"TP" wrote in message
...
We have a booster fan built-in to a 8 inch round duct. This was needed for the
long run, 50+ foot. It has a rheostat for speed adjustment. Seems to move the
air just fine at 60% of full power. Problem is the noise. When the air is
moving the noise travels to all the rooms. We did replace it, thinking the
first one was defected. Does anyone know of a quiet booster fan?

Thanks,
TP

This is Turtle.

The only cure for noise was given to you by Joesph Meehan in this thread. Now i
use a 10 foot run of flex Duct and put the fan in the middle of the flex run.

TURTLE