
Sep 8, 2026
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HVAC Company
A family-owned HVAC service company providing heating, cooling, and indoor air quality solutions for homes and businesses in Lexington Park and St. Mary's County.
Great Mills Heating & Air Conditioning is an HVAC contractor based in Lexington Park, MD. Services listed include HVAC repair, HVAC installation, HVAC replacement and HVAC maintenance. 54 years in business, emergency service available and licence #50494.
54
Years in Business
Yes
Emergency Service
Available
Financing Available
Lexington Park, MD
Service Area
Offer
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Great Mills Heating & Air Conditioning lists HVAC repair, HVAC installation, HVAC replacement, HVAC maintenance, indoor air quality solutions and heat pump installation. Contact them to confirm they handle your specific job.
Great Mills Heating & Air Conditioning is based in Lexington Park, MD.
Yes, Great Mills Heating & Air Conditioning lists emergency service. Call them directly for urgent heating or cooling repairs.
Great Mills Heating & Air Conditioning lists licence number 50494. You can confirm it is current with the Maryland contractor licensing board.
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