Original research · Published August 2026

A five-star rating doesn't tell you if they're licensed

Homeowners lean on Google reviews to pick an HVAC contractor — a high star rating feels like proof a company is legitimate. So we tested it: across 859 NC HVAC businesses, does a bigger review count mean a contractor's state license is easier to verify? It barely moves the needle.

The finding

We took the 859 businesses from our NC licensing sample — every Google-listed HVAC business we checked against the state board across the Triangle and Greater Charlotte — and sorted them by Google review count. If reviews were a reliable proxy for legitimacy, the share we couldn't match to a license should fall sharply as review counts rise.

It doesn't. 64% of all businesses had no matchable license; among those with 500+ reviews, it was still 47%. A homeowner filtering to only the most-reviewed, best-rated companies would barely improve their odds of landing on a verifiable license.

No-match rate by review count

Share of NC HVAC businesses with no active license matchable by name, grouped by Google review count. The line stays nearly flat — more reviews barely lowers the no-match rate.

Put concretely: 171 businesses in our sample had a 4.5-star-or-better rating, 50 or more reviews, and no license we could match. The five most-reviewed no-match businesses had between 3,366 and 4,576 reviews each — these are large, established-looking operations, not fly-by-night listings.

What this means — and what it doesn't

The same care applies here as in our licensing report: "no match" is not "unlicensed." In fact, a high review count often makes a license harder to match, not easier — the most-reviewed businesses are frequently multi-location operations, franchises, and regional chains whose license is held under a corporate or qualifier name that doesn't match the storefront on Google. That's a matching limitation, not a verdict.

But that nuance doesn't rescue reviews as a licensing signal — it reinforces the point. Whether a business is unmatched because it's unlicensed or because it's a chain licensed under another name, the homeowner looking at its star rating cannot tell, and the rating gives them no help. The takeaway is simple and practical:

Reviews measure customer satisfaction. They say nothing about licensing. Check both — separately.

That second check is free and takes seconds: look up any NC HVAC contractor's license on the registry — the license number, class, status, and the date we checked, for 900+ businesses across North Carolina.

Methodology

The sample is the same 859 businesses as our 2026 NC licensing report: every Google-listed HVAC contractor across the Triangle and Greater Charlotte, checked against the North Carolina State Board's public license search by name and, where available, phone, between August 17 and 20, 2026. Review counts are the Google Maps review totals captured at the time of collection. A business was recorded as no match when we found no active license plausibly belonging to it.

Limitations: review counts are a snapshot and change over time; name-based license matching is conservative and will miss licenses held under differing legal names (which disproportionately affects high-review multi-location businesses); and this is a sample of Google-listed businesses, not a census. The finding is about the relationship between two signals a homeowner sees, not a determination about any specific business.

HVAC Registrar is an independent registry and is not affiliated with the State of North Carolina or any licensing board. "No match found" reflects a name-based search of the public license database on the date shown and is not a determination that any specific business is unlicensed. Figures describe a sample of Google-listed businesses, not a census of licensed contractors.