Serving Clayton, MO · Locally Owned

Clayton Air Conditioning & Heating Repair, Replace, Done.

Master HVAC Engineer Thomas Hoffmann leads a local team backed by 30+ years of St. Louis experience. AC repair, furnace repair, full system replacement, and maintenance for Clayton homes and businesses, handled by people who actually know the equipment.

4.9 Google Reviews
30+ yrs experience
24/7 phones answered

Schedule Service in Clayton

Tell us what’s happening. We call back within 30 minutes during business hours, with same-day service when possible.

HVAC technicians at work — Thomas Hoffmann Air Conditioning & Heating, serving Clayton, MO

Why Clayton Homeowners Trust Us

A Real Local HVAC Company Serving Clayton — Not a National Chain.

A lot of “local-sounding” HVAC companies serving Clayton are owned by out-of-state holding groups. We’re not. Tom Hoffmann owns the business, signs the trucks, and answers for the work. Licensed, insured, NATE-certified technicians, fully stocked trucks, clear upfront pricing with no hidden fees, and flexible financing options.

30+

Years of Experience

Three decades servicing St. Louis, from Clayton’s historic brick homes to condos and commercial spaces.

4.9

★ on Google

773+ St. Louis homeowners have rated us. Read what your neighbors say about showing up on time and fixing it right.

24/7

Real People Answering

A real St. Louis dispatcher picks up the phone for Clayton emergencies, nights, weekends, and holidays included.

Local

Owned by Tom

Decisions made in St. Louis, not by a parent company in another time zone. Real owner, real accountability.

Our Service Area

Proudly Serving the Clayton Community

Clayton homes and businesses come in a wide range of styles and layouts, from historic brick residences in established neighborhoods to condos and office spaces in the downtown Clayton business district. Our team is experienced with different system types and configurations, and we take the time to understand your specific setup before recommending anything. We believe in repairing when possible and only recommending replacement when it’s the most cost-effective option for you.

We serve homes and businesses throughout zip code 63105 and nearby communities including University City, Ladue, and Richmond Heights. Whatever the season brings, a real St. Louis dispatcher answers the phone at (314) 471-7625, 24 hours a day.

What Your Clayton Neighbors Say

4.9 ★ on Google — Hundreds of Reviews.

