Maryland HVAC Contractors
Looking for hvac contractors in Maryland? Below are 10 top-rated hvac contractors serving Maryland in 2026 — every one rated 4.0+ stars with 10 or more verified Google reviews. Compare ratings and review counts, then contact them directly by phone or website. No middleman, no lead fees.
Listings are sourced from public Google Business Profiles and sorted by rating. Are you a Maryland hvac contractor? Add your business free below.
Cornett Heating & Cooling
104 Ritchie Hwy, Pasadena, MD 21122, USA
966 reviews
Reviews via Google
Clarksville Heating & Air, LLC
7380 Coca Cola Dr Suite 121, Hanover, MD 21076, USA
751 reviews
Reviews via Google
Thermal Plus LLC
231 Creekside Commons Ct, Stevensville, MD 21666, USA
203 reviews
Reviews via Google
Cozy Heating & Cooling, LLC
4420 Hillside Ave, Baltimore, MD 21229, USA
133 reviews
Reviews via Google
GAC Services
227 E Deer Park Dr, Gaithersburg, MD 20877, USA
7,200 reviews
Reviews via Google
Boothe's Heating, Air, Plumbing, Drains, & Electrical
43883 Airport View Dr A, Hollywood, MD 20636, USA
4,450 reviews
Reviews via Google
Beltway Air Conditioning, Heating & Plumbing
2600 Cabover Dr unit a, Hanover, MD 21076, USA
2,256 reviews
Reviews via Google
Belair Engineering and Service Company, Inc.
15881 Commerce Ct, Upper Marlboro, MD 20774, USA
1,459 reviews
Reviews via Google
Grove Heating & Cooling
2142 Priest Bridge Court #6, Crofton, MD 21114, USA
1,185 reviews
Reviews via Google
Barstow & Sons Heating and Cooling
1825 George Ave Suite 6, Annapolis, MD 21401, USA
1,173 reviews
Reviews via Google
Data sourced from Google Places. Updated April 12, 2026.
Hiring an HVAC Contractor in Maryland
Buildermuse currently lists 10 hvac contractors in Maryland, averaging 4.9 stars across 19,776 verified Google reviews. That is an unusually strong field — when nearly every firm clears 4.8 stars, response time and availability become the real differentiators, so call two or three rather than only the top result. Most of the crews above operate out of Hanover, Annapolis, and Baltimore.
Maryland licenses this trade at the state level: the HVAC credential is required for all work, regardless of project size. Licensed through local jurisdictions. Licenses renew on a two-year cycle (license issue date). Expect a $400 state application fee. Verify any license directly with the Maryland Home Improvement Commission at (410) 230-6231 before signing a contract. At a minimum, ask for proof of $50,000 in general liability coverage.
Labor is the biggest line item on most bids, and the Maryland market sets the floor: construction workers here average $38.40 an hour — about $79,872 a year — across 166,040 workers statewide, per Bureau of Labor Statistics data. Use that figure as a sanity check when comparing quotes — a bid priced far below market labor rates usually means subcontracted or uninsured crews.
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