Florissant, St. Louis County

Furnace Repair in Florissant, MO

A furnace that won't fire on a January night in Florissant 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.

5.0 Google RatingLicensed & Insured24/7 Emergency Service

Furnace Repair in Florissant

Florissant homeowners count on STL Air Pros for fast, reliable furnace repair. Our NATE-certified technicians serve all of Florissant 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 Florissant — Local Context

Florissant's large stock of 1960s-70s ranch homes means many original furnaces and AC units are past their 15-year mark. These slab-foundation homes benefit from high-efficiency replacements and updated returns, and the flat lots make outdoor unit placement straightforward.

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Furnace Repair in Florissant by STL Air Pros

What We Handle in Florissant

Igniter, flame sensor, and pilot assembly replacement
Blower motor and capacitor repair
Heat exchanger inspection and crack detection
Pressure switch and limit switch diagnostics
Gas valve and burner cleaning and adjustment
Control board and thermostat repair
Heat pump defrost and reversing valve repair
Electric furnace element and sequencer replacement

Furnace Repair in Florissant — Common Questions

Answers to the questions Florissant homeowners ask us most.

How much does furnace repair cost in Florissant?

Furnace repair in Florissant 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 Florissant 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 Florissant during freezing weather are prioritized for same-day dispatch.

Do you repair heat pumps in Florissant 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 Florissant is stuck in defrost or blowing cold air in heating mode, we can diagnose the reversing valve, defrost board, or refrigerant charge.

5.0 Stars

"Honest, thorough, and fast. They diagnosed a refrigerant leak that two other companies missed. Repaired the leak, recharged the system, and it's been running perfectly ever since. I trust these guys completely."

— Tom Brennan, Florissant, MO

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