"Walter R." wrote in message
news
May furnace is over 20 years old and I would like to replace it. It is
located in the attic of my single story house. Because the old furnace
sits
on the floor joists, a lot of noise and vibration penetrates into the
living
areas below.

I keep the fan lubricated and have put rubber-matting underneath the
furnace, but it is still noisy.

Is it approved practice to suspend the furnace from the rafters rather
than
having it sit on the joists?
This would probably avoid most noise and vibration.

Thanks for any input

--

Walter
The Happy Iconoclast www.rationality.net
-



You can, but done wrong and it will make more noise than it does now.
Make sure you do it right, and not with metal strap...what will you do if a
strap breaks? LOL..its interesting to have one hit from a couple of feet
up...

Build a platform, use a min of 1/2 or larger threaded rod, and have at it.
We have hung many this way, and it works fine, however, if you have metal
duct, you will need to add flex to the unit to do two things: Isolate the
vibration of the unit, and to reconnect your ducting.
Also, make sure your clearances are still within code and to what the unit
is rated at.