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  3. My unit is rumbling when it’s trying to fire.

My unit is rumbling when it’s trying to fire.

Why does my unit make noises?

This can be a result of a blockage in the flue, incorrect vent sizing, incorrect vent length, and/or incorrect gas pressure/gas type. If all of these match the requirements in the installation manual and there is still a rumbling sound, please call Technical Service at 866-766-7489.

Applicable Models

  • Models: ALL MODELS
Updated on April 17, 2021

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