How to Read ECC Measures on a CF1R
ECC measures sit in the ECC Feature Summary, a short list of features an independent ECC-Rater must test or verify on site. The section was called the HERS feature summary before the ECC Program began on 1 January 2026. Each line needs a registered installer CF2R and a rater CF3R, so read it before equipment is ordered.
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Where to find it
Start at the compliance results statement, which on a modeled certificate says the building "incorporates features that require field testing and/or verification by a certified ECC rater". The ECC FEATURE SUMMARY follows, with this introduction: the listed features "must be field-verified by a certified ECC Rater as a condition for meeting the modeled energy performance", and "Registered CF2Rs and CF3Rs are required to be completed in the ECC Registry". The manual calls this part of the CF1R the ECC required certification section.
What a list looks like
On the registered all-electric ADU certificate we read, six lines appeared: indoor air quality ventilation, kitchen range hood, verified EER or EER2, verified SEER or SEER2, verified HSPF2 and verified heat pump rated heating capacity. A ducted system adds duct sealing, refrigerant charge, verified airflow and fan watt draw, among others in the manual's HVAC list.
What each line sets in motion
- The installer performs the initial testing, completes the CF2R and submits it electronically to the registry; the ECC-Rater, independent of builder and installer, then verifies and signs the CF3R.
- Matching forms in Appendix A include CF2R-MCH-20-H and CF3R-MCH-20-H for duct leakage, MCH-23-H for airflow, MCH-25-H for charge and MCH-27-H for ventilation.
- The rater may not sign a CF3R without the installer's registered CF2R, and the department cannot issue the certificate of occupancy until it has the CF3Rs.
What to do about it
Hand the page to the HVAC contractor before ordering, and book the rater before installation. If the installed model differs from the one listed, the CF1R is revised and registered again, because only the current revision is valid. Features not mandatory in every home appear only when a model took credit for them. The rater's visit is separate from the building inspector's.
See which jobs need ECC verification, what an ECC-Rater does, the ECC Program and finding your CF3R. Our residential service prepares the CF1R.
Common Title 24 Questions
- What is a CF1R certificate of compliance?
- What is a CF2R certificate of installation?
- What is a CF3R certificate of verification?
- What is an NRCC form?
- What is an NRCA certificate of acceptance?
- What is an LMCC form?
Frequently Asked Questions
No. Special features that need no ECC verification are checked by the building department. ECC features need an independent ECC-Rater and a registered CF3R.
The installer performs the initial testing and signs the CF2R. The verification and the CF3R must come from an ECC-Rater independent of the builder and the installer.
Explore CF1R: Certificate of Compliance
- How to Read the Mandatory Measures on a CF1R
- How to Read Your CF1R, Page by Page
- What Is the CF1R for a House?
- CF1R-ALT-01-E, ALT-02-E and ALT-05-E: Which Alteration Form Is Yours?
- CF1R-ENV-02-E, ENV-03-E and ENV-04-E: The Worksheets Behind Your CF1R
View all CF1R: Certificate of Compliance guides → · Forms and Certificates · Title 24 guide