If your furnace isn't working, won't turn on, or is banging, rattling, or humming loudly, don't wait in the cold. Air Comfort Service delivers fast, reliable furnace repair across St. Louis & St. Charles.
Same-day & after-hours emergency furnace repair
Certified technicians fix all makes & models
Family-owned & trusted since 1969
4.9 star Google reviews
Is Your Furnace Broken?
If your furnace is doing any of these, call a furnace repair contractor before you lose heat completely. If your furnace is doing any of these, call for furnace repair or service before you lose heat.
Furnace Won't Turn On
Your furnace won't start, won't ignite, or keeps tripping the breaker.
Short Cycling & Shutdowns
The furnace turns on and off repeatedly or shuts off for no reason. Reset it once and if it keeps happening, it's time to call for furnace repair.
Blowing Cold Air / No Heat
The furnace runs but blows cold air, or there's no heat at all. Don't spend a night in a cold St. Louis home.
Strange or Burning Smells
Funny odors or a burning smell from the vents can signal a serious problem. Turn the system off and call us right away.
No Heat? Loud Furnace? We'll Fix It Fast.
Same-day appointments and 24-hour emergency furnace repair across St. Louis & St. Charles.
Our Furnace Repair Process
When you call Air Comfort Service for a broken or noisy furnace, here's exactly what to expect:
- Thorough Assessment: Our certified technicians inspect your furnace to find the root cause of the noise or breakdown.
- Transparent Quote: You get upfront pricing before any work begins. No surprises.
- Efficient, Lasting Repairs: We use modern tools and the right parts to fix your furnace right the first time.
- Prevention Advice: We show you how to keep your furnace running quietly and reliably all winter.
- Ongoing Support: Questions after the visit? Our team is one call away, available 24/7.
Try These Quick Checks First
Before you call, a few simple troubleshooting steps sometimes solve the issue:
- Check the thermostat: Confirm it's set to "Heat" and above room temperature.
- Inspect the air filter: A clogged filter blocks airflow and causes noise and shutdowns.
- Reset the furnace: Flip the power switch off and on once.
- Listen for the noise: Banging, grinding, or humming means it's time to call a pro.
Still broken or still loud? Don't risk further damage. Call us today at 314-819-0028.
Schedule Repair
Furnace Repair FAQs
A: Loud banging, rattling, squealing, grinding, or humming from a furnace usually points to delayed ignition, loose components, a worn blower motor, or an electrical issue. Because some of these are safety concerns, it's best to turn the furnace off and schedule a repair rather than letting it run.