Cornerstone Heating And Air Conditioning, Inc.

Cornerstone Heating And Air Conditioning, Inc. The best Heating & Air Conditioning Service and Installation at the most affordable prices!! With a

All types of Heating and Air Conditioning including Boilers, radiant floor and geo-thermal, Air Conditioning, Heat Pumps, Mitsubishi Ductless Mini Split HVAC systems, Indoor Air Quality Products

07/03/2026

HAPPY INDEPENDENCE DAY!

Craning a baby unit in Frederick, Md on this beautiful morning in January. MATR craning & Rigging doing it right.
01/07/2026

Craning a baby unit in Frederick, Md on this beautiful morning in January. MATR craning & Rigging doing it right.

01/01/2026

I would like to take this opportunity to express our sincere gratitude to all our valued customers for a remarkably busy year. We appreciate your continued patronage. To our oil heating customers, I offer my sincerest apologies for the delay in commencing our cleaning services. We will be initiating this process shortly. The recent heating season brought an unprecedented volume of boiler installations, which necessitated our immediate attention. We will be contacting you soon to schedule an appointment. We wish you a pleasant evening and safe travels. We look forward to serving you in the new year. Mike Grissom & David Puddy

Address

101 Radio Lane
Thurmont, MD
21788

Opening Hours

Monday 8am - 5:30pm
Tuesday 8am - 5:30pm
Wednesday 8am - 5:30pm
Thursday 8am - 5:30pm
Friday 8am - 5:30pm
Saturday 8am - 1pm

Telephone

+12406743100

Website

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