CF1R, CF2R AND CF3R
To understand California's energy compliance process, think of it as a three-act play. The CF1R, CF2R, and CF3R represent the beginning, middle, and end of the energy testing cycle.
Under the 2025 Energy Code, you may see these referred to as ECC (Energy Code Compliance) forms rather than just HERS, but the function remains the same.
1. CF1R: The "Master Plan"
The CF1R is the blueprint for your energy efficiency. It is created during the design phase using state-approved software.
How it’s used: It dictates which tests are required. If the CF1R says you are getting "High Efficiency" credits, it will automatically trigger a list of HERS/ECC requirements.
Key Detail: This must be registered in a database (like CalCERTS or CHEERS) before you can even pull a building permit.
2. CF2R: The "Contractor's Word"
The CF2R is the installation report. Once the HVAC system or insulation is installed, the contractor logs into the registry and signs this form.
How it’s used: The contractor fills out and submits the form but more often then not, we as ECC/HERS raters will complete it on their behalf.
Key Detail: The contractor has completed the installation and documented the work on the ECC/HERS registry.
3. CF3R: The "Test Report" (Verification)
The CF3R is what most people are actually referring to when they ask for the "HERS Test Report." This is the final document that proves the house actually performs as designed.
How it’s used: An independent, third-party Rater comes to the site, performs physical tests (like a Duct Leakage or Blower Door test), and enters the real-world data into the registry.
Key Detail: If the numbers in the CF3R don't match or beat the numbers in the CF1R, the project fails, and the building department will not grant an Occupancy Permit.