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CTYankee · 12-02-2024, 01:52 PM

If a change of filter doesn't do the trick it could be an air duct flexing. It's a common source of noise that occurs when the pressure inside the duct lessons when the system shuts off.

12-02-2024, 01:52 PM	#4
CTYankee Member Join Date: Dec 2005 Location: Guilford, CT and Bear Island, NH Posts: 29 Thanks: 483 Thanked 20 Times in 9 Posts	Maybe a duct is flexing If a change of filter doesn't do the trick it could be an air duct flexing. It's a common source of noise that occurs when the pressure inside the duct lessons when the system shuts off.

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