Rich C.
17 hours ago
Very prompt response and very professional and conscientious repair service. Nick did a great job and is a very nice guy. I apparently have an intermittent problem that did not occur today. Your technician was excellent and system is now working, so I will call if issue recurs. You have terrific associatyes.
Response from the owner:Thank you, Rich! We're glad to hear you had a great experience with our repair service. Nick will be pleased to know his efforts made a positive impression. We appreciate your feedback!
Lori B.
1 day ago
I can’t say enough wonderful things about Thomas Hoffmann Air Conditioning and Heating! Nick came promptly, which was such a relief, and from the very beginning, he was personable, professional, and incredibly honest. After dealing with other companies, Nick’s honesty really stood out. He took the time to explain everything clearly, answer my questions, and make sure I understood what was going on—without any pressure or unnecessary recommendations. It was refreshing to feel like I was dealing with someone who genuinely cared about doing the right thing for the customer. Nick’s professionalism, knowledge, and customer service were truly top-notch. I wouldn’t hesitate to recommend Thomas Hoffmann Air Conditioning and Heating to anyone looking for a heating and cooling company you can actually trust!
Response from the owner:Thank you for the 5-star rating, Lori!
John P.
2 days ago
They did great work on a tight timeline. They saved our business that day! Very professional and smart. I will use them every time!
Response from the owner:Thank you, John! We appreciate your kind words and are glad we could help your business on such a tight timeline. Looking forward to working with you again!
Morgan T.
3 days ago
The service was excellent! When we arrived home after 8 pm, seen our unit was not working and it was almost 85 degrees in our home my husband began calling all of the companies that said they were 24 hrs. Thomas Hoffman heating and cooling was the only company that honored the statement. Nick was at our home in a very timely manor and was also able to fix our unit quickly! I would highly recommend to anyone needing any hvac services!
Response from the owner:Thank you, Morgan! We're glad to hear that you had an excellent experience with our service. It's great to know that Nick was able to assist you promptly and effectively. We appreciate your recommendation and look forward to helping you again in the future!
Excellent service and a job very well done. Highly recommended!
Response from the owner:Neil, thank you so much for the great review. We appreciate your continued support and business!
Timothy L.
4 days ago
Tom was amazing and fast , came out for a 24 hour service call and did quick work to keep us in our home during a summer heatwave.
Response from the owner:Thank you, Tim! We're glad to hear that Tom provided amazing and quick service. Your comfort is important to us!
Margaret F.
5 days ago
Excellent service, on time, professional!
Response from the owner:Thank you, Margaret! We appreciate your kind words and will make sure to pass along your praise to Nick for his excellent service.
lisa D.
2 weeks ago
Thomas Hoffman HVAC provides excellent service. The staff members are very nice, respectful and knowledgeable. I always feel comfortable with the advice I have been and the fees for repairs. Whether we see one of the companies employees or Thomas himself we have always had a good experience and highly recommend them. I am thankful to have found a trustworthy company to count on for my future needs.
Response from the owner:Thank you for the 5-star review, Lisa. We appreciate the support!
Michael M.
2 weeks ago
Everything went very well , excellent service, our AC should be good now .
Response from the owner:We are happy to hear it, Mike! Thanks for the 5-star review.
jane G.
2 weeks ago
Nick did an outstanding job on checking the attic and replacing damaged insulation. He showed me where the leak was coming in from the roof. Excellent overall job
Response from the owner:Thank you, Jane! We're glad to hear that Nick provided exceptional service by checking the attic and addressing the insulation issue. Your satisfaction is important to us!
Hank K.
2 weeks ago
Fast, friendly, professional service.
Response from the owner:Thank you, Hank, for your wonderful feedback; we're glad you enjoyed the fast, friendly, and professional service, and we'll be sure to keep up the great work!
Tom C.
2 weeks ago
Nick is very professional and have our AC issue resolved within an hour.
Response from the owner:Tom, we are so happy to hear you enjoyed working with Nick. We appreciate the great review and your business!
KATIE DOOLEY C.
3 weeks ago
I was distraught to find out our 20 year old HVAC needed to be replaced. Hoffman was beyond empathetic and took care of me within 24 hours during the heat wave. They were on time and very efficient. I have to have trust worthy people work on our house and be in our cocoon, therefore Hoffman has always been our contractor and always will be! They have become family;) I refer all of my clients to them!!!
Response from the owner:Thank you, Katie! We're so glad to hear that you felt supported during a tough time. Your trust means the world to us, and it's wonderful to know that we’ve become part of your family. We appreciate your referrals and look forward to continuing to serve you and your clients!
Becky W.
3 weeks ago
I called on a Monday morning as air conditioning was blowing warm air. They were able to come to my house very early afternoon and fixed the problem. Would highly recommend and will use them again.
Response from the owner:Becky thank you so much for your great review. We appreciate your business and your kind words.
Spencer W.
3 weeks ago
Thomas Hoffmann provided outstanding service from start to finish. The technician was professional, knowledgeable, and took the time to explain everything clearly. They arrived on time(early), diagnosed the issue quickly, and had my AC running perfectly in no time. I really appreciated their honest recommendations and fair pricing—no pressure or unnecessary upselling. It's refreshing to work with a company that truly values customer service. I highly recommend Thomas Hoffmann to anyone looking for reliable, high-quality HVAC service.
Response from the owner:Spencer, thank you so much for the 5-star review. We really appreciate your kind words, & your business.
john J.
1 month ago
Got a checkup on the hottest day of the year and everything is working fine. Great service.
Response from the owner:John, thank you so much for the nice review! We are so happy to hear you had a positive experience.
Brad G.
1 month ago
Outstanding...Giovani was superb..need him as a regular for our regular maintenance!
Response from the owner:Thank you, Brad! We're glad to hear you had a great experience with Giovani. We appreciate your feedback and will certainly keep your request in mind for your regular maintenance.
Jennifer H.
1 month ago
Service Technician was very nice and friendly.
Response from the owner:Thank you so much for the amazing review, Jennifer. We truly appreciate it!
goostorm
1 month ago
Quick service, solved the problem. Thanks!
Response from the owner:Thank you! We're glad to hear that our quick service helped solve your problem. We appreciate your feedback!
James H.
1 month ago
The repairman arrived at around 8:30 AM and spent about three hours working on the unit, which I purchased from them less than a year ago. At the end of three hours, he informed me that my unit was not working because I had the wrong filter in it. I raised a question about why it took three hours to replace the filter. I can't really explain his response because it was in technical jargon that I did not understand well enough to know what other questions to ask. The unit has a two year parts and labor warranty and a 10 year manufacturer parts warranty. unfortunately, I did not get the benefits of those warranties because, as the technician put it, the onus for using a less effective filter, rests with the customers. Then, he went on to describe to me the best filter choice, something the average customer would not automatically know. My greatest disappointment was being denied the benefits of my warranties. On the plus side, once management became aware of my dissatisfaction, they reached out to me with an apology for any role they played in my dissatisfaction and, as a show of their good intentions, they shredded my check, subsequently, not charging me for their service. This response showed a genuine commitment to quality and efficient service, as well as a commitment to customer satisfaction. Consequently, I highly recommend Hoffmann Air Conditioning services.
Response from the owner:Thank you, James, for your 5-star rating; we truly appreciate your support!
Tiffany B.
1 month ago
My experience was very pleasant. Nick was great got my problem taken care of. He explained how to use my new equipment . Thank you for a true 24 hr service.
Response from the owner:Tiffany, thank you for the 5-star review. We appreciate you and your business!
Kathleen J.
1 month ago
Very prompt, conscientious and personable. Work well done.
Response from the owner:Thank you, Kathleen! We appreciate your kind words about our team's promptness and attention to detail. Your feedback means a lot to us!
Lisa O.
1 month ago
The tech was great. He showed up on time, was very polite, answered all my questions and got the job done. The service was also very reasonably priced.
Response from the owner:Thank you, Lisa! We're glad to hear you had a great experience with our technician. Your feedback about punctuality, politeness, and value is much appreciated!
Bill G.
1 month ago
Technician, Giovanni Leone, did such a great job in fixing our AC on a Saturday morning when the Temp is supposed to get up to 100 degrees, later today! I felt like we were in excellent hands and he explained everything he was going to do and then explained in even greater detail once everything was done! I told him if he ever wants to go into sales, he should! He has great personable skills! We have used Thomas Hoffmann before for our heating and cooling needs and they are always professional and trustworthy! My only mistake was not having them to come out to check our AC in the past 3 years!
Response from the owner:Thank you, Bill! We're so glad to hear about your positive experience with Giovanni. It's great to know that you felt well taken care of and appreciated his thorough explanations. We truly value your trust in us for your heating and cooling needs, and we look forward to serving you again in the future!
Robinette H.
2 months ago
He came early and identified the problem ordered the part and put it in. He was professional, neat in appearance. I would say an asset to your company.
Response from the owner:Thank you, Robinette! We appreciate your kind words about the professionalism and neatness you experienced. It's great to hear that our team member made a positive impact. Your feedback means a lot to us!

