Furnace is noisy during operation; whistling, roaring, or droning sounds from the burner area.
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Possible Causes
How to Fix / Troubleshooting
Safety: Turn off the furnace if noise is severe or accompanied by smell of gas. Do not attempt to adjust gas settings yourself.
- Check flue and air intake: Ensure the Kospel flue terminal and air intake are clear of obstructions.
- Inspect burner (visual only): With power off and panels removed, visually inspect the burner for heavy rust or debris. Do not modify burner ports.
- Secure panels: Make sure all combustion chamber covers and panels are properly fitted and sealed; loose panels can resonate.
Persistent combustion noise requires a qualified technician to check gas pressure, burner condition, and fan settings.
Repair Difficulty
Required Part
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