1,400+ Reviews   |     4.9 Rating  

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

$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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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...
Why GAC
On-Time Service
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Up-Front Pricing
Factory-Trained Technicians
Fully-Stocked Trucks
Respect for Your Home
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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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