Common Questions in Clayton

Frequently Asked Questions

Do you offer emergency HVAC repair in Clayton?

Yes. We answer emergency calls 24 hours a day, 7 days a week, including holidays. For urgent heating or cooling failures in Clayton, call (314) 471-7625 and we’ll dispatch a technician as quickly as possible.

How fast can you get to my home in Clayton?

Clayton sits right in the middle of our core service area, so response times are often fast. Same-day service is available when possible, and our trucks are fully stocked so most repairs can be completed on the first visit.

Do you service condos and commercial buildings in Clayton?

Yes. Along with single-family homes, we handle condos and light commercial HVAC work throughout Clayton, including the downtown business district. We repair and maintain all major brands including Trane, Carrier, Lennox, Rheem, and Goodman, and as an authorized Trane dealer we also handle full system replacements.

Should I repair or replace my system?

We’ll give you an honest answer based on the age of your system, the cost of the repair, and its efficiency. A general rule: if the repair costs more than half the price of a new system and the unit is over 10 years old, replacement usually makes more financial sense.

What areas near Clayton do you serve?

We serve all of zip code 63105 plus nearby communities including University City, Ladue, and Richmond Heights, along with the greater St. Louis metro area.

Do you offer financing?

Yes, flexible financing options are available for system replacements and larger repairs. Ask when you call and we’ll walk you through what fits your situation.

Need HVAC Service in Clayton? We Answer 24/7.

Clayton homeowners get the same thing every Thomas Hoffmann customer gets: a Master HVAC Engineer’s standards, local ownership, and real people on the phone, every time you call.