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Company Profile Videos

GAC Services: Expect More!

GAC Services: Making Spirits Brighter This Holiday Season

We’ve Got Your Back Paul!

GAC Services | Maryland’s Best Heating, Cooling & Electric Contractor | HVAC Services MD

ACCA 2015 Residential Contractor of the Year – GAC Services

Tech Talk Videos

Is a Heat Pump Right for Your Home? | GAC Services

Why Isn’t My Furnace Starting Up? | GAC Services

When Is the Right Time to Upgrade My HVAC Equipment? | GAC Services

Why Are Odors Coming from My Furnace? | GAC Services

What Should I Look for in a New Furnace? | GAC Services

Why Is My Furnace Blowing Cold Air? | GAC Services

Do I Need an HVAC Tune-Up?

Why Is My Air Conditioner Leaking Water Outside?

What is the Difference Between Air Cleaners and Air Purifiers

Thermostats

T1 Programmable Thermostat Setup Guide | GAC Services | Gaithersburg, Maryland

Housewise Thermostat Setup Guide | GAC Services | Gaithersburg, Maryland

Evolution Connex Thermostat Setup Guide | GAC Services | Gaithersburg, Maryland

$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  
Schedule Service
$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!

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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...
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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
Relax, We’ll Contact You!
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