Professional and Friendly: That’s how we do business!

Comprehensive Air Conditioner Services in Maryland

AC Repair, Installation, Replacement & Maintenance in MD

When you need a solution for keeping your home in Maryland cool and comfortable, trust the experts at GAC Services. Our factory trained and nationally certified technicians are armed with the best products and can help you identify the most affordable and energy efficient way to cool your home.

When you’re ready to experience the GAC difference and our award winning service, contact one of our friendly professionals. We’re looking forward to serving you and hopefully making you a customer for life!

Ready to schedule AC services for your home or office? Contact GAC! Give us a call or contact us online to schedule service.

Our Air Conditioning Solutions for Maryland Homeowners

Air Conditioner Services in Montgomery County, Frederick County & Howard County, MD

Since our doors opened in 1970, we’ve been keeping our Maryland customers cool with air conditioning services in Montgomery and Frederick counties. Whether you’re looking for prompt AC repair or you’re looking for a new, energy efficient air conditioner, our NATE-certified technicians are experts in all AC makes and models. Our air conditioning services include:

As always, we offer up-front pricing on all of our repairs—providing you with pricing based on the job, not by the hour.
You can also protect your cooling investment by signing up for an AC maintenance plan with GAC. We’ll inspect your unit every year, catching major repairs before they happen and allowing you to extend the life of your equipment.

Our Air Conditioning Solutions for Maryland Homeowners

As the cost of energy rises, GAC is more determined than ever to find ways to save you money on your energy bills. That’s why when it comes to cooling AND heating your home, we can’t say enough good things about a heat pump system.

Why purchase, install, repair, and maintain two HVAC systems when you can have it all with one convenient, energy-efficient unit? We service:

Heat pumps work by transferring heat—out of your home in the summer and into your home in the winter—rather than by converting energy into heat. For this reason, if you currently heat and cool with electricity, a heat pump can save you as much as 30 to 40 percent on your energy bills.

For heat pump service in Maryland with 100 percent satisfaction guaranteed, give us a call!

About GAC Services

GAC is a family owned and operated HVAC and electrical company in Gaithersburg, Maryland. While we may be located in Gaithersburg, our technicians travel to homes and businesses throughout the state of Maryland and Washington, DC.

Our mission: To build long lasting client relationships by providing professional, honest, reliable and valuable personalized indoor comfort and energy solutions.

Since 1970, our company has been providing professional and reliable cooling services. Our air conditioning technicians are trained and certified to bring you quality services each and every time. We are the only air conditioning company you will ever need. What makes us different than other HVAC companies? Check out the GAC difference below!

The GAC Difference

“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 hasn’t.


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. We’re looking forward to serving you and hopefully making you a customer for life!

We proudly serve the following locations in Maryland:

Montgomery County: Ashton, Barnesville, Beallsville, Bethesda, Boyds, Brinklow, Brookeville, Burtonsville, Cabin John, Chevy Chase, Clarksburg, Damascus, Derwood, Dickerson, Gaithersburg, Garrett Park, Germantown, Glen Echo, Kensington, Laytonsville, Montgomery Village, Olney, Takoma Park, Poolesville, Potomac, Rockville, Silver Spring, Spencerville, Washington Grove

Howard County: Clarksville, Columbia, Cooksville, Dayton, Ellicott City, Fulton, Glenelg, Highland, Woodbine

Frederick County: Adamstown, Braddock Heights, Buckeystown, Frederick, Ijamsville, Middletown, Monrovia, Mt. Airy, New Market, Urbana

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