Locally Owned · Serving St. Ann & North County

HVAC Company St. Ann, MO

St. Ann was built as a neighborhood of sturdy, sensible homes, and they deserve heating and cooling that’s just as sensible: fixed right, priced fairly, and running efficiently. Thomas Hoffmann, Master HVAC Engineer with 30+ years in St. Louis, leads the local team that keeps these houses comfortable without wasting a dollar of your energy budget.

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

Get Service in St. Ann

A short note about the problem gets things moving. We call back within 30 minutes during business hours and book same-day whenever an opening allows.

St. Ann, MO homeowners reviewing energy bills, energy efficient HVAC from Thomas Hoffmann Air Conditioning & Heating

Comfort Shouldn’t Cost a Fortune

A Climbing Utility Bill Is the System Trying to Tell You Something.

St. Ann’s homes are compact and practical, which means they should be affordable to heat and cool. When the bill keeps creeping up anyway, the cause is usually mechanical: a system losing efficiency with age, ductwork leaking into places you don’t live, or equipment that was never sized right to begin with. We diagnose the real reason before recommending anything. Sometimes a tune-up or a repair brings costs back in line; when the numbers genuinely favor a high-efficiency replacement, we show you that math in writing, with a free estimate and no pressure.

Local

Just Down the Road

A St. Louis company with its own employees, not subcontractors dispatched from a corporate call center.

30+

Years of Diagnosis

Master HVAC engineering experience that finds the actual problem instead of swapping parts and hoping.

Free

Replacement Estimates

Free estimates on system replacements, honest advice on repairs, and no manufactured upsells either way.

24/7

Phones Answered

A live dispatcher takes the call any hour of any day, so an emergency never lands in a voicemail box.

Urgent? Call Now.

House won’t cool down? Furnace blowing cold air?

Call any hour and a real dispatcher answers, works out how serious it is, and gets a technician moving toward St. Ann. One thing comes before any of that: if you smell gas or a carbon monoxide alarm goes off, get everyone out of the house first and make the call from outside.

24/7 Emergency HVAC Service in St. Ann Live answer, honest triage, fast dispatch.
Call (314) 471-7625

Neighbors First

4.9 ★ on Google Across the St. Louis Metro.

