Duct leakage
Calibrated diagnostic testing of applicable new and existing duct systems.
Schedule a testECC / HERS field verification · Northern California
Independent HERS/ECC inspections, clear answers, and organized CHEERS documentation for homeowners, contractors, builders, and project teams.
HERS is now ECC
California’s 2025 Energy Code moved field verification and diagnostic testing from the former HERS compliance program into the Energy Code Compliance (ECC) Program. Many contractors and building departments still say “HERS test”—and that is the service people are looking for.
Our certified raters test the measures listed on the approved compliance documents, record results through the applicable registry workflow, and help keep permits moving toward final approval.
Complete 2025 Part 6 measure catalog
The registered compliance documents determine which measures apply. We provide the following ECC/HERS testing and verification services when listed for the project.
Calibrated diagnostic testing of applicable new and existing duct systems.
Verification of applicable duct-location requirements and compliance credits.
Electrical fan-power measurement in relation to delivered system airflow.
Approved diagnostic measurement of airflow through the space-conditioning system.
Verification of eligible cooling-equipment refrigerant charge and operating conditions.
Confirmation that installed equipment matches the approved compliance documents.
Whole-building mechanical ventilation equipment, controls, and delivered airflow.
Verification of return-duct design and air-filter device sizing.
Duct surface-area reduction, insulation, and buried-duct compliance-credit conditions.
Verification of applicable CFVCS components and performance.
Whole-house fan airflow and fan-efficacy diagnostic testing.
Local mechanical exhaust airflow and applicable sound or label verification.
Verification of applicable bathroom and other local mechanical exhaust systems.
Equipment and compliance-credit verification for eligible systems.
Building and dwelling-unit enclosure air-leakage diagnostic testing.
Framing-stage air-infiltration sealing inspection before work is concealed.
Insulation quality verification for gaps, voids, compression, and alignment.
Verification of applicable existing features used for alteration compliance.
Verification of eligible single-dwelling-unit hot-water distribution measures.
Verification-document workflow and coordination with responsible project parties.
Review of legacy records to identify the current CHEERS compliance path.
Review of available documents to identify missing verification within our scope.
Stage-sensitive QII, air-sealing, duct, and envelope inspection coordination.
Focused retesting after the responsible installer completes corrections.
Homeowner help · First-time guidance
Tell us what you know—even if it is only the address. We help identify what the permit requires, explain how to prepare, schedule the inspection, and guide you through testing and CHEERS documentation.
Contractor partner program · Send us your jobs
Use us as your HERS/ECC operations partner. Send one job or a steady pipeline and we can coordinate with the customer, schedule the inspection, perform the required tests, organize documentation, and keep you informed.
Northern & Central California
Serving Sacramento, the Bay Area, San Joaquin Valley, and surrounding counties.
Comprehensive FAQ
Clear guidance for homeowners, contractors, builders, and permit teams.
ECC is the current field-verification program name under the 2025 Energy Code. “HERS test” remains the familiar industry term.
Requirements depend on the building type, permit date, project scope, compliance approach, and approved documents. Many new residential projects and HVAC alterations include field-verification measures; the registered compliance documents identify what applies to a specific job.
Review the CF1R and registered project documents. Send us those documents, the permit, scope, and address so we can confirm the applicable verification forms.
Some projects require local mechanical exhaust verification under CF3R-MCH-32-H. The installed hood must be accessible and operational for airflow and applicable sound or label checks.
They can be included in local mechanical exhaust verification when required by the project documents.
Independent third-party verification protects the integrity of testing and prevents the installer from grading its own work.
Construction and HVAC work should be complete for the scheduled stage, equipment operating, filters installed, registers accessible, and required documents available.
Indoor and outdoor equipment, all supply and return registers, thermostats, electrical disconnects, and applicable attic, crawl-space, envelope, or exhaust locations.
Many single-system inspections take approximately one to two hours. Larger homes, multiple systems, QII, envelope work, and multiple measures require more time.
An authorized adult must provide access unless access has been arranged with the contractor or another responsible person.
We explain the failed measured item. The responsible installer performs corrections, and the affected measure is retested when ready.
No. We verify and document independently; we do not sell equipment or perform the repairs we inspect.
CF1R is the Certificate of Compliance, CF2R is the Certificate of Installation, and CF3R is the Certificate of Verification completed for applicable ECC measures.
Signatures depend on the document and role. Responsible designers, installers, responsible persons, and ECC raters sign the documents assigned to their work.
CHEERS is a CEC-approved ECC Provider that supports certified raters and operates an approved residential data registry.
Send the available CalCERTS records, address, permit, and current status. The project may need to be re-established through the current CHEERS workflow.
Some measures can; stage-sensitive QII, air sealing, duct, and envelope inspections may not be verifiable once concealed. Contact us before covering work.
Some existing systems may qualify for specific exceptions or alternative documentation. Eligibility depends on the actual system and applicable Part 6 requirements.
No. It applies when identified by the project’s compliance approach and documents.
Yes, within our scope. We review the available permit and compliance records to identify missing field verification and registry steps.
Yes. We support single projects and ongoing contractor workflows with organized intake, scheduling, testing, and status communication.
Full address including unit, permit number and date, project scope, CF1R documents, contractor and responsible-installer details, billing contact, and preferred appointment window.
Timing depends on passing results, complete project information, required signatures, and registry readiness. We identify missing items rather than promising an inaccurate deadline.
No. ECC verification supports Part 6 compliance; the local enforcement agency controls inspections, final approval, and permit closure.
Ready when your project is
Address, permit number, scope, and preferred timing are enough to begin.
Request an inspection