Wentzville, MO HVAC Contactors

At Design Aire, we serve Wentzville and the surrounding areas, providing HVAC services to help you and your family stay comfortable.

   Contact Design Aire Heating & Cooling: (314) 739-1600

At Design Aire Heating & Cooling, our experienced service technicians are certified and licensed professionals who provide repairs, installations, and replacements for all of your heating and air conditioning needs in Wentzville, Missouri.  

Our HVAC services include:

At Design Aire, we are known for timely service, our focus on integrity rather than the next sale, and our commitment to achieving customer satisfaction. The motto of our company, which was established in 1904, is: “Do a good job at a fair price and treat people right.”

We have earned a reputation as the best HVAC company in the area because of our technical excellence and dedication to our customers. As a small family-owned and operated company, we can give our customers the personal attention they deserve. Our technicians are knowledgeable, trustworthy, transparent, and honest. They receive professional training every year and have an average of 26 years of experience in the industry.

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

A Trusted Wentzville, MO Heating & Cooling Contractor Since 1904

Since 1904, Design Aire has served St. Charles 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 Wentzville. 

AC units tend to break down in the summertime while they are frequently or constantly in use. When that happens, you will want your system repaired as quickly and efficiently as possible. Our experienced technicians can quickly diagnose the problem and perform effective AC repairs to get your system up and running and your home restored to a comfortable temperature.

It is important to diagnose and repair any problems with your furnace before the cold weather arrives. Our technicians can get to the bottom of any issues and help ensure that your furnace is functioning properly before the chill sets in. In addition to repair and installation services, we offer heating maintenance plans for peace of mind. Know that your heater is in good working order and should continue running properly whenever you need it with our furnace repair and maintenance services at your disposal.

Even if you have regular maintenance on your AC unit, there will still come a time when you will need to replace the system. You can rely on our skilled technicians to do the job right, replacing your old air conditioning system and installing a new Trane model. We have more experience and training with Trane air conditioners than any other HVAC company in the area. There’s a reason we have earned our reputation as the #1 Trane Dealer in the Midwest. It’s a reputation we have earned!

It can be important to your family’s comfort and health to replace your old heating system with a new, more efficient furnace. Many people are thrilled with the difference a high-efficiency furnace makes in their home, along with the added benefit of tax credits, rebates, and lower heating bills. The latest generation of systems is 95% efficient and really perform.

If you own a home in or around Wentzville, it is likely that you will need HVAC services eventually. Whether it is to perform routine maintenance, repair a malfunctioning furnace or AC unit, or install a new heating or cooling system, we invite you to contact Design Aire for all your HVAC service needs.

We service the following zip codes in Wentzville: 63348, 63367, 63385.

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.

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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:

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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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