Welcome to the California Energy Commission

2005 Standards Information

2005 HVAC Change-Out Information

Why would you waste the energy savings from a new efficient air conditioner or furnace by connecting it to a leaky duct system? Properly sealed duct systems will lower your energy bills, increase your comfort and reduce pollution both inside and outside your home.

Beginning October 1, 2005, Title 24 of the Building Energy Efficiency Standards requires that ducts be tested for leaks when a central air conditioner or furnace is installed or replaced. Ducts that leak 15 percent or more must be repaired. More information is available below:

  • Residential Change-out Requirements Climate Zones 2, 12 and 16 - and Alternative to Duct Testing. (PDF file, 2 page, 44 kilobytes). Posted: January 9, 2008. Temporarily removed while updates to Technical information is made.
  • Residential Change-out Requirements Climate Zones 9 to 11 and 13 to 15 - and Alternative to Duct Testing. (PDF file, 2 page, 44 kilobytes). Posted: January 9, 2008. Temporarily removed while updates to Technical information is made.
  • Third Party Contract To provide authorization from the Homeowner to allow the Contractor to be the Homeowner's agent with regard to the HERS Rater. (PDF file, 1 page, 25 kilobytes). Posted: December 7, 2005.
  • Page 5 of CF-6R TXV and HERS verification are required when the coil is replaced in the following climate zones, 2 and 8 to 15. Installer fills out and gives this page to the HERS rater and Building official when a changeout is made. In climate zone 8, to avoid TXV and HERS verification SEER 14 AC or a 0.82 AFUE furnace may be installed.(PDF file, 17 page, 168 kilobytes). Posted: December 1, 2005.
  • Climate Zone by City This document list California cities and their climate zones.(PDF file, 17 page, 176 kilobytes). Posted: October 17, 2005.
  • California Climate Zone Map On Line - Includes link to high quality PDF file.
  • Page 4 of CF-6R Installer fills out and provides this page to HERS rater and Building official when conducting a duct pressurization test for changeout.
    (PDF file, 1 page, 140 kilobytes). Posted: October 17, 2005.
  • Letter to Homeowners about the New Duct-Sealing Requirements
    (PDF file, 1 page, 76 kilobytes). Posted: August 4, 2005.
  • Chapter 9 of the 2005 Building Energy Efficiency Standards, Additions and Alterations in Existing Low-Rise Residential Buildings
    (PDF file, 3 pages, 176 kilobytes) Posted: August 4, 2005.
  • Contractors State License Board's Industry Bulletin on Changeouts - Requires obtaining building permits:
    www.cslb.ca.gov/news/industry20050929.asp

  • For HERS raters and where to get testing equipment contact:
    www.calcerts.com
    www.cbpca.org
    www.cheers.org

Blueprint