## RA2.5 Installer Requirements - Certificate of Installation Documentation

Certificates of Installation are required when dwelling units utilize features, materials, components, or manufactured devices that are required for compliance with the Appliance Efficiency Regulations and Title 24, Part 6. Certificates of Installation shall indicate the installed features, materials, components, or manufactured devices are in conformance with the specifications 'listed on the Certificate of Compliance for the dwelling. The builder or the installing subcontractor eligible under Division 3 of the Business and Professions Code to accept responsibility for construction or installation, in the applicable classification for the scope of work, shall sign and submit Certificate of Installation documentation and post a copy of the Certificate(s) at the building site for review by the enforcement agency in conjunction with requests for final inspection for each dwelling unit.

When the dwelling unit does not require HERS field verification for compliance, the Certificates of Installation that are posted in the field for review by the enforcement agency at final inspection are not required to be registered certificates from a HERS Provider data registry, but shall conform to all other applicable requirements of 10-103(a)3. The remainder of Section RA2.5 describes the documentation procedures for Certificates of Installation for dwelling units that require HERS verification.

### RA2.5.1 Field Verification, Diagnostic Testing, and Certificate of Installation Registration

For the features, materials, components, or manufactured devices that are 'listed on the Certificate of Compliance indicating HERS verification is required for compliance, the builder shall arrange for the services of a certified HERS Rater prior to installation of the measures so that once the installation is complete the HERS Rater will have ample time to complete the required field verification and diagnostic testing without delaying final approval of the dwelling unit by the enforcement agency.

For all low-rise residential buildings for which compliance requires HERS field verification and diagnostic testing, the Certificate(s) of Installation shall be signed and submitted to a HERS Provider data registry as specified in Standards Section 10-103(a)3 to certify conformance with Part 6. When Standards Section 10-103(a)3 requires document registration, all Certificates of Installation that are applicable to the dwelling unit shall be registered.

When the installation of a measure is complete, the builder or the builder’s subcontractor shall perform all required field verification and diagnostic testing of the installation(s) to confirm compliance with the Standards utilizing the applicable procedures specified in Reference Residential Appendix RA3 or RA1, and submit, or make arrangements for submittal of all required Certificate of Installation information to a HERS Provider data registry. Submittal of Certificate of Installation information to the HERS Provider data registry shall be done electronically.

HERS Raters or other authorized users of the HERS Provider data registry may provide documentation author support to facilitate the submittal of the Certificate of Installation information to the HERS Provider data registry on behalf of the builder or the builder’s subcontractor when such facilitation has been authorized by the builder or subcontractor. Documentation authors shall provide an electronic signature to certify the documentation is accurate and complete. The builder or subcontractor who is eligible under Division 3 of the Business and Professions Code to take responsibility for the construction or installation, or their authorized representative, shall provide an electronic signature to register the Certificate of Installation, to certify the information provided on the Certificate is true and correct, and confirm that the construction or installation complies with the requirements shown on the dwelling unit's Certificate of Compliance that was approved by the enforcement agency. The builder or subcontractor shall make available a copy of the registered Certificate of Installation to the HERS Rater, and post a copy of the registered Certificate of Installation at the building site for review by the enforcement agency in conjunction with requests for final inspection for each dwelling unit.