Does your Google Maps category decide your rank? We read the categories on 432 AC repair listings

Local search advice has a favorite lever. The primary category on a Google Business Profile, the story goes, is the strongest ranking signal an owner controls, so an AC company should pick the category customers type, “Air conditioning repair service” rather than “HVAC contractor”, and add every secondary category that could apply. The usual way to choose is to copy what the top three in your city use.

We tested that. On September 27, 2026 we captured the Google Maps top 20 for “ac repair” in 22 US cities, 11 large metros and 11 small cities, and recorded every category on every listing: 440 results, 432 heating and cooling businesses after screening, 22 searches.

The study we designed did not survive the first read of the data, and the reason is the most useful thing in it. The category you see first on a competitor’s listing is often not the category they chose.

The number to write down first

Here is the benchmark you can check against your own profile in a minute. The median AC repair listing carried 5 categories. The median top three listing carried 7. Among positions 13 to 20 the median was 4, and 26 percent of those listings carried a single category, against 6 percent of the top three.

Positions	Listings	Median categories	Share with one category	Median reviews
1 to 3	66	7	6%	899
4 to 7	88	5	18%	344
8 to 12	110	5	22%	144
13 to 20	168	4	26%	71

Google rewrote the category it showed

Every listing in these results comes with an ordered list of categories, and the first is the one displayed under the business name. We set out to compare listings whose first category was “Air conditioning repair service” with listings whose first category was “HVAC contractor”.

The first pass looked like a clean win for the matching category: it was first on 231 listings and on most of the top three. Then we read the markets one at a time. In 18 of the 22 cities, every listing that carried “Air conditioning repair service” anywhere in its list showed it first: 224 listings, without one exception. In the other 4 cities (Columbus, Nashville, Denver and St. Louis), only 7 of the 57 listings that carried it showed it first.

The same brand makes the point directly. Service Experts showed “HVAC contractor” first in Columbus and Nashville and “Air conditioning repair service” first in Indianapolis, Charlotte and Raleigh. Aire Serv showed “HVAC contractor” first in Nashville and “Air conditioning repair service” first in Raleigh, Bowling Green, Johnson City and Valdosta.

So in most of these cities the list was reordered to put the category matching the search on top. We cannot tell from the outside whether every searcher sees it that way or only these results were served that way. Either way, the category under a competitor’s name in a Maps result is not a reliable read of their primary category.

That also means we withdrew the comparison we came to make. The only honest place to read primary categories is the 4 cities where the list was not reordered. There, 65 of 80 listings showed “HVAC contractor” first and held 9 of the 12 top three slots, while 7 showed “Air conditioning repair service” first and held 2. Four metros are too few to test anything, but it is not the picture the advice paints: in those cities the top three mostly led with the broad category.

Carrying the matching category: common at the top, but so are reviews

Whether a listing carries “Air conditioning repair service” anywhere does not depend on the order, so that question survives. It is carried by 281 of the 432 listings (65 percent), by 56 of the 66 top three listings (85 percent), and by 57 percent of positions 13 to 20. Carriers sat at a median position of 9 against 12.

That looks like the advice working until you check reviews. Carriers had a median of 472 reviews; everyone else had 50. The businesses that fill out their category lists also have the review volume that orders a Maps list (review count against position, rho -0.353). So we split the sample into thirds by review count and compared inside each third:

Reviews	Share carrying it	Median position, carrying	Median position, not carrying
1 to 71	38%	14	13
72 to 592	73%	9	10
600 or more	83%	6	9

In the bottom two thirds, carrying the matching category made no measurable difference to position. Only among businesses with 600 or more reviews did carriers sit higher (rho -0.171, significant), and among independents alone that gap was not significant (rho -0.157). Read it as a lead: among established businesses it may help, and this sample cannot detect a small effect in the lower thirds, which is not the same as showing there is none.

“HVAC contractor” appears somewhere on 88 percent of listings and 92 percent of the top three, close enough to universal that it cannot separate anyone.

More categories: the count follows the reviews

The same test settles the category count. Across the whole list, more categories went with a better position (rho -0.202). But category count and review count move together strongly (rho 0.557): the median listing in the lowest review third carried 3 categories, the middle third 5, the top third 7. Inside each third, we could detect no relationship between count and position (rho 0.121, -0.099 and 0.001, none significant).

Metros and small cities tell the same story at different levels. In large metros the top three carried a median of 7 categories and positions 13 to 20 carried 5. In small cities it was 6 against 3, and a third of listings at positions 13 to 20 carried just one, alongside a median of 28 reviews.

A thin category list and a thin review count arrive together. Adding categories fixes the first. The data gives no reason to think it fixes the second, and the second is the one that tracked position.

What to do with this

• Do not copy categories off the results page. In 18 of 22 cities the first category shown matched the search for every listing that carried it. Read a competitor’s full list from a tool that reports it, or treat what you see as Google’s label.
• Carry the category customers search, as a matter of accuracy. 85 percent of the top three carried “Air conditioning repair service” somewhere, and among businesses with 600 or more reviews carriers sat higher.
• Count your categories against 5 and 7. Fewer than five puts you below the median listing. Expect the count to follow your reviews, not replace them.

What changed in verification

The first run kept 434 businesses. Reading the 15 kept listings filed outside the three air conditioning categories found a radiator shop filed only under a vehicle repair category and a small appliance and restaurant supply listing with no website. The second run removed both, for 5 exclusions in all with a supply house and two duct cleaners.

The larger change came from reading the markets. The first run’s headline, that the search-matching category held most of the top three, was an artifact of the reordering. We added a per-city check of how often a carried category is shown first, and this article reports only comparisons that do not depend on order.

Limits: what this can and cannot tell you

Measured: the categories, review counts, ratings and positions of 432 businesses in the Google Maps top 20 for one query in 22 cities on one day, with chains tagged and every comparison repeated on independents and inside review thirds.

Not measured: any profile’s primary category as the owner set it. We read the order the results returned, and in 18 cities that order was rewritten. We did not test other queries such as “furnace repair”, where a different category would match.

Range restriction: every business here already appears in the top 20. The study can say what sorts the list, not whether a missing category keeps a business off it.

Other explanations: category count and review count rise together, and business age, which we did not measure, plausibly rises with both. This design cannot separate the three.

The number to write down

Five categories for the median listing, seven for the median top three, and a review count that tracks position far more closely than either. Check your own count, carry the category your customers search, and then go back to the reviews.