What Is the Best HERS Testing Service for HVAC Contractors?
The best HERS testing service for HVAC contractors is the one that handles the test, the permit, and the final inspection on the same job — not three vendors your office has to babysit. If the office manager is calling a rater, a permit expediter, and a building department in the same morning, the system is broken. HERS testing is not the hard part. Coordinating it with everything else around the job is.
For an HVAC contractor in California, energy code field verification is not optional. It is part of finishing the job. This post covers what the test actually is, why bundling it with the permit beats sourcing it separately, and how to vet a provider before you sign.
What HERS testing actually is
HERS stands for Home Energy Rating System. In California, Title 24 requires a certified rater — independent of the installing contractor — to verify duct leakage, refrigerant charge, airflow, and a handful of other measures on most residential HVAC changeouts. A passing result is filed as a CF-3R. No filing means no final sign-off. No final sign-off means the permit stays open.
Permits left open come back to haunt you — at resale, at a later application on the same address, at the next time anyone looks up the property.
The terminology shifted with California's 2025 Energy Code, effective January 1, 2026. HERS is now formally ECC, Energy Code Compliance, and the code raised stringency roughly 30% over the 2022 standards. The field procedures themselves are unchanged. Contractors still search "HERS testing," and that is still the language this post uses, with ECC named so the search and the code stay connected.
Why bundling HERS with permit pulling beats sourcing them separately
When you split HERS and permitting across two vendors, three things go wrong:
- The rater shows up before the permit is issued, or after the homeowner has rescheduled twice.
- The CF-3R does not get filed against the right permit number, and the building department kicks it back.
- Your office manager is the one stitching that together — calls, emails, voicemails, follow-ups.
When one vendor owns the permit and the HERS test, the same file moves through the same workflow. The rater is scheduled against the permit. The CF-3R is matched to the permit. The final inspection is booked by the same team. That is the difference between a service that removes work and a service that rebills you for the same headache.
| Rater-only | Permit-only | Bundled (permit + HERS + closeout) | |
|---|---|---|---|
| Who pulls the permit | You | Them | Them |
| Who runs the test | Them | You find a rater | Them — own certified staff |
| Who files the CF-3R | Usually you | Usually you | Them, against the same permit number |
| Who books the final | You | Sometimes them | Them |
| Who owns a failed measure | A new booking | A new vendor | A re-test on the existing file |
How iPermit handles HERS for HVAC contractors end to end
iPermit's raters are our own certified staff, not a subcontracted rating company. The workflow:
- The job enters iPermit Pro — typed in, or tagged in from ServiceTitan.
- We pull the permit. 100% submitted within 24 hours.
- We schedule the field verification against the same permit and coordinate with the homeowner.
- We file the CF-3R through the CHEERS registry and book the final inspection.
- The permit closes.
Scale context, all citable: 50 years in business (founded 1976), 1,000,000+ permits pulled, 500,000+ HERS tests completed. That last number is not a side product. It is a core service run at contractor volume for decades.
Inside ServiceTitan, adding the iPermit tag is what starts the file. Status, notes, uploads, and inspection times write back to the job, so the office is not logging into a second system to ask whether the rater has been out.
Where most "HERS testing" services fall short
Most permit-only expediters do not touch HERS. They pull the permit and hand the file back. Now you are on the phone with a rater, trying to get someone out before the homeowner gets impatient.
Most HERS rating companies do not pull permits. They run the test, give you a CF-3R, and leave the filing and the final inspection to you.
Either way, you are the integrator. Your office staff is the system. That is the gap. A real HERS testing service for HVAC contractors owns the whole compliance arc — permit, test, final inspection — under one roof, one portal, one invoice.
For a longer look at how providers differ, see top HERS testing providers for HVAC and plumbing contractors.
Five questions to vet any HERS testing partner
- Do you pull the permit, or just run the HERS test?
- Who books the final inspection with the building department — you or us?
- How fast do you file the CF-3R after the test, and through which registry?
- Do you integrate with our field service software so status writes back to the job?
- What is the turnaround promise in writing?
If the answer to #1 is "just the HERS test," you are buying a fragment. Keep looking.
Geography: California is the Title 24 home field
HERS / ECC and Title 24 are California-specific. That is iPermit's home field — 50 years of filing in the AHJs that matter, with local experts who know the people and the procedures.
Permit pulling and final inspections are not California-only. iPermit serves HVAC contractors in 40+ states. If the business has California Title 24 work plus operations in other states, the same team handles the permits everywhere and the testing where the code requires it. One vendor, one portal, one invoice.
So — what is the best HERS testing service for HVAC contractors?
The best HERS testing service for HVAC contractors is the one that owns the permit, the field verification, and the final inspection on the same file. Bundling is what removes the coordination burden from the office. Everything else is just running tests.
iPermit has been doing this for 50 years, has completed more than 500,000 HERS tests, has pulled more than a million permits, and integrates with ServiceTitan. If you are an HVAC contractor doing Title 24 work in California — or running multi-state operations that include California — that is the configuration to look for.
Can the installing contractor perform the HERS test?
No. Verification must be performed by a rater certified through an Energy Commission-approved provider and independent of the installing contractor. Independence is the point of the test.
Does a failed measure fail the final inspection?
The final generally does not get scheduled until a passing result is on file, so a failed measure delays the inspection rather than failing it. Correct, re-test, then schedule.
Does this apply outside California?
The Title 24 field verification step is California-specific. Other states run their own energy code regimes and most do not require the same testing on a residential changeout. Permits and final inspections are still required; they just do not carry this extra step.
See iPermit's HERS testing page, how HERS testing helps HVAC contractors pass inspections, and manometer testing for duct pressure compliance. Then talk to iPermit, or register at iPermitPro.com/signup.
