(301) 245-6613

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Heating, Cooling & Electrical Services in Maryland

Serving Montgomery County, Frederick County, Howard County and Carroll County, MD

Are you looking for reliable heating, cooling, or electrical services for your home or business in Maryland? Look no further than GAC Services! Based in Gaithersburg, Maryland, GAC is a family-owned and operated heating, cooling, and electrical company that has set the standard for quality service in Maryland.

For reliable heating, cooling, and electrical services, your Maryland neighbors trust GAC Services! To learn more about our services or to schedule an appointment, contact GAC online or call us at (301) 245-6613 today.

Budget-friendly Repairs & Energy-Efficient Air Conditioner Installations

Since our doors opened in 1970, GAC Services has been keeping our customers cool by providing air conditioning services throughout Montgomery County, Frederick County, and Howard County in Maryland. Whether you’re looking for prompt air conditioner repair or you’re ready to upgrade from your unit to a high-efficiency air conditioner, our NATE-certified technicians can help! We service all air conditioner makes and models, regardless of whether or not we installed it.

We sell, install, repair, and perform maintenance service the following cooling equipment:

  • Central air conditioners
  • Heat pumps
  • Zoning systems

Contact us now to schedule air conditioning service in your Maryland home »

Advanced Heating Equipment Installed & Repaired by Maryland’s Top HVAC Technicians.

When you need heating solutions to keep your home in Maryland warm and comfortable, trust the HVAC experts at GAC Services. Our factory trained and nationally certified heating technicians are armed with the best products and can help you identify the most affordable and energy-efficient way to heat your home.

We sell, install, repair, and perform maintenance service the following heating systems:

  • Heat pumps
  • Furnaces
  • Hybrid heating systems
  • Zoning systems


Contact us now to schedule heating service in Montgomery County, Frederick County, or Howard County »

Affordable & Reliable Electrical Services From Certified Electricians in Maryland

GAC Services is pleased to offer comprehensive electrical repairs, replacements, upgrades, and installations to customers throughout the Frederick, Howard, and Montgomery County, MD areas.

  • Electrical upgrades and heavy ups
  • Circuit breaker services
  • Portable generator services
  • Attic and gable fan installations and repairs
  • Recessed lighting
  • Network wiring
  • Outlet replacement
  • Smoke detectors and carbon monoxide detectors
  • Dedicated circuitry
  • And more


Contact us now to schedule electrical services in Gaithersburg, MD & surrounding areas »

Choose GAC Services for HVAC & Electrical Services in Maryland Today

When you need professional HVAC and electrical services in Maryland, count on GAC Services. We will provide the quality of service you need at a price you can afford, and we won’t leave until you’re 100% satisfied.

Ready to schedule air conditioning, heating, or electrical service in your Maryland home? Simply contact us online or by phone at (301) 245-6613!

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.

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. Contact us to learn more or to schedule service today. We’re looking forward to serving you and hopefully making you a customer for life! 

Join GAC's Prime Maintenance Membership

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.

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.