# Fred # wrote:
Wife purchased three of the quiet Broan QT080L bathroom exhaust fans
with light and night light. I tested it out on the kitchen table and
it was quiet so then I proceeded with the installation in the
downstairs 1/2 bathroom. The bathroom is down to studs and subfloor
with all insulation removed for remodel. The Broan has a 4" duct
connection but the house has 3".

I suggest that is your answer. Dropping the size of the exhaust
increases the noise. You also increase the noise the smaller the room. It
sounds louder.

Once everything was connected, the
fan wasn't all that quiet. The noise was from both fan vibration and
wind. Its still more quiet than the old noisy fan but I could hear
the new fan from upstairs. The mounting is solid to joist per
instruction and the connection to the 3" duct is tight. I suppose
once I close up the ceiling and walls with insulation it would not be
as bad. Are quiet fans really all that quite? Maybe should have
purchased Panasonic fans instead - its the same price.

--
Joseph Meehan

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