Re: Roof mounted air conditioner noise

[Kurt Albershardt]

Julian Russell wrote:
>
> The roof of the building in which my studio is located has a condenser that
> is vibrating and sending an awful sound through my place. Can anyone suggest
> a method to decouple it from the roof to get rid of the vibration?

HVAC supply houses will have several options available. Call your
contractor or head down to the supply house and try to sweet-talk them
into selling to you.

[Kurt Albershardt]

Julian Russell wrote:
>
> The roof of the building in which my studio is located has a condenser that
> is vibrating and sending an awful sound through my place. Can anyone suggest
> a method to decouple it from the roof to get rid of the vibration?


Should have mentioned that you will most likely need to decouple the
unit from the roof as well as from the ductwork. There are parts for
both these tasks.

[Raymond]

Julian Russell wrote
>Can anyone suggest
>a method to decouple it from the roof to get rid of the vibration?

Room inside a room isolation and a foot of airspace for all walls, this may
just do the trick. But it may be cheaper to just move your studio to another
building.

[Julian Russell]

Thanks guys, but...

Moving to another studio or moving the unit are not really options... how
'bout some isolation and/or vibration control ideas?

"Scott Dorsey" > wrote in message
...
> Julian Russell > wrote:
> >The roof of the building in which my studio is located has a condenser
that
> >is vibrating and sending an awful sound through my place. Can anyone
suggest
> >a method to decouple it from the roof to get rid of the vibration?
>
> It may be easier to move it to another location so that it's not a on a
> node. Ask your local acoustician.
> --scott
>
> --
> "C'est un Nagra. C'est suisse, et tres, tres precis."

[Dale Farmer]

Scott Dorsey wrote:

> Julian Russell > wrote:
> >Thanks guys, but...
> >
> >Moving to another studio or moving the unit are not really options... how
> >'bout some isolation and/or vibration control ideas?
>
> Moving the unit may well be cheaper than the degree of shockmounting required.
> It might also be cheaper to replace the motor with a faster or slower one,
> to change the vibration frequency and move the modes around. Either way,
> you're talking about doing some engineering here.
>
> Goodyear makes some isolation platforms and mounts for compressors and
> air handlers but you need to find out where the building resonances are
> in order to get anything like this to work.
> --scott
> --
> "C'est un Nagra. C'est suisse, et tres, tres precis."

What scott says. Is it the unit that services your spaces or someone else's
space in the building?

--Dale

[Julian Russell]

Someone elses.... errr..


"Dale Farmer" > wrote in message
...
>
>
> Scott Dorsey wrote:
>
> > Julian Russell > wrote:
> > >Thanks guys, but...
> > >
> > >Moving to another studio or moving the unit are not really options...
how
> > >'bout some isolation and/or vibration control ideas?
> >
> > Moving the unit may well be cheaper than the degree of shockmounting
required.
> > It might also be cheaper to replace the motor with a faster or slower
one,
> > to change the vibration frequency and move the modes around. Either
way,
> > you're talking about doing some engineering here.
> >
> > Goodyear makes some isolation platforms and mounts for compressors and
> > air handlers but you need to find out where the building resonances are
> > in order to get anything like this to work.
> > --scott
> > --
> > "C'est un Nagra. C'est suisse, et tres, tres precis."
>
> What scott says. Is it the unit that services your spaces or someone
else's
> space in the building?
>
> --Dale
>
>

[Kurt Albershardt]

Scott Dorsey wrote:
>
> Goodyear makes some isolation platforms and mounts for compressors and
> air handlers

http://www.techproductscorp.com/ also has a lot of good options in a
wide range of sizes.



> but you need to find out where the building resonances are
> in order to get anything like this to work.

If there's no shockmounting of any sort on the units already and if the
noise frequency is high enough, these can help.

[James Boyk]

You need professional assistance from a *good* acoustician (not like the
one who made a hall 10 dB noisier at 120 Hz for me, then turned his back
on the job).

James Boyk

[Ty Ford]

In Article >, "Julian Russell"
> wrote:
>Hi,
>The roof of the building in which my studio is located has a condenser that
>is vibrating and sending an awful sound through my place. Can anyone suggest
>a method to decouple it from the roof to get rid of the vibration?
>
>Thanks in advance,
>
>Julian Russell
>http://magpiesound.com


Hi Julian,

In the US, Mason Industries sells industrial noise dampeners of all sorts.
I'm sure they would have something to reduce the problem.

Regards,

Ty Ford

For Ty Ford V/O demos, audio services and equipment reviews,
click on http://www.jagunet.com/~tford

[Julian Russell]

Thanks Ty,

The vibration is slight but annoying, it is definitely just a question of
de-coupling the beast from the roof
My studio partner found some neat cork and rubber sandwiches that we are
going to put under the pad... wish me luck

Julian Russell
http://magpiesound.com




"Ty Ford" > wrote in message
...
> In Article >, "Julian Russell"
> > wrote:
> >Hi,
> >The roof of the building in which my studio is located has a condenser
that
> >is vibrating and sending an awful sound through my place. Can anyone
suggest
> >a method to decouple it from the roof to get rid of the vibration?
> >
> >Thanks in advance,
> >
> >Julian Russell
> >http://magpiesound.com
>
>
> Hi Julian,
>
> In the US, Mason Industries sells industrial noise dampeners of all sorts.
> I'm sure they would have something to reduce the problem.
>
> Regards,
>
> Ty Ford
>
> For Ty Ford V/O demos, audio services and equipment reviews,
> click on http://www.jagunet.com/~tford
>

[EganMedia]

>> The roof of the building in which my studio is located has a condenser that
>> is vibrating and sending an awful sound through my place. Can anyone
>suggest
>> a method to decouple it from the roof to get rid of the vibration?

There are lots of companies that offer isolation products. Try
www.kineticsnoise.com

The most popular method I've seen is to build a steel hanging support for the
unit and hang the unit with springs. My air handlers are inside the building
and are all hung from the ceiling with springs. The compressors are on the
ground outside on vibration isolators.


Joe Egan
EMP
Colchester, VT
www.eganmedia.com

[Richard Crowley]

"EganMedia" > wrote in message
...
> >> The roof of the building in which my studio is located has a condenser
that
> >> is vibrating and sending an awful sound through my place. Can anyone
> >suggest
> >> a method to decouple it from the roof to get rid of the vibration?
>
> There are lots of companies that offer isolation products. Try
> www.kineticsnoise.com
>
> The most popular method I've seen is to build a steel hanging support for
the
> unit and hang the unit with springs. My air handlers are inside the
building
> and are all hung from the ceiling with springs. The compressors are on
the
> ground outside on vibration isolators.

Wouldn't it be cheaper to fix whatever is out of balance?

[DIANE KIRK]

Julian Russell wrote:
>
> The roof of the building in which my studio is located has a condenser that
> is vibrating and sending an awful sound through my place. Can anyone suggest
> a method to decouple it from the roof to get rid of the vibration?

HVAC supply houses will have several options available. Call your
contractor or head down to the supply house and try to sweet-talk them
into selling to you.



You need a roof flashing. go to a local HVAC- Heating, Ventilation, and Air Conditioning supplier.