Great Mills Htg & Ac Inc
UnclaimedLexington Park, Maryland
About
Great Mills Heating & Air Conditioning Inc. has served St. Mary's County and surrounding southern Maryland communities since 1972, operating from 21305 Great Mills Road, Suite 6 in Lexington Park. The family-owned company provides residential and commercial HVAC installation, repair, and maintenance, including geothermal systems, heat pumps, mini-splits, water heaters, boiler services, and indoor air quality solutions. Factory-authorized dealer status is held for Carrier, Daikin, Rheem, and Amana equipment. Technicians hold NATE certification, and the company maintains 24/7 emergency availability. The service area encompasses all of St. Mary's County with additional coverage in Calvert and Charles counties. The company holds Maryland HVAC contractor license 50494. Verified active operator per https://www.greatmillshtgac.com/ + Carrier dealer locator + Yelp (updated Nov 2025) (Bundle 4 audit 2026-05-28)
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Great Mills Htg & Ac Inc — Lexington Park, Maryland
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