We serve Frederick and Washington Counties with a full range of HVAC products including heat pumps, air handlers, and ductless mini split systems. Call 240-674-3100!
Cornerstone HVAC sells the most reliable heating and air conditioning systems on the market. We are now a Trane HVAC Dealer along with being a New Bosch Accredited Dealer on their amazing 18 SEER Inverter HVAC systems. We are also a dedicated Rheem Dealer as well. We have a long history of providing Boiler and Oil Burner work and we install Weil McLain boilers and Burnham boilers as well.
Whether you are in need of a new or replacement boiler, heat pump, radiator, ventilation system, air conditioner, geothermal heating unit, air handler, or ductless mini split system, trust our professionals for HVAC equipment from leading manufacturers with exceptional warranties. Check out some of the heating and cooling systems we have recently installed below!