Furnace Making Noise
Strange sounds from your furnace? Learn what different noises mean and when to call for help.
Common Symptoms
If you're experiencing any of these symptoms, you may have this problem:
Possible Causes & Solutions
Delayed Ignition
Pro RequiredProfessional burner cleaning and adjustment
Blower Motor Issues
Pro RequiredMotor lubrication or replacement
Loose Panels or Ducts
DIY PossibleTighten panels and duct connections
Dirty Burners
Pro RequiredProfessional burner cleaning
Cracked Heat Exchanger
Pro RequiredImmediate professional inspection required
When to Call a Professional
While some issues have DIY solutions, HVAC systems are complex. Call a professional when:
- DIY solutions don't resolve the problem
- The issue involves electrical components
- You smell gas or burning odors
- The problem returns after temporary fixes
- Your system is under warranty (DIY repairs may void it)
Frequently Asked Questions
Why won't my furnace turn on?
Common causes include a tripped circuit breaker, thermostat issues, pilot light problems, or a faulty ignition system. We can diagnose all furnace issues.
My furnace is making strange noises. What does it mean?
Different noises indicate different issues: banging may mean delayed ignition, squealing could be a belt issue, and rumbling might indicate a burner problem.
How often should I change my furnace filter?
Standard filters should be changed every 1-3 months depending on usage, pets, and allergies. Higher-quality filters may last longer but check monthly.
Is a cracked heat exchanger dangerous?
Yes, a cracked heat exchanger can leak carbon monoxide, which is dangerous. If suspected, turn off your furnace immediately and call for service.