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Heating, Air Conditioning & Electric in Maryland

0% Financing for 12 months on a New Cooling & Heating System. »

*For a limited time we are offering up to $2,750 in discounts with the purchase and installation of a heating and cooling system. These discounts include a manufacturer’s rebate, when available of up to $1,500 on products and equipment, and a utility rebate of up to $1,250. Utility rebates may be available based on service requested and equipment chosen for installation. Certain restrictions apply. We reserve the right to amend or terminate these offers at any time. Prior installations do not qualify.



You’re one step away... from experiencing award winning HVAC and electrical service.

Meet GAC Services

Maryland's #1 Residential Contractor

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Customers Serviced

Experience the GAC difference today.
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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