A permit and independent HERS test is required when making changes to your home’s HVAC system

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The average California home HVAC system leaks 30% of the conditioned air into areas other than living space. To combat this massive energy loss, the State of California requires HVAC replacements to be:

  • Permitted at the local Building Department
  • Installed by a licensed HVAC contractor
  • Tested and verified by an independent HERS Rater

Here’s a summary of the process and who does what:



  – Register project with CHEERS

  – Get permit at local Building Dept

Responsibility: HVAC Contractor

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  – Install new HVAC system

  – Schedule HERS Rater for testing

Responsibility: HVAC Contractor

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3rd party testing and verification

Complete CHEERS Report

Responsibility: HERS Rater

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Risks of not getting a CHEERS report 

A CHEERS report is provided only when a project has passed verification and testing by an independent HERS Rater. If you are working with a contractor who does not pull a permit or use a HERS Rater for final testing, your contractor is breaking the law. Unpermitted and untested HVAC projects:

  • Do not comply with local and state building codes
  • May not be properly installed or operating efficiently
  • Increase utility bills and reduce indoor air quality
  • Potentially lower home resale value and jeopardize future insurance coverage and rates
  • LA Building Official

    “CHEERS has made the Title 24 process easy. The online verification process only takes seconds!”
  • San Diego HERS Inspector

    “Being able to send installers and homeowners to CHEERS to learn more about the Title 24 and the HERS process has been so helpful!”

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