Furnace Repair in St. Louis
A furnace that won't fire on a January night in St. Louis is an emergency. Our techs diagnose and repair gas, electric, and dual-fuel systems safely — and we carry the parts to get your heat back fast.
Furnace Repair in St. Louis
St. Louis winters swing hard — 60° one week, single digits the next — and an older furnace under that stress will find its weak point. Our NATE-certified, EPA-licensed technicians repair gas furnaces, electric furnaces, heat pumps, and dual-fuel systems from every major manufacturer. Because a cracked heat exchanger or a faulty ignition can be a carbon monoxide risk, we start every heating call with a safety inspection before we touch anything else. We stock igniters, flame sensors, blower motors, pressure switches, and control boards for common models, so most heating repairs are completed in one trip. You'll always get a written, upfront price and a clear explanation of what failed and why.
Signs You Need Heating Repair
If any of these sound familiar, it's time to give us a call.
What We Handle
How It Works
Call or book online
Describe the symptom — no heat, short cycling, noise. If you have a CO alert, we'll treat it as a priority emergency.
Safety-first diagnostic
We check for CO, flame roll-out, and heat exchanger cracks before anything else, then run a full electrical and ignition diagnostic.
Upfront price
You see a written, flat price for the repair and an honest repair-vs-replace recommendation before we begin.
Repair & safety verify
We fix it, verify safe ignition and proper temperature rise, and confirm the heat is restored before we leave.
Furnace Repair in St. Louis — Common Questions
What St. Louis Customers Say
Real reviews from homeowners across the metro who trusted us with their HVAC.
"Our AC went out on a 97-degree day and STL Air Pros had a tech at our house within two hours. Fixed a blown capacitor on the spot, explained exactly what failed and why, and the price was totally reasonable. Won't call anyone else."
Marcus Thompson
Webster Groves, MO · May 2025
"Replaced our 18-year-old furnace with a new high-efficiency unit. The crew was on time, professional, and cleaned up completely. They also caught a small carbon monoxide issue with the old heat exchanger — probably saved our family from a serious problem."
Diane Reynolds
Kirkwood, MO · March 2025
"I've used three different HVAC companies over the years and STL Air Pros is in a different league. Straight answers, no upselling, competitive pricing. My maintenance plan has caught two small issues before they became expensive repairs."
James Kowalski
Chesterfield, MO · January 2025
Related Reading
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Ready to Schedule Heating Repair?
Licensed, insured, and ready to help across the St. Louis metro. Call now or request a free estimate online.