We're Not
Comfortable
Until You Are
The weather is always comfortable inside your home, thanks to Design-Air Heating & Air Conditioning.
Get Certified HVAC Furnace & Air Conditioning Repair in Decatur Illinois
Design-Air Heating & Air Conditioning is a family-owned and operated HVAC company dedicated to customer satisfaction. Since 1977, we have been repairing, replacing, and maintaining HVAC systems of all makes and models for homes and businesses in Decatur, IL. We are a proud Carrier Factory Authorized Dealer and employ NATE-certified technicians, so you know we have the seal of approval from the best in the industry. If you suspect your AC or furnace is in disrepair, give Design-Air Heating & Air Conditioning a call. We offer after-hours services because we know system breakdowns don’t happen during convenient business hours.
About Us
We've Been the #1 Choice for HVAC Since 1977 in Decatur IL
Design-Air Heating & Air Conditioning is a family-owned and operated company since it was founded by John Hall in 1977. Currently operated by owner Josh Mower, our business continues to grow and thrive. Mower was born and raised in Decatur, IL, and has worked at Design-Air since 2000, providing 20+ years of service as a loyal, dependable employee. He chose to purchase the business from his long-time mentor, John Hall. Our new owner is focused on customer satisfaction and advances in HVAC technology. As the largest downstate geothermal dealer, you can trust our combined experience of 300+ years. Our team serves both residential and commercial customers with sales, service, and installation for air conditioning units and furnaces that are ideal for your home or business. Turn to the experts at Design-Air when you need a system replaced or routine service on your HVAC unit, and we’ll provide you with the comfort you deserve.
Trust Our HVAC Systems for Your Commercial Needs
No matter the season, our dependable HVAC systems will deliver the necessary heating and cooling to keep your business comfortable and functional.
Why Choose Design-Air Heating & Air Conditioning?
Design-Air Heating & Air Conditioning has been the leading HVAC expert for over four decades. Since then, we have provided long-lasting repair, replacement, and maintenance services to homes and businesses throughout Decatur, IL. Here are just a few reasons our customers continue to choose us for their air conditioning & furnace services.
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Free Estimates on Replacements
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In Business For 45+ Years
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Carrier Authorized Dealer
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Emergency HVAC Services
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Family Owned & Operated Business
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NATE Certified Technicians
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In Business For 45+ Years
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Free Estimates on Replacements
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NATE Certified Technicians
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Carrier Authorized Dealer
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Emergency HVAC Services
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Family Owned & Operated Business
