Furnace Repair in Affton, MO
A furnace that won't fire on a January night in Affton 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 Affton
Affton homeowners count on STL Air Pros for fast, reliable furnace repair. Our NATE-certified technicians serve all of Affton and the surrounding St. Louis County area with same-day appointments, upfront flat-rate pricing, and 24/7 emergency availability. We repair, install, and maintain every major brand, and every job is backed by our workmanship guarantee.
HVAC in Affton — Local Context
Affton's 1920s-40s brick bungalows have tight lots and compact mechanical spaces, making space-saving high-efficiency furnaces and ductless mini-splits ideal for additions and finished basements. Many homes still have converted gravity systems, so ductwork upgrades and proper returns are common projects.
What We Handle in Affton
Furnace Repair in Affton — Common Questions
Answers to the questions Affton homeowners ask us most.
How much does furnace repair cost in Affton?
Furnace repair in Affton typically ranges from $150 to $700. Igniters and flame sensors are on the lower end; blower motors, gas valves, and control boards run higher. You get a flat, upfront price after the diagnostic — no hourly billing.
Is a furnace problem in Affton an emergency?
It can be. If your carbon monoxide detector is going off, you smell gas, or the pilot flame is yellow or tilted, leave the house and call us immediately. No-heat calls in Affton during freezing weather are prioritized for same-day dispatch.
Do you repair heat pumps in Affton too?
Yes. Our techs are trained on heat pumps, dual-fuel systems, and electric furnaces in addition to gas furnaces. If your heat pump in Affton is stuck in defrost or blowing cold air in heating mode, we can diagnose the reversing valve, defrost board, or refrigerant charge.
"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
About Furnace Repair
Full details on our furnace repair service across St. Louis.
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