When you need a furnace repair in Fenton, you want heat back in your home or business as fast as possible. Our licensed techs understand that stress. They are skilled at diagnosing and repairing heating systems for homeowners throughout the St. Louis area and we usually have same day appointments. Call now and let's get that issue fixed.

Common Signs Your Heating System Needs Repair
- The furnace tries to start but won't light, common in units over 12 years old
- Grinding noises or weak airflow from the blower motor
- The furnace shuts off on its own as a safety response
- The thermostat and furnace aren't communicating
- A burning smell or soot, which can point to a cracked heat exchanger
Many Fenton homes built between the 1960s and 1980s still run original ductwork sized for smaller furnaces. That mismatch puts extra strain on blower motors and ignition systems, which can fail sooner than they would in newer homes.
Repair or Replace
Most furnaces last 15 to 20 years with normal care. If yours is past that mark and repair bills keep climbing, you may be paying to keep a system going that's on its way out. A cracked igniter or failed flame sensor doesn't always mean the whole unit is done. In many cases, one solid repair adds years of reliable life. We'll give you a straight answer on which situation you're in.
Try This Before You Call
A few common no-heat problems are simple fixes you can try first:
- Check the air filter. A clogged filter can restrict airflow enough to shut the furnace down.
- Replace the thermostat batteries if your model uses them.
- Confirm the thermostat is set to Heat, not Cool or Off.
- Check your breaker panel for a tripped furnace breaker.
- Check supply vents for anything blocking or closing them.
If you've tried these and the system still isn't heating, it's time to call.
Our Heating Repair Process
- Ignition system check. We test the pilot or igniter for consistent flame or spark.
- Burner assembly inspection. We check for carbon buildup or corrosion reducing heat output.
- Blower and fan testing. We check airflow and listen for bearing wear.
- Wiring review. We look for loose terminals or damaged insulation.
- Safety control check. We inspect limit switches and flame sensors.
- Repair. Once we know the cause, we explain what failed, what the fix involves, and what it costs before any work begins.
- Functional test. We cycle the thermostat, monitor startup, and confirm the blower reaches proper operating speed.

Missouri has no statewide HVAC licensing requirement (opens in a new tab). Contractor qualifications can vary across the state. Technicians working in Fenton work under the St. Louis County Mechanical license MSM02530. These licenses provide proof of training and code compliance that you can verify.
Heating System Repair Cost
Cost depends on the part involved, how easy it is to source, and how accessible your furnace is. A simple flame sensor replacement costs less than a control board repair. We give you a clear price before any work begins.
Why Homeowners Choose Us
Co-owner Craig Denton has led local HVAC teams for over 35 years, and that experience shapes every heating repair we do in Fenton, MO.
- Technicians train hands-on at our in-house facility before working on your home
- Every repair follows our 6-Step Service System, so nothing gets skipped
- Upfront pricing, no hidden fees
- 24-hour response, including weekend emergency service
- Every technician passes a background check and drug screening
Ready to get your heat back? Patriot Heating, Cooling and Air Quality repairs furnaces throughout Fenton, MO. Schedule your repair today.