1,300+ Reviews   |     4.9 Rating  

Licensed HVAC & Electrical Contractors in Maryland

At GAC Services, we pride ourselves on providing outstanding service—but you can’t provide excellent HVAC 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.

Our Licenses

We have the following licenses that are valid throughout Maryland:

  • Maryland State HVAC License: 7541
  • Electric License: 4172
  • Master Gas Fitter License: 88516

To verify these license numbers, check out:

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 301-926-3253 to learn more or to schedule service.

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

$100 Off Panel Replacement or Upgrade!

Restrictions may apply. Offer expires on Sep. 30, 2021. ONE COUPON PER CUSTOMER PER VISIT.

expires 09/30/2021 read more  
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$59 Seasonal System Check Original Price $129

Claim our $59 Seasonal System Check, and your second system is only $129! Ensure your system is ready for the season and prevent costly breakdowns.

Filters need replacing, electrical components tested and safeties need to be verified. We do all that and provide advice on how to improve your comfort and reduce your energy costs. For even more peace of mind, we also offer a maintenance program that provides priority service, seasonal tune-ups and 20% discounts on repair.

Schedule your appointment today.

Coupon good for one system, each additional system is only $129! Restrictions may apply. One coupon per visit. Offer expires on Sept. 30, 2021. ONE COUPON PER CUSTOMER PER VISIT.

expires 09/30/2021 read more  
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Need Service? Schedule a service with us today!


Hear What People
Are Saying

1,300+ Google Reviews
4.9 Star Average Rating
GAC sales rep and the installers arrived at my home on time and were professional. They respected me and my home and arrived masked and gloved (much ap...
On-Time Service
100% Satisfaction
Up-Front Pricing
Factory-Trained Technicians
Fully-Stocked Trucks
Respect for Your Home
Membership Perks
High-Performance Seasonal Tune-Ups
20% Discount on HVAC Repairs
10% Off Electrical Repairs
Priority Service
A Trusted Professional on Your Home Service Team
Reduced Diagnostic Fee
Satisfaction Guarantee
Relax, We’ll Contact You!
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