Welcome to Cornerstone Heating & Air Conditioning, Inc., proudly serving the Frederick & Washington Counties. With over 28 years experience in heating, ventilation and air conditioning service and sales, you can count on Cornerstone Heating & Air Conditioning, Inc. for high quality service and affordable rates.
Find more information about the advantages of our energy-efficient HVAC systems. We are here to serve you!
For many years, our name has been synonymous with first-rate HVAC services in the Frederick and Washington Counties area. Our product range has grown to meet today's ever-changing demands, continuously adopting the latest energy efficient technology. We offer both installation and service for air conditioning and heating systems, including Hot water and steam boilers and Geothermal Systems as well. Quality maintenance is important to extend the life and performance of your heat and AC units.
Cornerstone Heating & Air Conditioning, Inc.
101 Radio Ln 101
Thurmont, MD 21788
Phone: 240 674-3100
Upgrade to a new energy efficient air conditioning unit and receive a 1 year Labor warranty on any installation performed by Cornerstone Heating & Air Conditioning, Inc.
Save 15% off your next service visit. Contact us for details.