Skip Navigation

Our Licenses

Licensed HVAC, Plumbing & Electrical Contractors in Maryland

At GAC Services, we pride ourselves on providing outstanding service—but you can’t provide excellent HVAC, plumbing and electrical services without the appropriate licenses! That’s why we our proud to announce our license numbers to all of our existing and potential customers, so they know that we’re licensed and certified to perform the best possible HVAC and electrical services in their Maryland homes.

Schedule Online

Our Licenses

We have the following licenses that are valid throughout Maryland:

  • Maryland State HVAC License: 7541
  • Electric License: 14663
  • Master Gas Fitter License: 88516

To verify these license numbers, check out:

  • State of Maryland DLLR for HVAC
  • State of Maryland DLLR for Electricians
  • State of Maryland DLLR for Plumbers

If you still have any questions or concerns, we’d be happy to address them! Feel free to contact us online or give us a call at (240) 224-0192 to learn more or to schedule service.

Schedule Online

Our Community Involvement

Additionally, it’s important to us that when we’re providing high quality services to our neighbors throughout Montgomery County, we’re also involved in the community. That’s why GAC Services is proud to be a member of the Montgomery County Chamber of Commerce, which is an independent non-profit membership organization taking action to help businesses thrive in a strong regional economy.

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

Schedule Online
Financing Options Available
Flexible financing options so you can focus on what matters most to you.
Prime Maintenance
Priority maintenance services can save you from costly repairs down the road.
Why Choose GAC?

Award Winning HVAC, Electrical, & Plumbing Contractor

We strive to be more than just an HVAC and electrical contractor—our goal is to improve people’s lives through better comfort, enhanced efficiency, and greater reliability. Consider the many reasons why your neighbors love working with GAC.
Local. Licensed. Here. 
Neighbors serving Montgomery, Howard & Frederick.
Service With Respect.
We treat your home like our own. Clear, honest, on time.
Planned Comfort Saves Money.
Maintenance plans prevent breakdowns and save big.
We Support Those Who Serve.
Special discounts and priority scheduling for heroes.
About Us
Schedule your service!

Schedule Top-Rated HVAC, Electric, Plumbing, or Air Quality Service, today!

Our Reviews

Creating Happy Customers Since 1970

Our ability to deliver professional and reliable HVAC services has never wavered over the years because we remain dedicated to customer satisfaction and fair employee treatment.

Read Our Reviews
cross