Title 24 Standards
for New Homes

presented by:
Haynal and Company

What is Title 24 Energy Code?

• Calif. Code of Regulations, Title 24, Part 6
• Since 1978
• All new construction to be energy efficient
• Standards are cost effective
• Updated every three years
• California was the first; now other states also have energy codes

Benefits of energy efficiency

• Comfort
• Economic Advantages
• Homeowner saves $$
• State economy more stable
• State exports technologies and expertise
• Avoid building more power plants
• Environmental Health
• Avoid air pollution, and potential spills
• Reduce contribution to global warming

How is it organized?

Areas of Focus

• Building envelope (MM + EB)
• HVAC Systems (MM + EB)
• Water Heating (MM + EB)
• Lighting (MM)
• Appliances - meet federal eff standards

Changes for 1998 Residential Standards

Lighting

• Kitchen Lighting:
  high efficacy general lighting (sufficient, uniform),
  on readily accessible switch at an entrance
  A light in a corner of the kitchen will no longer meet the requirement
• Bathroom Lighting:
  high eff. in each room with shower or bathtub
  OR:
• a. high eff. in utility, laundry, or garage,
  AND
• b. all exterior is high eff. or on motion sensor

Ducts

• Credit for tight ducts, verified through field diagnostic testing by certified HERS rater, is allowed with computer compliance approach
• All closure systems must meet UL 181A and B
• Drawbands with flex duct must meet listed requirements

Fenestration

• SC (shading coefficient) replaced by SHGC (solar heat gain coefficient)
• SHGC values are fixed for drapes, blinds and roller shades
• Note: as of Jan 1, 2002, roller shades may no longer be used for compliance
• Manufactured products must be labeled with U-Value and SHGF (instead of SC)
• Site built: use CEC default values

Other

• Water Heating: credit remains for EF > .53, and must install R-12 blanket if EF < .58, but no extra credit given for R-12 blanket
• Insulation for concrete raised floors: R-8 no longer required in CZ 3 - 10
• Thermal Mass: no longer required for Prescriptive Package D (typical slab floor)

• Space Conditioning: Prescriptive Package D may use any heating system that satisfies Appliance Efficiency Standards, and has setback thermostat
• Alterations: new space conditioning or water heating equipment may use existing fuel type, or must be gas

When will changes take effect?

July 1, 1999

What is the minimum needed to comply?

• Meet MM and EB

• Risks of non-compliance - avoid potential litigation

Turn the regulations into an advantage?

How to show compliance?

• Have accurate calculations prepared, and submitted to Building Department
• Plans and specs clearly include energy features, and CF-1R
• Build to plan, or get revisions approved
• Homeowner's Manual receives: CF-1R, MF-1R, CF-6R, IC-1

Summary:

Title 24 is the minimum requirement !

Early design and efficiency strategies can result in buildings which are more comfortable,

environmentally friendly,

cheaper to operate, and

more marketable !