Gagne Heating & Air Conditioning
Gagne Heating & Air Conditioning
Gagne Heating & Air Conditioning is based in Alpharetta and provides HVAC services for homes and businesses. Its residential repair process starts with finding the cause of a problem before recommending a fix.
Last Updated October 2, 2026.
Business Highlights
- Gagne is family-owned and operated.
- Gagne has more than 30 years of HVAC experience.
- Gagne is a Carrier Factory Authorized Dealer.
- Gagne offers a 100% satisfaction guarantee.
- Its HVAC technicians are licensed and insured.
Service Area
Alpharetta, Cumming and Roswell.
Local Business Taking Calls
Gagne Heating & Air Conditioning is one of 11 HVAC companies ProsGrade lists in Alpharetta, Georgia.
11 services listed, including Air conditioning repair, Air conditioning tune-ups and Air conditioning installation and replacement. Open Monday to Saturday. Rated 4.9 from 1,656 reviews.
- Verified listing details
- Service information
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- Public contact information
- Published local profile
How This Business Compares
How Gagne Heating & Air Conditioning compares with the other 10 HVAC companies on ProsGrade in Alpharetta, using public Google ratings and review counts.
- Ranks in the top half of the 11 Alpharetta HVAC companies on ProsGrade by Google rating and review volume.
- Has more Google reviews (1,656) than 8 of the 10 other Alpharetta HVAC companies on ProsGrade.
- One of 11 Alpharetta HVAC companies on ProsGrade rated 4.7 or higher from at least 10 reviews.
Services Covered
11 services- Air conditioning repaircentral AC and ductless mini-split systems
- Air conditioning tune-upsfilter checks; condenser and evaporator coil cleaning
- Air conditioning installation and replacementcentral air conditioners, heat pumps and ductless mini-splits
- Ductless mini-split servicesinstallation, repair and maintenance; zoned heating and cooling
- Heating and furnace repair
- Heating tune-ups
- Furnace and heating installation and replacement
- Heat pump repair, installation and maintenance
- Comfort Club HVAC maintenance planongoing preventive HVAC care
- Commercial HVAC repair
- Commercial HVAC maintenance
Reviews
What customers say
Customers praise the technicians’ knowledge and professionalism. One customer appreciated a technician’s explanation of the problem and cost before a repair began; another recalls Gagne replacing a furnace the next day during winter.
Customer Reviews
Mark Lala
Ann Marcinski
Paul Santiago
Maulik Shah
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Frequently Asked Questions
How often does Gagne recommend an AC tune-up?
Gagne recommends AC maintenance at least once a year, ideally before summer.
How long does an AC installation take?
Timing depends on the equipment, home layout, existing system, ductwork and whether other components need updating. Gagne can provide a clearer timeline after evaluating the home.
Does Gagne offer financing for an AC replacement?
Yes. Financing options are available for qualified homeowners.
Does Gagne offer emergency ductless mini-split repairs?
Yes. Gagne offers responsive service for emergency ductless mini-split repairs.








