Followup)

19. Electrically Commutated Motors for HVAC Terminal Unit Fans (Hogan - HoganSeattle)
(3 pages, 12 kilobytes)

20. Cooling Towers (PG&E - Mahone06)
(3 pages, 12 kilobytes)
Condenser Temperature Relief (JJH - Gates -01)

21. Lighting Controls Under Skylights (PG&E - Mahone18)
(2 pages, 15 kilobytes)
Daylighting Controls (Energy Commission)
Require Skylights (SunOptics)
Automatic Controls for Lighting in Daylit Zones (HoganSeattle)
Include Daylighting from Skylights and Controls in Basis of Nonres Standards (Public Comments - Johnson)

22. Simplification of Tailored Method (Energy Commission)
(2 pages, 11 kilobytes)
Eliminate Retail from Complete Building Approach (Public Comments - Farber)
Eliminate Credit for Low LPDs in Merchandise Sales Areas (Public Comments - Farber)
Establish Limits for Wall Display Lighting (Public Comments - Farber)
Eliminate Feature Sales Display Credits ( Public Comments - Farber)
Public Display Credit (Public Comments - Farber)
Tailored LPD Approach (Gabel)

23. Size Threshold for VAV Fan Controls (Energy Commission)
(1 page, 7 kilobytes)
VSD Fan Control (JJH - Gates-05)
Variable Speed Fans (Dodd_Followup)

24. Staged Volume Fan Control (Edison - Ander-2)
(2 pages, 15 kilobytes)
Packaged Single Zone VAV (Energy Commission)
Variable Speed Fans (Dodd Followup)

25. Hardwired Lighting (PG&E - Mahone12)
(3 pages, 18 kilobytes)
High Efficacy Lighting in Utility Spaces (Energy Commission)
High Efficacy Lighting in Bathrooms (Energy Commission)
High Efficacy Lighting in Hotel/Motel Guest Quarters (Energy Commission)
Exterior Lighting (Energy Commission)
Changes to Residential Lighting (NRDC - Horowitz)
Recessed Lighting (Energy Commission)
Require Fluorescent Fixtures to be IC (Public Comments - Farber)
Photocell Requirement on all Residential Exterior Lighting (Public Comments - Farber)

26. Modular Classrooms (PG&E - Mahone15)
(2 pages, 15 kilobytes)
Include Modular Buildings in Standards (Takaki)
Allow Multi-Orientation Compliance for Nonres (Public Comments - Farber)

27. Revise Prescriptive Envelope Requirements for Nonresidential Occupancies (NAIMA - Ware-1)
(2 pages, 14 kilobytes)
Prescriptive Mass Wall Insulation (Dodd_Followup)

28. T-Bar Ceilings (Energy Commission)
(4 pages, 22 kilobytes)
Duct Tightening(PG&E - Mahone08)
T-bar Ceilings (Public Comments - Farber)


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Page Updated: June 24, 2002