Leading HVAC Company
in St. Louis

We know you have several options for HVAC companies in St. Louis. For over 100 years,
Design Aire’s reputation as the best HVAC company in the St. Louis, MO, metro area
results from our dedication to customer satisfaction and technical excellence.

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HVAC Professionals
of  St. Louis, MO

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For over 100 Years, Design Aire’s reputation as the best HVAC Company in the St. Louis and St. Charles Metro area
is the result of our dedication to customer satisfaction and technical excellence.

Customer Video Testimonial

Air Conditioning Service
& Maintenance

Air Conditioning
Products & Installation

Heating Service
& Maintenance

Heating Products
& Installation

Air Conditioning



Heating & Air Conditioning Service for your Home

We’re glad you found us. Hundreds of heating and air conditioning repair companies in the Greater St. Louis, MO, area can all start to look pretty similar. Design Aire is not more of the same.

Design Aire’s reputation as the best HVAC company in the St. Louis metropolitan area results from our dedication to customer satisfaction and unparalleled technical excellence.

Design Aire service technicians have an average of over 26 years of experience in the heating and cooling industry. They receive continuing professional education courses each year, so you can be assured that your technician is experienced and expertly trained. In addition, our representatives are background-checked and drug-tested so that you can feel comfortable with Design Aire in your home.

Our technicians provide HVAC services, including furnace repair, furnace installation, AC installation, and AC repair. Additionally, we service boilers, heat pumps, ductless mini-split, and geothermal heat pump systems. Contact us or give us a call today (314) 739-1600 to schedule your service appointment.

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Design Aire is the #1 Trane Dealer in the Midwest!

HVAC Company Serving the St. Louis Metro Area

In 1904, our founder, Frank Fischer, started our family’s company with the motto, “Do a good job at a fair price and treat people right.” Those are simple words, but we try to live up to them every day.

At Design Aire, we realize that you are the most important aspect of our service business. We illustrate that we care about our customers in every facet of our company. Whether you need an emergency AC repair, wish to take advantage of our planned maintenance agreements, or want a new high-efficiency furnace or air conditioner installation, you will get the same great service from Design Aire.

That is our commitment to you. If you are ever not 100% satisfied with the customer service we have provided, please contact us.

As HVAC professionals, you are the key to the growth of our Greater St. Louis HVAC repair company, and we treat you as such. We believe that if you are perfectly pleased with your HVAC maintenance or ac installation from us, you will tell your family and friends about Design Aire when they need a recommendation. That simple concept has worked for four generations and has earned us the title of “Best Heating and Cooling Company” from readers of the St. Louis Post-Dispatch, an A+ rating from the Better Business Bureau, and multiple Angie’s List Super Service Awards.

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Routine Heating & Cooling Maintenance for Your Home

Investing in a Design Aire maintenance plan saves you money by improving the efficiency of your furnace and air conditioner and extending the life of your system with the help of an HVAC technician. Routine maintenance also provides peace of mind that your home’s heating and cooling equipment operates safely with insights and tips from our HVAC contractors. Design Aire offers competitively-priced maintenance plans on conventional furnace and air conditioner systems as well as boilers, heat pumps, and geothermal systems.

In addition to a Union rebate, our planned maintenance customers receive discounts on parts and labor for other heating and air conditioning services Design Aire provides. Contact us to find out more about our maintenance agreements.

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Choose Design Aire for HVAC Service in St. Louis, MO

We’ve provided heating and cooling HVAC installation and service for over 100,000 homes in St. Louis, St. Charles, and the surrounding area. That is a great deal of trust that families have placed in Design Aire, and we do not take it lightly. We aim to make every customer so happy with their service from Design Aire that they feel compelled to tell their family, friends, and neighbors about us.

Our HVAC services company and installs systems throughout St. Louis, including St. Charles, Ballwin, Chesterfield, Clayton, Creve Coeur, Des Peres, Ellisville, Florissant, Kirkwood, Ladue, Maryland Heights, O’Fallon, St. Peters, Webster Groves, Weldon Spring, and Wildwood. Our service area extends to parts of Jefferson County, Franklin County, Madison County, St. Clair County, and Monroe County. Contact Design Aire today to schedule a repair or to get an estimate on replacing your HVAC equipment.


Contact the St. Louis & St. Charles, MO Heating & Cooling Experts

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Design Aire: A Relationship of Trust

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