I have a Carrier Gas Furnace. I recently finished a basement renovation so arranged to have the ducts cleaned. After the ducts were cleaned, the sound coming from the air intake and vents is very loud. It is so loud, it drowns out the TV on the main floor of the house and wakes the kids up in the morning.
The air circulation was not that loud prior to the duct cleaning. The sound is from the air circulation not from the unit itself.
