The CEC-CF2R-ALT-05-E is a California Energy Commission (CEC) compliance document required for residential alterations to space conditioning systems exempt from HERS field verification. Revised in January 2019 under the 2019 California Building Energy Efficiency Standards, this certificate of installation applies across all 16 California climate zones. Key exemptions covered include duct system alterations under 40 linear feet, systems previously certified or incorporating specific insulation materials, and cool roof installations with photovoltaic panel exemptions.
Who needs the Cf2R form? California homeowners, licensed contractors, and builders performing prescriptive residential alterations that fall within CEC-defined exemptions from duct leakage testing are required to file this certificate. Project types include space conditioning system upgrades, thermal insulation replacements meeting R-value thresholds, and roofing changes subject to cool-roof compliance criteria. Responsible parties must certify installation compliance before final project approval. For additional California compliance forms and related residential documents, see our energy efficiency certificate and installation certificate collections.
| Question | Answer |
|---|---|
| Form Name | Cf2R |
| Form Length | 19 pages |
| Fillable? | Yes |
| Fillable fields | 827 |
| Avg. time to fill out | 34 min 1 sec |
| Other names | alt 05 e, cf1r alt 05 e, county of santa cruz cf 2r certificate, cf2r alt 05 e form |
