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Gaithersburg, MD

HVAC Contractors in Gaithersburg, MD

56 HVAC contractors in Gaithersburg, Maryland, with Google ratings, hours and websites where the business has them.

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56 HVAC contractors serving Gaithersburg

Recommended businesses first, then businesses that have claimed their profile, then Verified ones, then by Google rating and review count. Use Sort to see highest rated first.

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Page 1 of 2 · 48 of 56 shown. Recommended businesses first, then businesses that have claimed their profile, then Verified ones, then by Google rating and review count. Use Sort to see highest rated first.

Top rated

Highest-rated hvac contractors in Gaithersburg

Ranked by Google rating, then review count. Only businesses rated 4.5 or higher with 5+ Google reviews qualify.

  1. Simply Home Service

    5.0181 Google reviewsVerified

  2. Potomac HVAC

    5.089 Google reviewsVerified

  3. P&Y Heating and Cooling

    5.076 Google reviewsVerified

  4. AirPro Heating and Cooling

    5.056 Google reviewsVerified

  5. Mario Bro Heating & Cooling

    5.053 Google reviewsVerified

  6. Evans Heating & Air Conditioning

    5.044 Google reviews

See every hvac contractors in Gaithersburg sorted by rating · Best of Gaithersburg across every trade

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56 HVAC contractors serve Gaithersburg, MD. 28 are rated 4.5 or higher on Google and 12 have a perfect 5.0. 46 have a website. Most common services: Electrical installation, Electrical repair, HVAC installation, HVAC repair, Maintenance, Plumbing installation….

Verified on Google
27
Average rating
4.7 / 5
Google reviews
15,575

How Google categorizes hvac contractors in Gaithersburg

Primary and secondary categories from each business’s Google Business Profile. Tap one to filter the list.

Services hvac contractors in Gaithersburg list on Google

Service names as each business entered them on its Google Business Profile, with how many businesses list each one.

What reviewers mention

knowledgeable staff (2081) · knowledgeable technician (658) · courteous staff (476) · clear explanations (393) · thoroughness (386) · electrical work (75) · quick diagnosis (66) · heat pump installation (43) · ev charger installation (27) · capacitor replacement (15)

Topics Google extracted from customer reviews of hvac contractors in Gaithersburg, with the number of reviews that mention each.

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Page One Partner Research

How HVAC contractors in Gaithersburg compare

HVAC ContractorsGaithersburgMDU.S.
Average Google rating (10+ reviews)4.744.74.69
Median Google reviews442225
Reviews for the top quarter260+102+108+
Have a website82.1%64.5%60.6%

Businesses listed in our directory, not every business in the market. Updated October 2026. HVAC Contractors industry report · What is a good rating for HVAC contractors? · Best cities for HVAC contractors

From Page One Partner Research

  • In Gaithersburg, half of the HVAC contractors we list with reviews have 44 or fewer Google reviews, and 260+ puts one in the local top quarter; the average rating is 4.74 (56 listed in our directory). HVAC Contractors industry report
  • A good Google rating for HVAC contractors: in our directory, the median is 4.8 and at least a quarter hold a perfect 5.0. Half of them have 25 or fewer reviews. What is a good rating for HVAC contractors?
  • Maryland businesses in our directory average 4.56 stars on Google, ranking 13 of the 50 states we measured; 28.3% list no website. Ratings in every state

Quick answers

Who serves Gaithersburg?

Names and Google ratings, straight from each business's profile.

Which HVAC contractors serve Gaithersburg, MD?

56 HVAC contractors serve Gaithersburg, MD. Highest rated (10+ reviews): Simply Home Service (Verified, rated 5.0 on Google from 181 reviews), Potomac HVAC (Verified, rated 5.0 on Google from 89 reviews) and P&Y Heating and Cooling (Verified, rated 5.0 on Google from 76 reviews), plus 53 more.

How many HVAC contractors serve Gaithersburg, MD, and how are they rated?

56 HVAC contractors serve Gaithersburg, Maryland. 28 are rated 4.5 or higher on Google and 12 have a perfect 5.0. 46 have a website. Most common services: Electrical installation, Electrical repair, HVAC installation, HVAC repair, Maintenance, Plumbing installation…. ZIP codes covered: 20879, 20877, 20878, 20882, 20885.

Which HVAC contractors in Gaithersburg, MD have the most Google reviews?

GAC Services (7,940 reviews, rated 4.9), Michael Bonsby HVAC Plumbing & Electrical (1,794 reviews, rated 4.8) and Presidential Inc. (1,624 reviews, rated 4.9). Review counts are read from each business's Google Business Profile.

What kinds of HVAC contractors are in Gaithersburg, MD?

Google lists them under Air conditioning contractor (2), Heating contractor (2), HVAC contractor (2), Plumber (2), Electrician (1) and Insulation contractor (1). A business can carry more than one category, so the counts overlap.

HVAC Contractors near Gaithersburg

All of Maryland · Cities A–Z

FAQ

Questions about Gaithersburg businesses

How businesses get here and how up to date everything is.

Yes. Page One Partner is a free directory of local service businesses across the United States. It costs nothing to search, and nothing for a business to be listed. Each profile is built from the business's public Google Business Profile, and an owner can claim, update or hide theirs at any time by contacting info@pageoneinsights.com.

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