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Heating, Air Conditioning & Electric in Maryland

Free Furnace Offer! »

*For a limited time we are offering a FREE FURNACE with the purchase and installation of a combined furnace and cooling system. The cost of the furnace will be subtracted from the AC & Furnace System. The cost of the furnace is based from a Legacy series 80% furnace. Labor and Material are not included in the free giveaway. Utility rebates may be available based on service requested and equipment chosen for installation. Generator discounts are based on kw size 11-16kw savings of $375 and 22kw $500. Certain restrictions apply. We reserve the right to amend or terminate these offers at any time. Prior installations do not qualify.

WSSC: 72505 HVAC: 02-7541 Electric: 4172



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Providing Award Winning Service
to our customers in Maryland.
Nationally Awarded
Bryant Dealer in the U.S.

Cooling, Heating, Electric & More

We’re setting new standards in the Maryland HVAC and electrical market one home at a time.

The GAC team focuses on whole home comfort for Maryland residents.

The GAC team focuses on total home comfort for Maryland residents.

“What do our customers want?” That’s the question that’s been driving the way we do business at GAC from the very beginning—back when you might have known us as Gaithersburg Air Conditioning & Heating!

While our name may have changed, the way we do business has not. We proudly provide:

Up-front pricing. 100% satisfaction guarantee. On-time service. Factory trained and nationally certified technicians. Respect for your home.

These are just a few reasons why your neighbors love working with GAC. It is this commitment to excellence, along with our friendly and honest professionals, that has helped us satisfy tens of thousands of customers throughout Maryland over the years. And it is this that we consider the GAC difference.

Hear what other satisfied customers are saying...

“We wouldn’t think of using anyone else. We have always been very satisfied with your service and your wonderful staff. ****** rating!”

John Micheal, MD
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The information on this website is for informational purposes only; it is deemed accurate but not guaranteed. It does not constitute professional advice. All information is subject to change at any time without notice. Contact us for complete details.