GAC Services

Our Service Area

Trusted HVAC & Electrical Services in Montgomery County, Frederick County, Howard County and Carroll County

When you need a solution for maintaining year-round comfort in your Maryland home or business, trust the experts at GAC Services. We proudly offer the best HVAC and electrical products and services to our customers in the Gaithersburg area.

Not sure if you live in our service area? Check out this list of cities where we do business.

Montgomery County

  • Aspen Hill
  • Ashton
  • Barnesville
  • Beallsville
  • Bethesda
  • Boyds
  • Brinklow
  • Brookeville
  • Burtonsville
  • Cabin John
  • Chevy Chase
  • Clarksburg
  • Colesville
  • Damascus
  • Darnestown
  • Derwood
  • Dickerson
  • Gaithersburg
  • Garrett Park
  • Germantown
  • Glen Echo
  • Hyattstown
  • Kensington
  • Laytonsville
  • Laurel
  • Montgomery Village
  • North Bethesda
  • North Potomac
  • Olney
  • Poolesville
  • Potomac
  • Rockville
  • Sandy Spring
  • Silver Spring
  • Spencerville
  • Takoma Park
  • Washington Grove
  • Wheaton

Frederick County

  • Adamstown
  • Brunswick
  • Buckeystown
  • Fort Detrick
  • Frederick
  • Ijamsville
  • Jefferson
  • Middletown
  • Monrovia
  • Mount Airy
  • New Market
  • Point of Rocks
  • Tuscarora
  • Urbana
  • Walkersville

Howard County

  • Clarksville
  • Columbia
  • Cooksville
  • Dayton
  • Ellicott City
  • Fulton

Carroll County

  • Linwood
  • New Windsor
  • Union Bridge


If you don’t see your city listed, give us a call at (240) 233-8498 or contact us online to see if serve your area. We look forward to hearing from you!


Join GAC's Prime Maintenance Membership

  • High-performance seasonal tune-ups
  • 20% discount on heating and cooling services
  • 10% off electrical repairs
  • Emergency service
  • Reduced diagnostic fee
  • And more!

Learn About GAC's Financing Options

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$89 Electrical Safety Evaluation

Original Price: $169

Financing Options Available

At GAC, we understand how important a functioning HVAC system is for your home. This is why we offer flexible financing options to help you take care of your new HVAC purchase, so you can get back to taking care of what matters most to you.

Apply Online

Priority Maintenance

A well-maintained HVAC system can save you from having to invest in costly repairs down the road. Learn more about the priority maintenance services offered by GAC Services.

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