About

Great Mills Heating & Air Conditioning

About

Great Mills Heating & A/C, Inc provides residential and commercial air conditioning, heating, furnaces, water heaters, mini splits, indoor air quality, and geothermal sales and service to St. Mary's County, MD, and surrounding areas.

Year Established

1972

Specialties

  • Residential and Commercial HVAC Sales, Service, and Installation
  • Geothermal
  • Furnaces
  • Heat Pumps

Languages

  • English

Products

Business Hours

Mon - Fri
-
Sat - Sun
Closed
Emergency Services Available After 4:00 PM – Contact (240) 925-2230

Services

  • Residential Furnace Repair
  • Water Heaters
  • Mini-Splits
  • AC Services
  • Heat Pumps
  • Indoor Quality Quality
  • Geothermal Heating and Cooling
  • Light Commercial HVAC Services
  • HVAC Maintenance Plans
  • HVAC Service Replacement
  • Furnaces
  • Heat Zoning
  • Gas Furnaces

Holiday Hours

Pickup and Delivery

Payment Options

  • American Express
  • Cash
  • Check
  • Discover
  • Financing
  • MasterCard
  • Visa

Associations

  • NFIB - National Federation of Independent Business
  • NATE Certified - North American Technician Excellence

Brands

  • Carrier
  • Amana
  • Daikin
  • WaterFurnace

Good to Know