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Gagne Heating & Air Conditioning

Alpharetta HVAC Companies
Ranked #6 in Alpharetta | Grade B+
4.90 (1656 reviews)

Gagne Heating & Air Conditioning

Local HVAC company providing repair, maintenance, and replacement for heating and cooling systems in Alpharetta. Known for clear communication, tidy work, and helpful explanations during estimates and service calls.

Why Homeowners Choose This Business

Local technicians focused on clear estimates and timely service. Appointments available most weekdays and Saturdays. Established presence in Alpharetta with a track record of responsive communication and clean workmanship.

Service Area

Headquartered on Nine McFarland Dr in Alpharetta and serving nearby neighborhoods and towns along GA 400. Call to confirm service to your address.

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  • Service information
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How This Business Compares

A quick local comparison based on review strength, business detail, and local service fit.
  • Has more Google review volume than many local competitors.
  • Shows strong customer satisfaction signals based on review quality and volume.

Services Covered

  Renovation Services
  AC Repair
  Furnace Repair
  Heat Pump Service
  Maintenance
  HVAC Maintenance
  Installations
  AC Installation
  Repairs
  Furnace Replacement
  Thermostat Installation
  Indoor Air Quality
  Ductless Mini-Split Service
  HVAC Diagnostics
  Seasonal Tune-Up
  Air handler repair

Heating and cooling repair, tune-ups and maintenance plans, furnace and AC replacement, heat pump service, thermostat upgrades, and basic indoor air quality solutions.


Reviews

Recent Reviews

4.90

(Based on 1656 reviews)

Reviews frequently highlight knowledgeable technicians who explain options and costs clearly. Many customers note punctual arrivals, tidy work areas, and smooth next-day replacements when equipment fails. Long-time clients mention consistent customer service and reliable maintenance visits. Pricing clarity and step-by-step communication are recurring themes.

Gagne is the best HVAC company I have ever had the pleasure of working with. My experience started with Rick, who quoted me on some indoor air quality products and a new gas furnace. He spent a lot of time with me to make sure I understood what I was getting, and how it compared to the alternatives. He also came prepared with lots of other useful information about HVAC work, like what due diligence questions you should ask any contractor you work with, what their standard work scope is (also shared by the other two companies I was quoted by, but Gagne's is one or two cuts above), and which companies in the area are owned by PE (not all PE Is bad, just understand owner incentives). They installed the new equipment today, and the installation quality from John, Rusty, Tyler, and Philip is BEAUTIFUL and FUNCTIONAL. The plenum box they built contained dampers, I didn't even ask for those. Lots of neatly applied mastic on all the equipment connections, whereas my old furnace was leaky and connected with duct sealing tape. John's installation for our steam humidifier was so thoughtful and immaculately executed: he picked up some copper line for the cold water intake (not included with the OEM kit), asked me where & how I wanted everything routed, and covered details of operating the unit with me. He tied the copper line to the wall with metal anchors and electrical taped the contact points to avoid galvanic corrosion. John then troubleshooted some wiring on my existing thermostat to make sure everything operated smoothly. There were so many instances today during installation where it dawned on me how thoughtful their process is, from end-to-end. For example: (1) their use of Daiken furnaces with stainless steel heat exchangers, which are less likely to crack (potentially leaking CO into your house) and have a lifetime warranty, (2) their future proofing of my system with this furnace which will mate nicely with an inverter AC unit down the road when our AC reaches end-of-life, (3) some unprompted (but welcome!) quick tips from Rick on how to maintain my specific AC outdoor condenser, which they didn’t even install (!), and (4) their sealing of all the components together so the system would not pull in attic air. You would hope that this level of quality would be at least somewhat normal but in my experience with some other players, it is not. You would think all of this would cost an arm and a leg, but their pricing was quite reasonable. During the quoting process Gagne was my third quote; I actually cancelled my 4th & final in-home estimate after Rick walked me through their process and pricing. I truly got the feeling that all of these folks were recommending and installing products in a manner they would want done in their own homes. Of course nobody wants to pay for HVAC, especially if it’s an unplanned expense when it’s super hot or cold outside, but if you need any work done on your home’s systems I highly highly recommend working with Gagne.

