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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

301-926-3253

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!

$75 Off Electric Panel Replacement or Upgrade

Restrictions may apply. One coupon per customer per visit.

expires 01/31/2022 read more  
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$59 Seasonal Heating Inspection Original Price $129

Allows one of our professionals to examine the inner workings of your heating system to ensure all of the important components are functioning correctly, and safely. In addition, discovering and fixing any issue in the fall or early winter means you’re less likely to have a breakdown when it’s freezing outside. One coupon per customer per visit. Restrictions may apply.

expires 01/31/2022 read more  
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Need Service? Schedule a service with us today!

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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...
Why GAC
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
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