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Design Aire Heating & Cooling - the top HVAC company in St. Louis - yard sign in front of a home

Florissant, MO HVAC Contractors

Design Aire Heating & Cooling is a leading HVAC contractor that has been serving the Florissant for more than a century.

   Request A Free Estimate From Design Aire Heating & Cooling: (314) 739-1600

Request A Free Estimate:

(314) 739-1600

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Our experienced technicians at Design Aire Heating & Cooling are fully and insured to provide reliable repairs, installations, and replacements for all of your heating and air conditioning needs in Florissant, Missouri.  

Our Florissant, MO heating & cooling services include:

No matter your concern, we’re available 24/7 to help. Call (314) 739-1600 to schedule services or request a free online estimate.

Our knowledgeable HVAC technicians are trustworthy, honest, and transparent, and have an average of 26 years of experience in the industry. You can rest assured that our team is focused on integrity, not on making the next sale. Our representatives are background-checked, drug-tested, and receive continuing professional education each year. They are highly qualified to perform the services you need on your heating and cooling systems, as well as the installation of new equipment.

A Trusted Florissant Heating & Cooling Company Since 1904

Since 1904, Design Aire has served St. Louis County with quality installations, repairs, and emergency services that are backed by our customer satisfaction guarantee. Our techs are always on-call to provide emergency repairs and services across Florissant. 

We service the following zip codes in Florissant: 63031, 63032, and 63033.

Call us today at (314) 739-1600 or contact us online to request service, get a free estimate, or learn about our HVAC maintenance plans.

Problems with an AC unit can be frustrating for homeowners, particularly when they occur in the heat of the summer. Our skilled HVAC technicians can provide fast, efficient, friendly service in Florissant to resolve your cooling problems. In addition to air conditioning repair services, we offer regular maintenance plans to ensure your system continues working well whenever you need it.

It can be a serious problem if your heater goes out in bitter cold temperatures. We can provide HVAC service that is timely, efficient, and effective to resolve the problem as soon as possible. Issues that may indicate your furnace needs repair include:

  • Pilot light that does not stay lit
  • Blower that runs continuously
  • Reduced airflow
  • Heater blowing cold air
  • System cycling frequently from on to off
  • Moldy or unpleasant smell coming from vents

If your old AC unit has stopped working, our technicians can diagnose the problem and tell you if the unit is repairable or not. If your unit has completely failed, we can provide the right equipment and installation services to cool your home with a system that is reliable and far more energy-efficient.

We have more experience and training with Trane air conditioning systems than any other dealer in the area. We also receive discounts for quantity on Trane equipment so you get the best AC unit and installation at a reasonable price.

If your furnace is well past its prime and no longer doing its job, it may be time to consider a replacement. Our technicians can install a high-quality Trane furnace to keep your family warm through the cold winter months. Design Aire has been the number one Trane dealer in the Midwest for more than a decade.

Design Aire has been providing high-quality HVAC products and services in the Midwest since 1904. Our company has been recognized with a number of service awards from customers and peers. We offer special financing with approved credit. Call on us for your HVAC service needs in Florissant, including repair, maintenance, and new installation of cooling and heating systems.

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Financing is provided with approved credit by Wells Fargo Bank, N.A., an Equal Housing Lender.
Design Aire offers special financing with approved credit with this secure application:

Get Wells Fargo Financing ApplicationGet Wells Fargo Financing Application

Customer Testimonials

Seth was our salesperson. He listened to our needs and provided the right product at the right price. The installation team arrived on time and went right to work.They worked with confidence and professionalism.We appreciated the care in protecting our floors and even the choice of how they went up on the roof indicated that they really did care. This company did what they said they would and certainly has our vote of appreciation and gratitude. We will happily recommend Design Aire to anyone.

Ken L.

One of the best companies to work with. My own profession is in a service industry and so I very much appreciate all the positive things about Design Aire.
The install crew arrived right on time and took exactly how much time they said they would to complete the job. The work was done well, the crew cleaned up after themselves, and were very pleasant. Seth in the office was extremely in-tune to our needs and very responsive.
I would highly recommend Design Aire.

Heather H.

Our new HVAC system was installed yesterday and we could not be happier. From quote to completion the process was great! 100% would recommend!

Greg H.

We have used Design Aire for both a new furnace two years ago and a new AC unit this summer. Everything was done very professionally and quickly. I would not hesitate to recommend them to anyone needing any type of HVAC work done.

Sean K.

Design Aire was the best choice from start to finish. Design Aire gave me the best price with the most detailed quote. The service technicians were very friendly and completed the job ahead of time. I highly recommend Design Aire.

John K.

We've used them for our old house and our new house. They are honest, friendly, professional and affordable. We felt lucky to find them.

Maddy R.

I was very impressed with Design Aire. They were timely and did an outstanding job with the installation of my new furnace. They had great communication and went above and beyond. I would highly recommend them to friends and family. Thank you so much Seth and Design Aire for making this an effortless transaction. VERY PLEASED!

Jonny M.

Design Aire sent a salesman to plan the system, and just a couple of days later sent the installers to remove the old system and install the new one. Everything happened when they said it would and the system performs as they said it would. All of the Design Aire staff were courteous, the work was performed efficiently and neatly, and they left the area cleaner than they found it. This is the second unit Design Aire has installed for us, and I have no need to look elsewhere.

Dan L.

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