Locally Owned · Serving St. Louis, MO
Air Conditioning St. Louis, MO Repaired, Replaced, 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 homes and businesses across the city and county, handled by people who actually know the equipment.
Schedule Service in St. Louis
Tell us what’s happening. We call back within 30 minutes during business hours, with same-day service when possible.
What We Do
Air Conditioning & Heating Services in St. Louis
Repair, replacement, and maintenance for every heating and cooling system, from South City to West County, backed by 30+ years of St. Louis experience.
AC Repair
Fast diagnosis and honest repair options, with 24/7 emergency service across St. Louis.
Learn More
Furnace Repair
Heating failure is an emergency in a Missouri winter. We dispatch fast, nights, weekends, and holidays.
Learn More
HVAC Installation
Full system replacement handled by factory-trained installers. Authorized Trane dealer.
Learn More
Maintenance
Seasonal tune-ups that catch problems before they become breakdowns and help extend equipment life.
Learn More
Why St. Louis Homeowners Trust Us
We Know St. Louis Homes, South City Brick to West County Builds.
Whether you’re in South City, the Central West End, or out in West County, St. Louis housing runs from century-old brick to brand-new construction, and each brings its own HVAC challenges. Our technicians handle all of it. And unlike the “local-sounding” companies owned by out-of-state holding groups, Tom Hoffmann owns this business, signs the trucks, and answers for the work.
Owned by Tom
Decisions made in St. Louis, not by a parent company in another time zone. Real owner, real accountability.
Years of Experience
Three decades servicing St. Louis homes and businesses. Master engineering experience on every job.
Honest Pricing
A written estimate before any work begins. Practical options, not sales pressure or scripted upsells.
Real People Answering
A real St. Louis dispatcher picks up the phone, nights, weekends, and holidays included.
AC out tonight in St. Louis? Furnace down on a cold morning?
A real person answers the phone, 24 hours a day, 7 days a week. Tell us what’s wrong and we’ll dispatch a technician as fast as humanly possible. No call centers, no overseas dispatchers, no scripts.
What Your Neighbors Are Saying
4.9 ★ on Google, Hundreds of Reviews.
Common Questions
St. Louis HVAC Questions, Answered
Do you offer emergency HVAC service in St. Louis?
Yes. We answer emergency calls 24 hours a day, 7 days a week, including holidays. For urgent heating or cooling failures anywhere in the St. Louis area, call (314) 471-7625 and we’ll dispatch a technician as quickly as possible.
Can you work on St. Louis’s older brick homes?
Yes. Much of the city’s housing is brick construction that’s a century old or more, which often means older ductwork, tight mechanical spaces, and systems that need careful sizing. We work on these homes regularly, alongside newer construction in the county.
Do you service all HVAC brands?
Yes. We repair and maintain all major brands including Trane, Carrier, Lennox, Rheem, Goodman, and more. As an authorized Trane dealer, we also offer new Trane installations with full manufacturer support.
What parts of St. Louis do you serve?
We serve the City of St. Louis, from South City to the Central West End, plus St. Louis County communities including Des Peres, Kirkwood, Webster Groves, Clayton, Chesterfield, Ballwin, Creve Coeur, Manchester, Maryland Heights, and surrounding areas.
Why is my AC blowing warm air?
The most common causes are low refrigerant, a dirty air filter, a tripped breaker, or a failed compressor. Some are simple fixes; others need a technician. If your AC is running but not cooling, call us and we’ll diagnose it accurately on the first visit.
How long does a furnace or AC installation take?
Most residential installations are completed in a single day. We’ll give you a clear timeframe before we start and keep the work area clean throughout. Our goal is to have your system running before we leave.
Ready to Schedule Service in St. Louis? We Answer 24/7.
St. Louis homeowners have trusted Thomas Hoffmann for 30+ years. Local ownership means you deal with real people, every time you call.