Furnace Repair in St. Louis, MO
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 homeowners count on STL Air Pros for fast, reliable furnace repair. Our NATE-certified technicians serve all of St. Louis and the surrounding St. Louis City 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 St. Louis — Local Context
St. Louis City's housing stock spans 19th-century brick townhomes in Soulard and Lafayette Square to mid-century ranches in North City. Many older homes have converted gravity furnaces and tight mechanical spaces, so compact high-efficiency furnaces and ductless mini-splits are common upgrades. Urban lots also mean rooftop and side-yard condenser placement matters for noise and airflow.
What We Handle in St. Louis
Furnace Repair in St. Louis — Common Questions
Answers to the questions St. Louis homeowners ask us most.
How much does furnace repair cost in St. Louis?
Furnace repair in St. Louis 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 St. Louis 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 St. Louis during freezing weather are prioritized for same-day dispatch.
Do you repair heat pumps in St. Louis 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 St. Louis 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.
Furnace Repair OverviewOther HVAC services in St. Louis:
Need Furnace Repair in St. Louis?
Call now for same-day service, free estimates, or 24/7 emergency repair in St. Louis.