Furnace is very noisy during operation, with banging, booming, or rumbling sounds.
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: Loud bangs or booms can indicate dangerous combustion conditions. Turn off the furnace and gas supply and call a qualified engineer.
User action: Do not attempt to relight the furnace if loud bangs occur at ignition.
Technician checks:
- Inspect and clean the burner and combustion chamber.
- Check ignition electrode gap and position.
- Measure and adjust gas pressure and combustion settings.
- Tighten or replace loose baffles or mounting hardware.
Repair Difficulty
Required Part
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