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Thermostat Installation in Maryland

Comprehensive HVAC Services

Maryland residents trust us to install and repair the latest, cutting edge technology in the HVAC industry. When it comes to programmable thermostats, make no exception. At GAC Services, we install and repair thermostats that provide live weather updates in your community, have the ability to preset temperatures when your home, away, and asleep, and even alert you when your air filter needs to be changed!

Want to install a new thermostat in your home? Contact us today for an estimate!

Thermostats We Install



  • Full color, touch-screen design – This attractive display can be customized to show one of your photos as the screensaver.
  • Weather forecasts – You can view a local five day weather forecast right on your thermostat!
  • Wi-Fi control capabilities – Many of Bryant’s HVAC systems allow for remote access via Wi-Fi controls. That way you can control the temperature in your home from anywhere in the world.
  • Zoning capabilities – You can control up to eight different zones in your home to cater to individual family members’ preferences.
  • Lifestyle programming capabilities – Program different temperatures for when you’re awake, asleep, at home, away, and on vacation. You can also choose between four different fan speeds for maximum comfort.

Click to view the Evolution Connex thermostat owner’s manual »



  • 4-day local weather forecast – Make sure your kids are prepared for whatever weather, or simply see how nice it will be using the weather forecast feature.
  • Perfect Humidity® – Built-in humidity control technology maximizes comfort in your home all year long.
  • Zoning capabilities – Control up to three different zones in your home at once.
  • Wi-Fi control capabilities – Whether you’re at work, on vacation, or making a quick trip to the store, you can change your heating and cooling settings in your home. All that is needed is a Wi-Fi connection!
  • Smart setback – This technology adapts and learns your heating and cooling preferences, automatically changing to match your preferences.

Click to view the Housewise thermostat owner’s manual »



  • Non-volatile memory – Don’t worry about resetting this thermostat after a power outage. The T1 Programmable Thermostat will retain your heating and cooling settings automatically.
  • 4 preset temperature periods – Add preset temperatures for morning, daytime, evening, and nighttime.
  • Wi-Fi control capabilities – Control your Bryant HVAC system from anywhere in the world, all you need is a Wi-Fi connection!

Click to view the T1 programmable thermostat owner’s manual »

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Estimates for Thermostat Installation from GAC Services

If you’re ready to transform your heating and cooling system with the click of a button, schedule an appointment with GAC Services.

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 to receive an estimate for thermostat installation in Maryland 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
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