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OPTIONAL:
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California Energy Efficiency Standards
The Building Department will require filing of Compliance Forms CF-1R and MF-1R showing that the residence will meet California Energy Efficiency Standards. Other forms are usually required as well.
While this process can sometimes require an architect or engineer with computer programs, there are prescriptive component packages that can qualify depending on your climate zone. For example, Mendocino County,
except along the coast, is in climate zone 2. A low rise residence could use Alternate Component Package D.
Package D Summary
Insulation:
- Wood Walls R13
- Raised Floors R19
- Ceiling R30
Windows:
- Max U Factor 0.57
- Max SHGC 0.40
(Solar Heat Gain Coefficient)
- Max Total Area 20% of sf
- Max West Facing Area 5%
Space Heating:
- Auto Setback Thermostat
- Electric Not Allowed
- Min Gas AFUE=78%
(Annual Fuel Utilization Efficiency)
- Min Heat Pump HSPF=7.7
(Heating Seasonal Performance Factor)
- Ducts must be sealed and
test under 6% leakage
- Ducts wrapped with R6
in unconditioned areas
Space Cooling:
- Min SEER=13.0
(Seasonal Energy Efficiency Ratio)
- Systems require Refrigerant
Charge Measurement or
Thermal Expansion Valve
- Ducts must be sealed and
test under 6% leakage
- Verified Max Capacity
- 3/4" insulation wrap on
suction line to compressor
Water Heating:
- Max 50 Gal w/o R6 wrap
- 5' R4.2 ins wrap on
H & C pipes from WH
- 6" sep between H & C
on parallel runs - H feed must be insulated to
kitchen if 3/4" or more
This CEC Website
has more information.
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California Climate Zones
Alternative Package D
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For more information call (707) 462-2427 or E-mail Collins By Design
Cal Contractors Lic #B557124
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