Design Aire Heating & Cooling

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

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Customer Video Testimonial

HVAC Professionals
of St. Louis

contact the hvac experts

For over 100 Years, Design Aire’s reputation as the best HVAC Company in the St. Louis 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. There are hundreds of heating and air conditioning companies in the Greater St. Louis area, and they 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 is the result of our dedication to customer satisfaction and unparalleled technical excellence. Design Aire service technicians have an average of over 26 years of experience in the industry. They receive continuing professional education courses each year so you can be assured that your technician is not only experienced but also expertly trained. In addition, our representatives are background-checked and drug-tested so 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 for 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 Service for 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 that every day. At Design Aire, we realize that you are the most important aspect of our service business. In every facet of our company, we illustrate that We Care about Our Customers. Whether you need an emergency repair, would like to take advantage of the benefits of our planned maintenance agreements, 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.

You are the key to the growth of our heating and air conditioning company, and we treat you as such. We believe that if you are perfectly pleased with your service or 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 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. Planned maintenance also provides peace of mind that your home’s heating and air conditioning equipment is operating safely. 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.

furnace maintenanceair conditioning maintenance

Design Aire HVAC Service for the St. Louis Metro Area

We are proud to say that our company has provided heating and cooling installation and service for over 100,000 homes in St. Louis, St. Charles, and the surrounding areas. That is a great deal of trust area families have placed in Design Aire, and we do not take it lightly. Our goal is 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.

We service and install systems throughout St. Louis and St. Charles including 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 also 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 Heating & Cooling Experts

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Design Aire: A Relationship of Trust