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HVAC Promotions

Save up to $3500 on a new heating and cooling system

Trade in your old heating and cooling system in the month of October and receive up to $3500 off a new system. 0% financing is also available. Schedule your FREE, no obligation estimate now. One coupon per customer per visit. Restrictions may apply.

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$129 COMBO - Standard Heating System Cleaning and Inspection (Regularly $330)

Save money on your heating bills AND prevent the build-up of mold and bacteria with our combination offer for a Heating Inspection and Standard System Cleaning! One coupon per customer per visit. Restrictions may apply.

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$100 OFF Indoor Air Quality Products (When you become a Prime Member)

Clean breathable air is an absolute must! Did you know the air in your home can be many times denser with common pollutants and allergens than outdoor air? We offer a wide array of air quality solutions and services, perfect for helping you breathe easier and healthier! One coupon per customer per visit. Restrictions may apply.

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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.

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Electrical Promotions

$89 Electrical Safety Evaluation (original price $169)

For safety and security, schedule one of our certified electricians to inspect your: electrical panel box (up to 400amp), smoke detectors, GFI interior and exterior outlets, and check exterior lighting. One coupon per customer per visit. Restrictions may apply.

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$500 Off Whole-Home Generator & Automatic Transfer Switch Installation

One coupon per customer per visit. Restrictions may apply.

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$50 Off Electric Vehicle (EV) Charging Installation One coupon per customer per visit. Restrictions may apply. expires 12/31/2021 read more  
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$75 Off Electric Panel Replacement or Upgrade

Restrictions may apply. One coupon per customer per visit.

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Prime Membership Exclusive Promotions

$125 OFF Indoor Air Quality Products

Clean breathable air is an absolute must! Did you know the air in your home can be many times denser with common pollutants and allergens than outdoor air? We offer a wide array of air quality solutions and services, perfect for helping you breathe easier and healthier! One coupon per customer per visit. Restrictions may apply.

expires 12/31/2021 read more  
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$50 Off Premium HVAC System Cleaning Premium HVAC System Cleaning (original price $330)

Save money on your heating bills AND prevent the build-up of mold and bacteria with our combination offer for a Heating Inspection and Premium System Cleaning! Restrictions may apply. One coupon per customer per visit.

expires 12/31/2021 read more  
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$100 Off Electrical Panel Replacement or Upgrade

Restrictions may apply. ONE COUPON PER CUSTOMER PER VISIT.

expires 12/31/2021 read more  
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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 for a free replacement estimate on a new cooling system or to schedule service today.

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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