Cornerstone Heating & Air Conditioning, Inc. 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 Acreddited Dealer on their Awesome 18 SEER Inverter HVAC systems. And a dedicated Rheem Dealer as well. We also have a long history of Boiler and Oil Burner work we bring to you. We install Wiel McLain Boilers and Burnham Boilers as well. 

We have excellent relationships with our manufacturers, ensuring we get optimal pricing and rebate notifications. Which we pass along to you, our valued customer! All of the systems we install are energy efficient, environmentally friendly and easy to service and operate. We install a System with the highest efficiency possible with the environment the Equipment has to work in. We design every New Construction system with State of the art HVAC Load design software and have spent many hours in training learning how to design the best system for your dream house or remodel. We even install Geothermal Systems as well. From Residential to light commercial, Indoor air quality and temperature control, Cornerstone Heating & Air Conditiong, Inc. will be there whever and however we can be of help to you.

Check out some of the heating and cooling systems we have recenty installed:

Call Us Today!

Cornerstone Heating & Air Conditioning, Inc.

101 Radio Ln 101

Thurmont, MD 21788


Phone: 240 674-3100



Cornerstone Heating & Air Conditioning, Inc., Residential Air Conditioning Contractors, Thurmont, MD

Special Offers

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.

Service Visit Discount

Save 15% off your next service visit. Contact us for details.

Connect with Us.

Print Print | Sitemap
© Cornerstone Heating & Air Conditioning, Inc.