Why a HERS / ECC Inspection Is More Important Than You Think

First, What Is a HERS / ECC Inspection?

HERS stands for Home Energy Rating System. In 2026, California officially rebranded it as ECC (Energy Code Compliance), but the underlying process is the same. A HERS or ECC inspection is a third-party field verification performed by a certified rater to confirm that a home's energy systems — primarily HVAC — actually meet California Title 24 energy code requirements.

The key word is third-party. Unlike a self-certification, a HERS inspection is performed by an independent, licensed rater who measures, tests, and documents what's actually installed and how it's performing. The results are filed with California's HERS registry (CHEERS is one of the state-approved registries), creating a permanent, verifiable record.

HERS inspections are required for most HVAC installations, replacements, and new construction in California — including situations many contractors don't realize trigger the requirement.

Why It's More Than Just a Box to Check

1. It Protects Your Contractor's License

California's Contractors State License Board (CSLB) takes Title 24 compliance seriously. If a homeowner files a complaint, or if a building inspector discovers that required HERS measures weren't performed, the contractor of record can face license action. This isn't a theoretical risk — contractors have had their licenses suspended or revoked for failing to obtain required HERS documentation on HVAC jobs.

The HERS inspection certificate is your documentation that you met California's legal requirements. Without it, you have no proof — just your word — that the installation was compliant.

2. It Verifies the System Was Installed Correctly

HVAC systems that are installed correctly on paper but not performing correctly in the field are more common than you'd think. Common issues that HERS inspections catch include improper refrigerant charge, duct systems that fail leakage tests, airflow that doesn't meet specifications, and equipment that wasn't verified against the plans.

A thorough HERS inspection from a qualified rater doesn't just check boxes — it confirms the system you installed is actually working as designed. For contractors who take pride in their work, that confirmation is valuable. For contractors who cut corners, it's a necessary accountability mechanism the customer deserves.

3. It Protects the Homeowner's Investment

An HVAC system that's undersized, overcharged, leaking duct-conditioned air into unconditioned spaces, or not meeting minimum airflow requirements will cost a homeowner significantly more in utility bills — every single month, for the life of the system.

A properly verified system runs at its designed efficiency. For a system rated at 16 SEER, the difference between a properly installed and an improperly installed unit can mean 10–20% higher energy costs over time. Over 15 years, that's thousands of dollars. The homeowner paid for efficiency — the HERS inspection confirms they got it.

4. It's Required for Permit Final and Utility Rebates

In California, many building departments will not finalize a permit without a HERS certificate on file. A permit that doesn't close is a serious problem for both the contractor and the homeowner — it can affect the homeowner's ability to sell the property, refinance, or make insurance claims related to work done under that permit.

Beyond permits, many utility rebate programs — SMUD, PG&E, and others — require a HERS certificate as part of the rebate application. A homeowner expecting a rebate check may be out of luck if no HERS inspection was performed.

What Happens When HERS Inspections Are Skipped

The consequences of skipping a required HERS inspection range from inconvenient to serious, depending on circumstances:

Open permits: The job site stays on the building department's radar indefinitely. An open permit can become a buyer's problem when the homeowner tries to sell.

Retroactive inspections: Building departments can order retroactive inspections. If a duct system has been drywalled over and a duct leakage test is now required, the cost of making that happen falls on someone — usually the contractor.

Fines and citations: California building departments can issue fines for work done without required inspections. These fines can reach thousands of dollars.

CSLB complaints: Homeowners who discover their HVAC job was done without required permits and inspections frequently file complaints with the CSLB. Even if the complaint doesn't result in license action, it consumes time, energy, and potential legal fees.

Choosing the Right HERS Rater Matters

Not all HERS inspections are created equal. A thorough rater who takes accurate measurements, properly tests duct systems, and verifies refrigerant charge using the correct procedure is genuinely protecting you and your customer. A rater who rubber-stamps inspections without doing the work is a liability for everyone.

Look for a CHEERS-certified rater — CHEERS (California Home Energy Rating System) is a state-approved HERS registry whose raters meet California's certification standards. CHEERS-certified ratings are accepted by all California building departments.

At Roo's Ratings, we file with CHEERS and perform thorough, by-the-book inspections. We also offer same-day filing, so your jobs close faster — which is how a HERS inspection should work for a contractor who's already done the job right.