Gagne Heating & Air Conditioning LLC Heating & Air Conditioning

Gagne Heating & Air Conditioning LLC

(678) 668-8318 »

4095 Industrial DriveAlpharetta, GA 30004   map »

Business overview

Gagne Heating & Air Conditioning services the North Fulton, Forsyth, Gwinett and the Alpharetta, GA area with over 22 years experience. We specialize in heating and air conditioning for residential, commercial, multi-family housing and new construction, and offer high quality energy-saving products. We service, repair, and install all makes and models of heating and air conditioning equipment.

Our Services Include:

- Residential and commercial service
- Heating - services.. and installations
- Air conditioning - vent cleaning and repairs
- Indoor air quality products
- Ask about our payment plans and options
Our highly-trained installation and services department pays attention to detail to ensure customer satisfaction. We provide 100% satisfaction guaranteed, warranties on all parts and labor, and we service all major brands.
We specialize in Carrier, Trane, Amana, and Goodman but we can sell and service any other major brand.

Call Gagne Heating & Air Conditioning today at 678-221-4328 to schedule a free consultation. If you have any other questions or comments, please contact us at


Service Area

  • Alpharetta
  • Buckhead
  • Buford
  • Canton
  • Cherokee/Forsyth County
  • Cobb County
  • Crabapple
  • Cumming
  • DeKalb County
  • Duluth
  • Dunwoody
  • Gwinnett County
  • Norcross
  • Roswell
  • Sandy Springs
  • Woodstock

AC & Heating Types

  • AC Compressors
  • AC System - General
  • Add-ons
  • Air Ducts
  • Any Heating System
  • Boilers & Water Heaters
  • Central Air
  • Central Heating
  • Controls & Thermostats
  • Custom Designed Systems
  • Duct Work
  • Electric Heat
  • Energy Efficient & Low Cost
  • Evaporative Cooling
  • Fans
  • Filters
  • Forced Air
  • Furnaces
  • Gas & Oil Heat
  • Heat Pumps
  • Humidifiers & Dehumidifiers
  • Purifiers & Allergy Control
  • Refrigeration &Coolers
  • Rooftop Units
  • Ventilation
  • Wall Units


  • Commercial Accounts
  • Duct Cleaning
  • Emergency Installation & Repair
  • Estimates
  • Inspecting & Testing
  • Installation
  • Maintenance & Tune-Up
  • Repair
  • Replacement & Conversion
  • Retrofitting
  • Sheet Metal Work


  • Amana
  • American Standard
  • Aprilaire
  • Armstrong
  • Bryant
  • Carrier
  • Comfort-Maker
  • GoodCents
  • Heil
  • Janitrol
  • Lennox
  • Puron
  • Rheem
  • Ruud
  • Tempstar
  • Trane
  • Weathertron
  • York


GA State License # CN210405, EPA Certified, & Fully Insured.

Hours of Operation

  • MON
  • 7:00am
  • 6:00pm
  • TUE
  • 7:00am
  • 6:00pm
  • WED
  • 7:00am
  • 6:00pm
  • THU
  • 7:00am
  • 6:00pm
  • FRI
  • 7:00am
  • 6:00pm
  • SAT
  • 7:00am
  • 6:00pm
  • SUN

* 24-Hour Service Available

Payments Accepted

  • American Express
  • Cash Only
  • Debit Card
  • Diner's Club
  • Discover
  • Mastercard
  • Money Orders
  • Personal Checks
  • Visa

Year Established



[PDF] Frequently Asked Questions

Green Credentials

We offer high quality energy-saving products- call us to learn more.

Languages Spoken

  • English


View More »

Knowledgable and fast, 9/03/2014

We had a technician come out and repair our AC. he fixed the problem quickly. they are not cheap but you get the value for money

Thank you, 1/29/2014

Heat stopped working in our rental house the morning after Jan 2014 snow storm...Eric, one of the owners of Gagne Heating and air, was unable to send tech out that day due to hazardous road... conditions but walked us through on the phone how to manually start our furnace so that we wouldn't freeze. Thank you so much.


Videos & Photos

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Photos (12 photos)

  • Working at CSS.  Sunday afternoon install to get customer some cooling.
  • Packaged Products
  • Furnaces
  • Evaporator Coils and Fan Coils
  • Duct Free Split Systems
  • Controls and Thermostats
  • Air Conditioners and Heat Pumps
  • Air Quality Solutions

Linked Review


Reviews: 2

These guys are the best!

Our A/C went out on a hot hot day. One phone call to Gagne Heating and Air, and they came out in less than half an hour! They fixed it right away for much less than I was expecting. They took the time to explain the parts that were being replaced, and showed me why the parts failed. This extra step made my wife and I feel a lot better about getting this repair. We have been searching for a good heating and air company to use and we have finally found one!

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More Reviews


Reviews: 1

Exceptional knowledge and Service

Our 15 year old Air conditioner died 3 weeks ago. After getting quotes from 3 local Trane dealers we chose Gagne AC for the job. They were very honest and up front with what they were quoting. They asked us what we wanted and designed a system around our requirements. The system has been running for 2 weeks. WOW!!! We cannot believe how much more comfortable our home is now. The new system is so quiet and maintains our house at the exact setpoint on the thermostat. We will NEVER use another AC contractor after this GREAT experience. Thank You!!!

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Reviews: 1

Great Service!!!! Highly recommend!

service was outstanding. was willing to assist me with troubleshooting my problem over the telephone before extending to come for service. Even followed up to see if the troubleshooting had worked... where can you get service like that... amazing, great work

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Reviews: 1

Great service from a small, local business!

On a Sun. afternoon (8/9/09), upstairs air died. Within the hour, both Gagne's (owned by brothers) showed up and quickly diagnosed and got some cooling working. Gave me the options and actually recommended the LEAST EXPENSIVE as the best way to go for a permanent fix (new evaporator for about $1000 vs. new system for $5000).

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Album: Generic
1 of 5

Working at CSS. Sunday afternoon install to get customer some cooling.