Locally Owned · Serving Arnold & Jefferson County

Air Conditioning Arnold, MO Fixed Right, No Runaround.

Crossing the Meramec doesn’t slow us down. Thomas Hoffmann, a Master HVAC Engineer with 30+ years in the St. Louis area, sends the same trained technicians to Arnold that the rest of the metro gets: honest diagnosis, a written price, and the repair, replacement, or tune-up done properly.

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

Line Up Service in Arnold

Tell us what the system is doing (or not doing). We call back within 30 minutes during business hours and get you on the schedule, same-day when we can.

HVAC technician servicing equipment for an Arnold, MO home, Thomas Hoffmann Air Conditioning & Heating

Jefferson County Counts Too

The River Isn’t a Service Boundary.

Some metro HVAC outfits quietly stop at the county line. We don’t. Arnold, from the neighborhoods off Highway 141 and Jeffco Boulevard to the streets near the Meramec, gets the same crew, the same pricing, and the same standards as everywhere else we work. And because Tom Hoffmann owns the company himself, there’s no corporate office deciding your town isn’t worth the drive.

Local

Owner on the Hook

Tom Hoffmann’s name is on the company because he stands behind the work. Simple as that.

30+

Years of Fixes

Three decades of St. Louis-area furnaces and ACs means very few problems we haven’t already solved.

Upfront

No Surprise Invoices

The number you approve is the number you pay. Anything extra gets your sign-off first.

24/7

Always Reachable

Emergencies don’t keep office hours. A live St. Louis dispatcher answers every call, all year.

Urgent? Call Now.

No heat or no AC in Arnold? Get a real person on the line.

Describe what’s happening and we’ll dispatch a technician as fast as the board allows. No phone tree, no “your call is important to us,” no waiting until Monday.

24/7 Emergency HVAC Service in Arnold Jefferson County emergencies get answered like every other call: immediately.
Call (314) 471-7625

Proof Over Promises

4.9 ★ on Google. Read Why.

Hank K.
2 days 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!
jane G.
3 days 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!
Tom C.
4 days 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.
1 week 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.
1 week 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.
2 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.
3 weeks 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.
3 weeks 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.
3 weeks 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
3 weeks 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.
3 weeks 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.
4 weeks 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.
4 weeks 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.
4 weeks 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.
4 weeks 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.
1 month 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!
Susan H.
1 month ago
Very professional and polite. Did a great job.
Response from the owner:Thank you, Susan! We appreciate your kind words and are glad to hear you had a great experience with our team.
Ted E.
1 month ago
Nick came by, identified the problem quickly and had it fixed. Great service!
Response from the owner:Thank you, Ted! We're glad to hear that Nick provided you with quick and effective service. Your feedback is greatly appreciated!
William H.
1 month ago
Zach was great. He helped me better understand my systems and their operating systems.
Response from the owner:Thank you for the 5-star review, William. We are happy to hear Zach took good care of you.
Kaliyah
1 month ago
Quality service, fast, very professional!
Response from the owner:Thank you, Kaliyah! We're glad you experienced our quality service and professionalism. Your feedback means a lot to us!
Jacob K.
1 month ago
The technician that came to my house was awesome. He explained the issue and was 100% honest with me. He worked with my wishes and did a great job! Thank you
Response from the owner:Thank you, Jacob! We're glad to hear that the technician provided excellent service and was honest with you. Your feedback is much appreciated!
Lucas S.
1 month ago
Quick response, professional service. Made it out made the repair even on a holiday.
Response from the owner:Thank you, Lucas! We're glad to hear you appreciated the quick response and professional service, especially during the holiday. Your satisfaction means a lot to us!
Beth G.
1 month ago
Zach came out quickly and fixed our A/C on the 4th. He was pleasant and super efficient! A/C fixed and he was out of here, made our day for sure! Plus he likes dogs!
Response from the owner:Thank you, Beth! We're glad to hear that Zach was able to fix your A/C quickly and efficiently, and it's great to know he made your day better. We appreciate your kind words!
Rich J.
1 month ago
Excellent customer service and Repair work
Response from the owner:Thank you, Rich! We're glad to hear you had an excellent experience with our customer service and repair work. Your feedback means a lot to us!
Jennifer H.
2 months ago
Nick was fantastic. He was a great communicator, efficient and educated me and let me take the drivers seat to decision making without feeling pushed. I will for sure recommend friends and family. Service like this doesn’t come around much these days.
Response from the owner:Thank you, Jennifer! We're glad to hear that Nick provided you with excellent service and made you feel empowered during the process. We appreciate your recommendations and look forward to serving you and your friends and family in the future!

Quick Answers

Arnold HVAC Questions

Do you serve Arnold and the rest of Jefferson County?

Yes. Arnold is part of our regular service area, along with Imperial, Barnhart, and nearby Jefferson County communities. Crossing the Meramec doesn’t change the response time promise or the pricing.

Can I get emergency service in Arnold at night or on weekends?

Yes, 24/7. Call (314) 471-7625 and a live dispatcher answers, takes the details, and gets a technician assigned, holidays included.

Do you repair every furnace and AC brand?

All the major names: Trane, Carrier, Lennox, Rheem, Goodman, and most others. When it’s time for new equipment, we install Trane systems as an authorized dealer with factory support behind the work.

How do I know whether to repair or replace?

We’ll give you the honest math: the repair cost, the system’s age, and what a new unit would run. A common benchmark is that when a repair passes half the cost of replacement on a 10+ year old system, replacement usually wins. Either way, the decision is yours.

Which other communities near Arnold do you serve?

Fenton, Imperial, Barnhart, Oakville, Mehlville, and the broader St. Louis metro on both sides of the river.

How fast is a system replacement?

Most swaps are done in a single day. You get the schedule up front, a clean work area throughout, and a running system before the truck pulls away.

Arnold, One Call Handles It.

A locally owned company with 30+ years of St. Louis-area HVAC experience, straight pricing, and a dispatcher who picks up at any hour. Jefferson County included.