Locally Owned · Master HVAC Engineer
St. Louis HVAC 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 — handled by people who actually know the equipment.
Schedule Service
Tell us what’s happening. We call back within 30 minutes during business hours — same-day service when possible.
Why Homeowners Trust Us
A Real St. Louis HVAC Company — Not a National Chain.
A lot of “local-sounding” HVAC companies in St. Louis are owned by out-of-state holding groups. We’re not. Tom Hoffmann owns the business, signs the trucks, and answers for the work.
Years of Experience
Three decades servicing St. Louis homes and businesses. Master engineering experience on every job.
★ on Google
773+ St. Louis homeowners have rated us. Read what they say about showing up on time and fixing it right.
Real People Answering
A real St. Louis dispatcher picks up the phone — nights, weekends, and holidays included.
Owned by Tom
Decisions made in St. Louis — not by a parent company in another time zone. Real owner, real accountability.
What We Do
HVAC Services for St. Louis Homeowners
Repair, replacement, and maintenance for every heating and cooling system — backed by 30+ years of St. Louis experience.
AC Repair
Fast diagnosis and honest repair options — 24/7 emergency service across St. Louis.
Learn More
Furnace Repair
Heating failure is an emergency in St. Louis winters. We dispatch fast — nights, weekends, holidays.
Learn More
HVAC Installation
Full system replacement done right the first time. Authorized Trane dealer with factory-trained installers.
Learn More
Maintenance
Seasonal tune-ups that catch problems before they become breakdowns. Extends equipment life.
Learn MoreAC out tonight? 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.
No Cool Air
AC running but warm air — call us first.
No Heat
Furnace cycling but cold — dispatched fast.
Strange Noises
Banging, clicking, screeching — diagnose now.
Burning Smell
Shut it off and call us immediately.
Water Leaks
Pooling near the unit — quick fix possible.
Won’t Turn On
Dead system — often a simple part.
Thermostat Issues
Blank screen or wrong temps — we know it.
Energy Bills Spiking
System working harder than it should — fixable.
How It Works
Three Steps to Comfortable.
No call centers, no scripted upsells, no surprise pricing. Just trained St. Louis technicians showing up and fixing what’s broken.
Call or Schedule
Reach a real St. Louis dispatcher in under a minute. Tell us what’s wrong; we’ll book a slot — same-day when we can.
~ 2 minutesDiagnose & Estimate
A trained tech (or Tom himself) gives you an honest read on what’s wrong, why, and what it’ll cost. Written before any work.
~ 30 minutesFix It Right
We do the work in front of you. No surprise charges, no upsells. If something else turns up, you approve before we touch it.
Same visit, when possibleWhat St. Louis Homeowners Say
4.9 ★ on Google — Hundreds of Reviews.
Serving the Greater St. Louis Metro.
From our home base in Des Peres, we dispatch across St. Louis City, St. Louis County, and St. Charles County. Same-day service when possible, and a real local dispatcher on the phone 24/7.
Don’t see your area? We likely still cover it. Call (314) 471-7625 and ask.
Common Questions
Frequently Asked Questions
How quickly can you respond to an emergency?
We answer emergency calls 24 hours a day, 7 days a week — including holidays. For urgent heating or cooling failures, call (314) 471-7625 and we’ll dispatch a technician as quickly as possible.
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’s included in a maintenance tune-up?
A standard tune-up includes inspection of all electrical connections, refrigerant levels, coil cleaning, thermostat calibration, filter check, and a full system performance test. We’ll flag anything that needs attention before it becomes a breakdown.
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 do you serve?
We serve the greater St. Louis metro area including Chesterfield, Ballwin, Kirkwood, Webster Groves, Creve Coeur, Manchester, Maryland Heights, Des Peres, and surrounding communities.
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 — we’ll diagnose it accurately on the first visit.
Why choose Thomas Hoffmann over a national chain?
Many national HVAC brands operating in St. Louis are franchise operations — not true local companies. Thomas Hoffmann is locally owned, and Thomas himself remains directly involved in every job. You get a Master HVAC Engineer’s expertise, not a call center.
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? 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.