Tappan Combustion Noise / Flame Instability

Furnace makes a loud rumbling or roaring noise while running.

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

Incorrect gas pressure, cracked heat exchanger on Tappan furnace, blocked flue, burner misalignment

Safety: Turn off the furnace immediately. Combustion noise can indicate unsafe operation and potential carbon monoxide risk.

Steps:

Do not attempt to adjust gas pressure yourself.
Visually inspect the vent pipe for obvious blockages or disconnections.
Contact a licensed HVAC technician to perform a combustion analysis, inspect the heat exchanger, and verify gas input.

Professional Required 5/5

Heat Exchanger

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