Terry -- i imagine that the kind of dampening you're talking about is the
best -- perfect isolation!

"Terry" wrote in message
. ..

"DanG" wrote in message
news:tD2Yc.13944$Ka6.4208@okepread03...
The problem is related to the HVAC unit. It is a typical problem
with attic mounted units. The cure is doing something to the
unit, not adding screws to the drywall.

It should be installed on isolation pads with vibrasorber
connections to any and all duct work.

An additional solution would be to suspend the unit by all-
thread with vibration damping couplings, keeping it completely off
the ceiling framing.

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Keep the whole world singing . . . .
DanG (remove the sevens)




"Allen S." wrote in message
news
can someone help with this problem? i have a problem with
vibration in my (spare) bedroom ceiling that i cannot stop --
finding the source is easy -- the furnace and a/c evaporator is
directly overhead. As far as i can tell, there's nothing wrong
with either unit -- i suspect that when the home was originally
built (about 5 years ago) that somebody did a lousy job of
hanging the sheetrock and/or isolating the upstairs unit.

i have put in about 15 sheet rock screws but the vibration
continues -- it's wierd, if you just barely touch the ceiling
the vibration will stop but give it about 30 seconds and it'll
start back...

any suggestions? should i continue with the sheetrock screws (my
ceiling looks like a gunfight broke out! ...anyone ever had
this problem...


---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
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Come to think of it the air exchanger units, in each of my daughter's
houses, which run continuously 24/7 are suspended by vibration damping
straps. Also the pipes which connect it are soft and flexible. In one case
it is immediately below a bedroom and the other immediately next to a
bedroom. Never heard any complaints about noise or vibration. Granted that
an AC unit has a more powerful motor, but idea the same.


Terry -- i imagine that the kind of dampening you're talking about is the
best -- perfect isolation!

"Terry" wrote in message
. ..

"DanG" wrote in message
news:tD2Yc.13944$Ka6.4208@okepread03...
The problem is related to the HVAC unit. It is a typical problem
with attic mounted units. The cure is doing something to the
unit, not adding screws to the drywall.

It should be installed on isolation pads with vibrasorber
connections to any and all duct work.

An additional solution would be to suspend the unit by all-
thread with vibration damping couplings, keeping it completely off
the ceiling framing.

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Keep the whole world singing . . . .
DanG (remove the sevens)




"Allen S." wrote in message
news
can someone help with this problem? i have a problem with
vibration in my (spare) bedroom ceiling that i cannot stop --
finding the source is easy -- the furnace and a/c evaporator is
directly overhead. As far as i can tell, there's nothing wrong
with either unit -- i suspect that when the home was originally
built (about 5 years ago) that somebody did a lousy job of
hanging the sheetrock and/or isolating the upstairs unit.

i have put in about 15 sheet rock screws but the vibration
continues -- it's wierd, if you just barely touch the ceiling
the vibration will stop but give it about 30 seconds and it'll
start back...

any suggestions? should i continue with the sheetrock screws (my
ceiling looks like a gunfight broke out! ...anyone ever had
this problem...


---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.744 / Virus Database: 496 - Release Date: 8/25/2004


Come to think of it the air exchanger units, in each of my daughter's
houses, which run continuously 24/7 are suspended by vibration damping
straps. Also the pipes which connect it are soft and flexible. In one case
it is immediately below a bedroom and the other immediately next to a
bedroom. Never heard any complaints about noise or vibration. Granted that
an AC unit has a more powerful motor, but idea the same.