Kathleen D.
1 day ago
Ryan was very professional, knowledgeable, and thorough. I was able to get an appointment the same day during a biter, snowy day.
Response from the owner:We are so glad to hear you had a pleasant experience, Kathleen!
Matthew K.
1 day ago
Great work! They cleaned up my ducts and made it more efficient without trying to upsell me on random things. Will use them again!
Chris B.
2 days ago
Nick was professional, very knowledgeable, courteous and efficient. Nice people in the office too.
James H.
3 days ago
Came out immediately after a time slot opened and fixed the AC issue.
Response from the owner:Thank you, James, for your kind words! We're glad we could address your AC issue promptly.
Mark T.
3 days ago
This company is the best! Had another service our HVAC and had nothing but issues. Zach from Hoffman is courteous and efficient. Highly recommend this company
Response from the owner:Thank you, Mark! We're glad to hear you had a great experience with Zach and appreciate your recommendation. Your support means a lot to us!
Tom S.
4 days ago
They were good and did an exce llent job. Thank you
Response from the owner:Thank you for the 5-star rating, Tom!
Darrell B.
7 days ago
Came next day after call. May the repair quickly
Response from the owner:Thank you, Darrell! We're glad to hear that we could assist you promptly and efficiently with your repair. Your satisfaction means a lot to us!
Teresa F.
1 week ago
Ryan arrived 20 minutes early. A great start to our day as we had a plumber coming today as well. They did overlap, but Ryan was thorough, efficient and gave us a clean bill of health on our furnace in about 45 minutes. WE LOVE THOMAS HOFFMANN AIR CONDITIONING AND HEATING. Oh and get the combo service plan for both your furnace and AC annual service. Very reasonable.
Response from the owner:Thank you for sharing your positive experience with our service technician! We appreciate your kind words and are glad to hear that you were satisfied with the service provided.
Brandon B.
2 weeks ago
Zach was incredibly friendly, professional, and easy to work with. They provided high-quality work and clearly take pride in what they do. The entire experience was smooth and pleasant from start to finish. It’s refreshing to work with people who are not only skilled at their job but also genuinely kind and helpful. I highly recommend them!
Response from the owner:Thank you, Brandon! We're glad to hear you had a smooth and pleasant experience with Zach. Your kind words about their professionalism and kindness mean a lot to us. We appreciate your recommendation!
john J.
2 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.
Brian B.
2 weeks ago
Tech was on time and stayed till they were finished. He was very thorough listen to our concerns and had open and honest suggestions all while having casual conversation and making me and my wife feel comfortable.
Response from the owner:Thank you for recognizing our team's punctuality and dedication!
Premchand T.
2 weeks ago
Excellent service
Response from the owner:Thank you, Premchand, for your kind words about our service! We appreciate your feedback and are glad you had a great experience.
Dale C.
2 weeks ago
I love dealing with this company. Our tech, Zach, is professional and friendly. I love the level of communication from Thomas Hoffman: from the text/email reminders to schedule an appointment to the update of the appointment itself. Highly recommend this company!!
Response from the owner:Thank you, Dale, for your wonderful feedback! We're glad Zach could assist you effectively, and we appreciate your kind words about our communication and service.
Thomas E.
2 weeks ago
Very fast response and professional service.
Response from the owner:Thank you, Thomas! We appreciate your kind words about our fast response and professional service.
Kay H.
3 weeks ago
Zach came around 9:00 the early part of my window. It was my annual checkup and he said everything looked good. I will be moving out of state soon but appreciate your past service.
Response from the owner:Thank you so much for the great review, Kay. We truly appreciate your business!
William H.
3 weeks 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.
Thomas E.
3 weeks ago
They installed our system and came out to check on a concern promptly and didn’t charge us.
Response from the owner:Thank you, Thomas! We're glad to hear that our team addressed your concern quickly and without any charges. Your satisfaction means a lot to us!
Pat Keith T.
3 weeks ago
Zachary is great! We purchase Hoffmans maintenance plan - they come when needed
Response from the owner:Thank you, Pat, for your kind words about Giovanni; we appreciate your feedback and are glad to hear that he made a positive impression.
Beth R.
3 weeks ago
Competence and knowledge have been my experience.
Response from the owner:Thank you, Beth, for sharing your experience; it means a lot to us!
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.
Frank P.
3 weeks ago
From the phone to the completion of the job everyone is so polite and informative. I had Giovani as our representative and he was very informative and professional, and knew exactly what the problem was. Thanks so much.
Response from the owner:Thank you for the kind review, Frank! We appreciate you and your business.
Adi S.
4 weeks ago
Our AC condenser and coil were swapped out. The company did a very good job with staff that were most professional. Would happily recommend their company and keep them for all my annual maintenance work. I stress their staff is very knowledgeable and professional.
Response from the owner:Thank you, Adi! We're glad to hear you had a positive experience with our team and appreciate your recommendation. Your kind words about our knowledgeable and professional staff mean a lot to us.
Chris S.
1 month ago
great people
Response from the owner:Thank you, Chris! We appreciate your kind words about our team.
Christine M.
1 month ago
Needed help after hours and they called me back right away! Super helpful and were able to fit me in when I was in a bind during the STL heat wave.
Response from the owner:Thank you, Christine! We're glad we could assist you promptly during the heat wave. Your satisfaction is our priority, and we appreciate your kind words!
ruter
1 month ago
Exceptional Service from Start to Finish!I recently hired Thomas Hoffmann Air Conditioning & Heating to replace my complete HVAC system, and I could not be happier with the experience. The installation crew—Zachary and Giovani—was absolutely top-notch. They were professional, courteous, and incredibly meticulous with their work
Response from the owner:Thank you, Ruter! We're so glad to hear you had an exceptional experience with our team, and we'll definitely pass on your kind words to Zachary and Giovani. Your satisfaction means a lot to us!

Ask Away

St. Ann HVAC Questions, Answered Plainly

Do you offer emergency HVAC service in St. Ann?

Yes, 24/7, holidays and weekends included. Call (314) 471-7625 and a live dispatcher will sort out the urgency and get a technician assigned as quickly as the schedule allows.

Why does my energy bill keep going up?

Common mechanical causes include a system losing efficiency with age, dirty coils or filters, leaking ductwork, low refrigerant, or equipment that was oversized or undersized from the start. A proper diagnosis identifies which one you’re dealing with, because the fix is different for each.

Will a new system lower my utility bills?

It often can, especially when replacing equipment that’s 15+ years old with a properly sized high-efficiency system. Actual savings depend on the home, the old equipment, and your usage, so we walk through realistic numbers for your situation rather than promising a figure.

Do you charge for replacement estimates?

No. Estimates on system replacements are free, in writing, and explained line by line. If a repair makes more sense than replacing, we’ll tell you that too.

Can you add central air to a house that’s never had it?

Usually, yes. Many older St. Ann homes have been running window units for decades, and options range from conventional ducted systems to ductless mini-splits, depending on the house. We assess the structure first and lay out what fits it and the budget.

Which areas near St. Ann do you serve?

Bridgeton, St. John, Overland, Breckenridge Hills, Woodson Terrace, Edmundson, Maryland Heights, and the rest of the St. Louis metro.

Sensible Comfort for the St. Ann House. That’s the Whole Job.

One locally owned company, 30+ years of St. Louis HVAC experience, free replacement estimates, and a phone answered at every hour.