Top HERS Testing Providers for HVAC and Plumbing Contractors

The top HERS testing providers for HVAC and plumbing contractors do more than run a field test — they pull the permit, file the CF-3R, and close the final inspection on the same job record. A provider whose scope ends at the test is a subcontractor you still have to coordinate. iPermit has completed 500,000+ HERS tests and pulled 1,000,000+ permits since 1976.

What separates a top HERS provider from a rater-only service

The distinction is not technical. Certified raters all follow the same standardized Title 24 verification procedures, and a competent rater from any provider will measure duct leakage the same way. The distinction is operational: who owns the workflow before and after the test.

A full-scope provider owns three steps, not one.

1. Pull the permit. The HERS test cannot happen until the permit is issued. If the permit and the test come from two vendors, you are the coordinator between them.
2. Run the field test. Duct leakage, refrigerant charge, and airflow measured by a certified rater, with the CF-3R filed to the registry.
3. Schedule and close the final inspection. The permit cannot close without the final. Without it, the permit stays open — and permits that are left open can come back to haunt you.

If a provider's scope ends at step two, you have a rater, not a service.

Five questions to vet a HERS testing provider

Before you add a provider to your workflow, get answers to these.

1. Do you pull the permit, or only run the test? A rater-only service puts permit coordination back on your office.
2. Do your own raters file the CF-3R, or is filing subcontracted? Subcontracted filing is where a CF-3R lands against the wrong permit number.
3. Do you schedule the final inspection with the building department? If not, your office manager is still on the phone with the jurisdiction.
4. What is your permit submission turnaround? Twenty-four hours is the benchmark worth holding a provider to. A provider who will not commit to a number in writing may not be running at contractor volume.
5. Do you connect to the field service software we already run? For contractors running job data through an FSM, re-keying permit data is a hidden cost on every job.

A provider who answers yes to all five is running the full workflow. A provider who answers yes to two or three is a specialist who needs a coordinator — and that coordinator is you.

Why the provider question matters more than the rater question

A HERS rater is a certified technician who performs the field test. A HERS testing service is a company that employs or dispatches raters and owns the compliance arc from permit intake to permit close.

The distinction matters because the endpoints are different. The rater's job ends when the CF-3R is filed. Your job, as the contractor who pulled the permit, ends when the permit closes. The gap between those two endpoints is exactly where open permits accumulate — and nobody in that gap is being paid to watch it except you.

What in-house raters change operationally

When a provider subcontracts the field work, scheduling runs on the subcontractor's calendar, and a re-test after a failed measure goes back into that same queue. In peak season, that is where weeks disappear.

When the rater works for the same organization holding the permit, the test is scheduled against the job record that already exists, and a failed measure triggers a re-test on the same file rather than a new booking with a third party.

iPermit's HERS raters are our own certified staff. We file the CF-3R through the CHEERS registry and book the final inspection once the filing is on record.

What the numbers mean for contractors

• 500,000+ HERS tests completed
• 1,000,000+ permits pulled
• 100% of permits submitted within 24 hours
• 1,000+ five-star reviews from homeowners
• 1,000+ contractors actively using the service, in 40+ states

A quarter of a million HERS tests is not a side product. That is the volume that comes from running these jobs at the scale of California's residential market across five decades.

Coverage splits by service: permit pulling runs nationwide, and HERS testing is concentrated in California, where Title 24 applies. Local experts on the team know the people and the procedures in each jurisdiction, which matters when an AHJ has a non-standard filing requirement or a rater result needs correcting before the final.

Where plumbing contractors fit

HERS is most commonly associated with HVAC, since equipment changeouts are the primary trigger for Title 24 field verification. Plumbing crews running mixed residential scopes still intersect the same permit-to-close arc, and the coordination problem is identical: the permit has to be pulled, tracked, and closed regardless of whether a HERS measure attaches to it.

The question to ask any provider is the same one either way — do you pull the permit and book the final inspection, or do I handle those?

Are all HERS raters certified the same way?

Raters must be certified through an Energy Commission-approved provider and must be independent of the installing contractor. The certification standard is consistent; what varies between companies is scope of service, dispatch capacity, and whether filing is handled in-house.

Can one provider handle both the permit and the HERS test?

Yes, and that is the model worth looking for. Running both through one provider puts the permit, the test, the CF-3R, and the final inspection on a single job record, which removes the vendor-to-vendor handoffs where compliance timelines usually slip.

What happens if a HERS measure fails?

The contractor corrects the issue and the rater re-tests. Nothing is filed until a passing result is recorded, and the permit stays open until it is. How fast the re-test happens depends entirely on whose calendar the rater is on.

Does a HERS provider need to be local?

Raters must be able to reach the site, so dispatch coverage matters. Familiarity with the specific jurisdiction matters more than proximity — filing conventions and inspection scheduling differ between AHJs in ways that generic coverage does not account for.

If you are an HVAC or plumbing contractor doing Title 24 work in California and want one vendor to own the permit, the test, and the final inspection, talk to iPermit — or register at iPermitPro.com/signup. If you already use iPermit for permit pulling, adding HERS testing is the same intake process: one job record, one invoice.