Design Aire
HVAC contractor in Maryland Heights, MO.
In Design Aire's own words
Design Aire Heating & Cooling is the leading HVAC Company in St Louis, Maryland Heights, MO & the surrounding areas. We proudly offer HVAC, Furnace, & Air Conditioning Repair, Installation, and Maintenance. We service Residential & Commercial locations, including New Construction Sites. If you are searching for an "HVAC company near me," we are the best Heating and Cooling Company in the St. Louis Metro area, as shown by our dedication to customer satisfaction and technical experience. Schedule your HVAC unit service from the best Heating & Cooling specialists in St Louis & Maryland Heights, MO.
- Trade
- HVAC contractor
- Business address
- 2550 Harley Dr, Maryland Heights, MO 63043
- Telephone
- (314) 897-4305
- Website
- designaire.net
- Hours
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- Monday8:00 am - 9:00 pm
- Tuesday8:00 am - 9:00 pm
- Wednesday8:00 am - 9:00 pm
- Thursday8:00 am - 9:00 pm
- Friday8:00 am - 9:00 pm
- Saturday8:00 am - 9:00 pm
- Sunday8:00 am - 9:00 pm
From the business's Google listing, checked Oct 2026
- Register
- MO register
Recorded as supplied and as found in public sources. This register makes no credential or quality claim about any business; check license status with the state board.
Google Reviews
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We bought our house in January knowing we would need to replace the AC in the first few years. Sure enough after a hot summer our AC was fried. We were recommended Design Aire and couldn’t be happier! From getting the quotes and estimate to scheduling and financing the whole process was straight forward and easy. On install day they arrived early and got done faster than I’d expected! Really happy we went with Design Aire, thanks Brian and Brad for all your help!
Sarah S.
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Had water leaking from the AC unit and got fixed same day. The technician, Tom, did a great job explaining what he found and how he fixed the issue. All around great service.
Andy P.
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Very accommodating and attentive to details!
Omar M.
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Bryant is wonderful! He has a great attitude and is always so pleasant and knowledgeable.
Jill
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Very friendly and being professional while explaining everything needing done in detail.
micah H.
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Zac is the best! Zac came to check on our thermostat and dehumidifier. He’s a real pro! Zac was personable, professional, knowledgeable, courteous, informative, and efficient! He took care of things, explained everything, and gave us some great tips. DesignAire has a great employee in Zac and he deserves a raise and a promotion!! Thanks Zac!
Ed E.
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thomas is thorough, thoughtful kind and respectful. he has great knowledge and accountability.
patricia S.
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Design Aire put the original unit in our house 24 years ago and we have used them ever since. Clay came in to do our Spring check up, and further proved why we use Design Aire!!
Bill S.
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DesignAire provides excellent service!
deborah W.
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Came out the same day when our furnace went out over night. Only charged for what their current furnace tune up special was. Cannot recommend them more. Had them out again for a/c check up Luke was great. Very professional,thorough and friendly. Cannot recommend them more highly. Had Design Aire out for annual furnace maintenance. Friendly, professional, and a great value.
Steve H.
About Design Aire
Design Aire says it has worked in heating and cooling since 1904. Its work in Maryland Heights includes HVAC repair, air-conditioning repair and installation, furnace repair, heating repair, maintenance, tune-ups, heat pumps, indoor-air-quality work, and ductless mini-splits.
Design Aire’s heating and cooling work
The company describes work for residential, commercial, and new-construction settings. It also says it offers financing, rebates, and incentives, and identifies itself as a Trane dealer while naming Trane service and replacement among its offerings.
Design Aire says it maintains and repairs air-conditioning equipment across many makes. The brands it specifically names include American Standard, Bryant, Carrier, Daikin, Goodman, Lennox, Rheem, Ruud, Trane, and York.
Maryland Heights heating and cooling measures
In Maryland Heights, utility gas heats 60% of housing units in 2024, per the American Community Survey. NOAA normals for 1991-2020 put the city’s mean temperature at 56.6°F, with an average high of 66.8°F and average low of 46.4°F.
Reviewers most often mention prompt appointments, technicians explaining findings and repair options, professional conduct, maintenance visits, and installation work; some also describe estimates, scheduling, financing, and same-day repairs.
The business is open from 8:00 am to 9:00 pm every day. It says it has served Maryland Heights and the Midwest for more than 100 years.
Design Aire says its technicians are NATE certified.
Repair, replacement, and upkeep at Design Aire
The company presents AC repair, furnace repair, replacement, installation, and regular maintenance as core services. It also names central air, split systems, and ductless mini-splits, along with maintenance for brands beyond its Trane dealership.
For Maryland Heights households and commercial properties, Design Aire’s published service mix spans both cooling equipment and heating-system work.
Services, brands and warranty details come from the company's own website. Ratings, hours and reviews come from Google. Town figures come from the US Census and NOAA.