Licensed HVAC technicians serving St. Louis homes and businesses. AC repair, furnace service, maintenance plans, and full system installs — done right, on time, at a fair price.
We're a St. Louis based heating and cooling company. No subcontractors, no runaround. The same crew that answers the phone shows up at your door.
We give you a straight price before we start and stand behind every job we do.
Licensed & insured — you're always protected
Same-day service for most repairs
Upfront pricing — no surprise charges
Residential & commercial systems
What We Do
FULL SERVICE HVAC
From a quick repair to a full system install — residential and commercial, we handle it all.
Most Requested
AC REPAIR & INSTALLATION
Fast diagnosis and repair for any AC issue. Full system replacements when it's time for an upgrade. We'll always give you the honest answer.
Winter Ready
FURNACE SERVICE
Repairs, tune-ups, and full furnace installs. Stay warm without worrying about a breakdown.
Smart Home
THERMOSTAT INSTALLS
Smart thermostat setup and wiring. Control your home's comfort from your phone.
Maintenance Plans
TUNE-UPS & MAINTENANCE
Seasonal tune-ups and filter changes that catch small problems before they become expensive ones.
Services
EVERYTHING YOUR HOME OR BUSINESS NEEDS
Full heating and cooling service for St. Louis homes and businesses, residential and commercial.
01 — Cooling
AIR CONDITIONING REPAIR & INSTALL
From a quick recharge to a full system replacement, we diagnose the real problem and give you options — never just a sales pitch.
02 — Heating
FURNACE REPAIR & INSTALL
Gas and electric furnace service. Same-day repairs in most cases.
03 — Smart Controls
THERMOSTAT INSTALLATION
Smart and programmable thermostat installs. We handle the wiring and walk you through the setup.
04 — Maintenance
SEASONAL MAINTENANCE PLANS
Spring AC tune-ups and fall furnace checks. Catch small issues before they become expensive breakdowns.
05 — Commercial
COMMERCIAL HVAC SERVICE
Rooftop units, packaged systems, and commercial maintenance contracts. We keep your business comfortable and your equipment running.
Real Results
SEE THE DIFFERENCE
Drag the handle to compare. A real replacement, right here in St. Louis.
Before
After
AC System Replacement — Old, rusted 15-year unit replaced with a new high-efficiency Carrier system.
★★★★★
Our AC went out on the hottest day of the year. They had someone out same day and fixed it within the hour. Fair price, no upsell pressure. Couldn't ask for more.
Karen B.
Oakville, MO · Google Review
★★★★★
Replaced our 20 year old furnace right before the first cold snap. Clean install, explained everything, and the new unit is so much quieter. Highly recommend.
Mike D.
Fenton, MO · Google Review
★★★★★
We use them for our office building's rooftop units. Always responsive, always professional, and they keep us running without surprises. Solid commercial partner.
Dave R., Facilities Mgr
Arnold, MO · Google Review
About Us
BUILT ON TRUST, NOT TRICKS.
Comfort Zone HVAC has been serving St. Louis homes and businesses for over 15 years. We believe in honest pricing, real expertise, and showing up when we say we will.
Our Story
FAMILY OWNED. LOCALLY OPERATED.
We started this company because too many homeowners were getting talked into systems they didn't need, or stuck waiting days for a technician during a heat wave.
We do it differently. Honest diagnostics, fair pricing, and real urgency when your comfort is on the line.
Fully licensed & insured HVAC contractor
Factory trained technicians
Residential & commercial experience
Honest pricing, every time
Meet The Crew
THE TEAM BEHIND THE WORK
Lead Technician
15+ Years Experience
Service Technician
Residential & Commercial Specialist
Where We Work
WE SERVE ALL OF ST. LOUIS
Based in South St. Louis County, we serve the entire metro area. Not sure if we cover your area? Just call — we'll tell you straight.
Oakville
South County
Fenton
Arnold
Sunset Hills
Kirkwood
Webster Groves
Mehlville
Imperial
Festus
St. Louis City
All of Metro
Our Work
JOBS WE'RE PROUD OF
Real installs, real repairs, real St. Louis homes and businesses.
Before & After
DRAG TO COMPARE
Before
After
Full System Replacement — Oakville, MO · Old rusted unit swapped for a new high-efficiency system.
Get In Touch
LET'S TALK ABOUT YOUR HOME
Fill out the form below or give us a call. We'll get back to you the same day.
Mon–Fri 7AM–6PM Same-day emergency service available
Service Area
St. Louis City & County Jefferson County & surrounding areas
What We Service
Residential & Commercial HVAC All major brands
Join Our Team
WE'RE ALWAYS LOOKING FOR GOOD PEOPLE.
Comfort Zone HVAC is growing. If you're a licensed or experienced HVAC technician who takes pride in honest work, we'd love to hear from you.
Why Work Here
A SHOP THAT TREATS YOU RIGHT.
We're a local, family-operated company — not a corporate franchise. You'll work alongside people who genuinely care about doing the job right, not just hitting a quota.
Competitive pay based on experience
Company vehicle & tools provided
Steady, year-round work
Room to grow as the company grows
Positions We're Looking For
HVAC Service Technicians Installers Apprentices welcome