I’ve been doing business with Gagne Heating & Air Conditioning for about 10 years, and they continue to be outstanding.

10 years ago, I needed a brand new AC/heating system, and they were amazing from day one. Their customer service is consistently strong, their technicians are knowledgeable, professional, and easy to work with, and the warranty I’ve had with them all these years is worth its weight in gold.

What really sets them apart is how proactive they are — they regularly reach out via text and email to remind me when my bi-annual check-ups are due. It’s one less thing I ever have to think about.

Because they’ve been so reliable over the past decade, there was never any question about who I’d use again when it came time for an upgrade.

Most recently, they removed my manual damper and converted the system to an automatic zoned setup. Their pricing was very competitive, the quality of the work was outstanding, and they completed the installation the same week.

I wouldn’t hesitate to recommend Gagne Heating & Air Conditioning to anyone — reliable, professional, efficient, and truly a company you can trust.

Everyone that I have dealt with at Gagne is exceptional. Their level of professionalism and knowledge is incredible. I have had two furnaces and two air conditioners installed over the last four years and I highly recommend Gagne. They are a family business and it shows in everything they do. They are so neat and efficient, there was not a spec of dust left behind. Yes, I highly recommend Gagne Heating and Air.

Always great service and support. Gagne maintains my systems and ensures they are all operating safely and efficiently.When I had an issue requiring an immediate replacement of my furnace during the height of winter, they saw to it that it was replaced the very next day, without delay. Eric, Rick, and the rest of the team are all great people and go out of their way to do the right thing in support of their customers… and I appreciate that most about them.

I can’t say enough good things about my experience with Daryl Pitts from Gagne Heating and Air Conditioning LLC. He was on time, respectful of our home, and very thorough in his inspection and repair. He explained the problem in plain language, showed me exactly what he was doing, and made sure I was comfortable with the cost before proceeding.

The work was done quickly and correctly, and our system has been running great since. It’s clear that Daryl is both highly skilled and customer-focused. I feel confident knowing we have a trustworthy HVAC company to call, and Daryl will be the first person I ask for.

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Special Offers

Seasonal HVAC Tune-Up

Inspection and performance check to prepare your system for the upcoming season.

Call for current pricing
New System Consultation

In-home assessment and written options for replacement systems.

No-obligation consultation

Frequently Asked Questions

They work on central air conditioners, heat pumps, and gas furnaces common to homes in the area. Technicians also handle thermostats and basic indoor air quality add-ons. For brand-specific questions, it’s best to call with your model details. They can advise whether repair or replacement is the better route.

Published hours indicate Saturday availability. Sunday is typically closed. Exact time slots can vary by season, so booking ahead is recommended. Call to check current openings.

Yes, you can request a visit to review system options and pricing. Reviews mention thorough walkthroughs and side-by-side comparisons. Written estimates are commonly provided after the consultation. Ask about available efficiency ratings and compatibility with your home.

Common signs include uneven temperatures, longer run times, unusual noises, or spikes in energy bills. If the system struggles in extreme weather or short cycles, a diagnostic visit can pinpoint the issue. Addressing small problems early often prevents larger failures. A tune-up can also uncover worn parts.

Most homes benefit from service twice a year—once for cooling and once for heating. Regular tune-ups help maintain efficiency and catch problems early. Filter changes on the recommended schedule are important between visits. Your technician can suggest a plan based on equipment age and usage.
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Opening Hours


  • Monday 7:00 AM – 6:00 PM
  • Tuesday 7:00 AM – 6:00 PM
  • Wednesday 7:00 AM – 6:00 PM
  • Thursday 7:00 AM – 6:00 PM
  • Friday 7:00 AM – 6:00 PM
  • Saturday 9:00 AM – 6:00 PM
  • Sunday Closed

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Business Details


Business Rating
4.90 (1656 reviews) Featured BusinessPro Listing
Address
4095 Nine McFarland Dr, Alpharetta, GA 30004
Phone
Business Type
HVAC Contractor

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