"Walter R." wrote in message
...
A central vac should not be making this much noise. Mine is in the garage,
in a 2x2x3 wooden box (no fans in box), vented to the outside with a 4"
duct. You cannot hear the unit inside the house at all, just the swish of
the air through the cleaner nozzle. Barely audible outside.

It's mounted in the basement and that makes all the difference, noisewise.
A high RPM motor of enough HP is gonna make noise naked to the world.
Mine's not yet in a box, either, so that's two major differences between my
install and yours and probably more than enough to make the difference,
noisewise.

--
Bobby G.