Boiler Replacement & Installation St. Louis

In 1904, Frank “Pappy” Fischer started installing hot water and steam boilers. What started out as a one-man business has grown into what Design Aire is today, an HVAC company with 90 employees. We were founded as a boiler company, and it’s always been a part of our business — that’s why St. Louisans trust our team of experienced and proficient boiler technicians.

Contact the Heating & Cooling Experts of St. Louis & St. Charles, MO: 314-739-1600

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


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New Boiler Installation

Since 1904, Design Aire has been St. Louis’ foremost boiler company. We provide professional, high-quality, and efficient boiler installation services, and we ensure that our work is done quickly to minimize the downtime of your heating system. Proper boiler installation ensures that you and your family will be warm throughout the winter months without running into major system issues and requiring gas boiler maintenance. Call or contact one of Design Aire’s boiler installation experts to request a free estimate!


Gas Boiler Replacement

As a trusted professional boiler installation company, we believe in only installing the best products available on the market. Boilers come in many sizes, brands, types, and efficiencies, thus you have many options when it comes to choosing a new boiler installation or boiler replacement. By working with leading manufacturers, we carry a selection of new and replacement boilers that are designed to meet St. Louis and St. Charles residents’ unique needs. Our boiler system installers can help determine which system is the right one to keep your home comfortable for a very long time.

Boiler Installation Service You Can Count On

We are proud to have customers who have used Design Aire for over 45 years. Our customers are loyal because they know that we have their best interests in mind. With Design Aire’s specialized knowledge and high professional standards, we maintain a reputation in St. Louis for our excellent 100% customer satisfaction. You can always rely on our team to get the job done quickly and efficiently every time.

Contact the Boiler Replacement Experts

We at Design Aire offer exceptional boiler replacement and installation services in St. Louis, ensuring your home remains warm and comfortable. Whether you need a new boiler, boiler repair, or boiler replacement, our expert technicians are experienced with all boiler types, including gas boilers, electric boilers, and high-efficiency condensing boilers. We also specialize in installing modern boilers and system boilers, addressing any boiler issue promptly. Additionally, Design Aire provides comprehensive boiler service, including maintenance for your current boiler as well as furnace repair if needed. We handle all heating system needs, from conventional boilers to steam boilers and hot water boilers, ensuring optimal performance and energy efficiency. Alongside boiler services, we offer air conditioning installation and heat pump services. By choosing Design Aire, you benefit from reliable boiler replacements, expert installation, and superior heating repair services, guaranteeing your home’s comfort and efficiency throughout the year. Contact Us today for exceptional boiler replacement and installation services!

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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.

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

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