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Frederick, MD

HVAC Contractors in Frederick, MD

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

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61 HVAC contractors serving Frederick

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 61 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 Frederick

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

  1. Smock Heating & Air

    5.01,822 Google reviewsVerified

    AC repair · Furnace service · Heat pump service

  2. Mays Heating & Air Conditioning

    5.0839 Google reviewsVerified

  3. BPM Heating Cooling & Plumbing

    5.0362 Google reviewsVerified

  4. Urbana HVAC

    5.0168 Google reviewsVerified

  5. American Air LLC. MD.

    5.0144 Google reviewsVerified

  6. Alexair LLC

    5.0118 Google reviewsVerified

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

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Compare quotes in Frederick

61 HVAC contractors serve Frederick, MD. 26 are rated 4.5 or higher on Google and 14 have a perfect 5.0. 39 have a website. Most common services: AC repair, Drain cleaning, AC installation, Cooling services, Ductless systems, Ductwork service….

Verified on Google
22
Average rating
4.5 / 5
Google reviews
10,543

How Google categorizes hvac contractors in Frederick

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

Services hvac contractors in Frederick 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 (1056) · courteous staff (381) · knowledgeable technician (257) · thoroughness (209) · water heater replacement (141) · punctuality (84) · clear explanations (68) · maintenance program (49) · informative staff (33) · humidifier installation (26) · furnace replacement (20) · estimates (18)

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

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How HVAC contractors in Frederick compare

HVAC ContractorsFrederickMDU.S.
Average Google rating (10+ reviews)4.714.74.69
Median Google reviews152225
Reviews for the top quarter374+102+108+
Have a website65%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 Frederick, half of the HVAC contractors we list with reviews have 15 or fewer Google reviews, and 374+ puts one in the local top quarter; the average rating is 4.71 (60 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 Frederick?

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

Which HVAC contractors serve Frederick, MD?

61 HVAC contractors serve Frederick, MD. Highest rated (10+ reviews): Smock Heating & Air (Verified, rated 5.0 on Google from 1822 reviews), Mays Heating & Air Conditioning (Verified, rated 5.0 on Google from 839 reviews) and BPM Heating Cooling & Plumbing (Verified, rated 5.0 on Google from 362 reviews), plus 58 more.

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

61 HVAC contractors serve Frederick, Maryland. 26 are rated 4.5 or higher on Google and 14 have a perfect 5.0. 39 have a website. Most common services: AC repair, Drain cleaning, AC installation, Cooling services, Ductless systems, Ductwork service…. ZIP codes covered: 21701, 21704, 21703, 21702, 21705.

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

Smock Heating & Air (1,822 reviews, rated 5.0), TriState Home Services (1,750 reviews, rated 4.8) and Tuckers Air Conditioning Heating & Plumbing (1,567 reviews, rated 4.9). Review counts are read from each business's Google Business Profile.

Which HVAC contractors in Frederick, MD are open on weekends?

5 HVAC contractors in Frederick, MD publish hours on Google. 5 are open on Saturdays (Smock Heating & Air, TriState Home Services, Wenbrooke Services - Electrical Plumbing Heating and Air and Larry & Sons Plumbing Heating Cooling Drain & Electrical and 1 more) and 4 on Sundays (Smock Heating & Air, TriState Home Services, Wenbrooke Services - Electrical Plumbing Heating and Air and Larry & Sons Plumbing Heating Cooling Drain & Electrical). Use the Open now filter above to see who is open right now.

What kinds of HVAC contractors are in Frederick, MD?

Google lists them under Air conditioning contractor (5), HVAC contractor (5), Air conditioning repair service (4), Heating contractor (4), Air conditioning system supplier (3) and Electrician (3). A business can carry more than one category, so the counts overlap.

HVAC Contractors near Frederick

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FAQ

Questions about Frederick businesses

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

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