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McDonough, GA

AC and Heating Service in McDonough, GA

Licensed and Fully Insured | Competitive Prices | One-Year Labor Warranty

Licensed and Fully Insured

Competitive Prices

One-Year Labor Warranty

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The Preferred HVAC Contractor in McDonough, GA

Gregg Cowan Heating & Air Inc is the preferred HVAC contractor serving McDonough, GA, and nearby areas. When you need expert HVAC service, you can depend on our technicians to provide the best solutions. Since 1986, we have been providing quality heating and air-conditioning service that is always completed on time and within your budget.


Trust Gregg Cowan Heating & Air Inc with your heating and cooling needs at fair prices.

Outstanding Heating System Services

Whether you need heating system repairs, a heating system replacement, or a new heating system installation, we can provide the best heating services — we guarantee it. Your comfort is our number one priority, and we are dedicated to offering quality heating service with a one-year labor warranty included in every service.

Superior Air-Conditioning System Services

Gregg Cowan Heating & Air Inc is the number-one HVAC contractor offering superior air-conditioning services in McDonough, GA. We provide AC service for systems of all different makes and models. From air-conditioning system replacement to AC repairs and installations, we have your AC needs fully covered.

Full Residential and Commercial AC Services

  • Heating and air-conditioning system service
  • Heating and air-conditioning repairs
  • Heating and air-conditioning unit installations
  • Heating and air-conditioning system replacement
  • Maintenance agreements
  • Duct cleaning


Let us take care of all of your heating and cooling needs with our state-of-the-art HVAC solutions. We focus on offering energy-efficient and cost-effective solutions to improve your indoor comfort all year long.

Contact Gregg Cowan Heating & Air Inc in McDonough

Contact Gregg Cowan Heating & Air Inc for quality heating and cooling services in the McDonough area by calling us today at (770) 872-6089.

Emergency HVAC Service Available in McDonough

Call Gregg Cowan Heating & Air Inc now!

(770) 872-6089

(770) 872-6089

I needed to replace an aging 20-year-old system. I received several quotes, including Gregg's. Gregg and I worked out a deal with a quality Bryant system. Gregg's specs for the unit's efficiency are perfect. I am very pleased with the price, installation, and the system's operation. I highly recommend Gregg Cowan Heating & Air Inc.

- Edward A. on Google

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Gregg Cowan Heating & Air Inc

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