A recent post on soundproofing reminded me to ask this....

I'll probably need a new furnace for this winter. I was thinking of
asking the installer to mechanically isolate the main duct hookups
(return and output) from the furnace. So that the vibration of the
fan does not transmit throughout the house ductwork. Also have the
furnace itself set on an isolation mat to prevent vibration
transmission to the floor.

Do any HVAC installers here have any experience doing this?

Would the installer simply use maybe a 6 inch length of large flex
duct to make the connections to the main ducts? Or is there a rubber
band of some kind that can be inserted to isolate the duct work from
the furnace? To achieve a vibration break.

I have an audio listening/recording studio, so would like to eliminate
the need to shut off the furnace when recording. Currently the
furnace transmits a fairly high amount vibration into the ducts. I'll
also be ordering the quietest furnace I can find.

On Aug 1, 12:29�pm, RickH wrote:
A recent post on soundproofing reminded me to ask this....

I'll probably need a new furnace for this winter. �I was thinking of
asking the installer to mechanically isolate the main duct hookups
(return and output) from the furnace. �So that the vibration of the
fan does not transmit throughout the house ductwork. �Also have the
furnace itself set on an isolation mat to prevent vibration
transmission to the floor.

Do any HVAC installers here have any experience doing this?

Would the installer simply use maybe a 6 inch length of large flex
duct to make the connections to the main ducts? �Or is there a rubber
band of some kind that can be inserted to isolate the duct work from
the furnace? �To achieve a vibration break.

I have an audio listening/recording studio, so would like to eliminate
the need to shut off the furnace when recording. �Currently the
furnace transmits a fairly high amount vibration into the ducts. �I'll
also be ordering the quietest furnace I can find.

I have seen noise isolators for furnace ducts, a rubber connection.
any good HVAC company should be able to help you spend more money

A recent post on soundproofing reminded me to ask this....

I'll probably need a new furnace for this winter. I was thinking of
asking the installer to mechanically isolate the main duct hookups
(return and output) from the furnace. So that the vibration of the
fan does not transmit throughout the house ductwork. Also have the
furnace itself set on an isolation mat to prevent vibration
transmission to the floor.

Do any HVAC installers here have any experience doing this?

Would the installer simply use maybe a 6 inch length of large flex
duct to make the connections to the main ducts? Or is there a rubber
band of some kind that can be inserted to isolate the duct work from
the furnace? To achieve a vibration break.

I have an audio listening/recording studio, so would like to eliminate
the need to shut off the furnace when recording. Currently the
furnace transmits a fairly high amount vibration into the ducts. I'll
also be ordering the quietest furnace I can find.


*Lots of things can be done to reduce the sound transmission of your
furnace. There are flex duct connectors. When I worked on TV studios they
would go all out to reduce noise as they wanted the A/C running during
production. Duct liner inside the ducts helps. Oversize ducts keeps the
wind noise down. The only limitation is your wallet. You may want to use
an installer who has experience with this. There are consultants who can
make specifications and drawings for you to pass on to your installer.

RickH wrote:
A recent post on soundproofing reminded me to ask this....

I'll probably need a new furnace for this winter. I was thinking of
asking the installer to mechanically isolate the main duct hookups
(return and output) from the furnace. So that the vibration of the
fan does not transmit throughout the house ductwork. Also have the
furnace itself set on an isolation mat to prevent vibration
transmission to the floor.

Do any HVAC installers here have any experience doing this?

Would the installer simply use maybe a 6 inch length of large flex
duct to make the connections to the main ducts? Or is there a rubber
band of some kind that can be inserted to isolate the duct work from
the furnace? To achieve a vibration break.

I have an audio listening/recording studio, so would like to eliminate
the need to shut off the furnace when recording. Currently the
furnace transmits a fairly high amount vibration into the ducts. I'll
also be ordering the quietest furnace I can find.

Hi,
Isolate ducts with canvas type membrane? Cut out a section and replace
with canvs membrane properly ribbed or framed.

On Aug 1, 11:29*am, RickH wrote:
A recent post on soundproofing reminded me to ask this....

I'll probably need a new furnace for this winter. *I was thinking of
asking the installer to mechanically isolate the main duct hookups
(return and output) from the furnace. *So that the vibration of the
fan does not transmit throughout the house ductwork. *Also have the
furnace itself set on an isolation mat to prevent vibration
transmission to the floor.

Do any HVAC installers here have any experience doing this?

Would the installer simply use maybe a 6 inch length of large flex
duct to make the connections to the main ducts? *Or is there a rubber
band of some kind that can be inserted to isolate the duct work from
the furnace? *To achieve a vibration break.

I have an audio listening/recording studio, so would like to eliminate
the need to shut off the furnace when recording. *Currently the
furnace transmits a fairly high amount vibration into the ducts. *I'll
also be ordering the quietest furnace I can find.

You need a canvas connector at the supply and return ducts at the
furnace . For air noise control at your Studio outlets, you need to
run flex duct where possible and if it meets code in your locale.
Also, instead of running the supply/return ducts for the Studio in a
straight pattern back to the Furnace Trunk Ducts, put a couple of
deliberate turns in them which will reduce noise . When the Installer
does the furnace, tell him to set the blower speed on the lowest
possible settings while still satisfying the temperature rise specs
listed on the furnace.

RickH wrote:
A recent post on soundproofing reminded me to ask this....

I'll probably need a new furnace for this winter. I was thinking of
asking the installer to mechanically isolate the main duct hookups
(return and output) from the furnace. So that the vibration of the
fan does not transmit throughout the house ductwork. Also have the
furnace itself set on an isolation mat to prevent vibration
transmission to the floor.

Do any HVAC installers here have any experience doing this?

Would the installer simply use maybe a 6 inch length of large flex
duct to make the connections to the main ducts? Or is there a rubber
band of some kind that can be inserted to isolate the duct work from
the furnace? To achieve a vibration break.

I have an audio listening/recording studio, so would like to eliminate
the need to shut off the furnace when recording. Currently the
furnace transmits a fairly high amount vibration into the ducts. I'll
also be ordering the quietest furnace I can find.

Instead of setting the furnace on an isolation mat, consider hanging it from
the rafters with springs. Any vibration will be transmitted to the outer
walls via the rafters.

On Aug 1, 2:11*pm, "HeyBub" wrote:
RickH wrote:
A recent post on soundproofing reminded me to ask this....

I'll probably need a new furnace for this winter. *I was thinking of
asking the installer to mechanically isolate the main duct hookups
(return and output) from the furnace. *So that the vibration of the
fan does not transmit throughout the house ductwork. *Also have the
furnace itself set on an isolation mat to prevent vibration
transmission to the floor.

Do any HVAC installers here have any experience doing this?

Would the installer simply use maybe a 6 inch length of large flex
duct to make the connections to the main ducts? *Or is there a rubber
band of some kind that can be inserted to isolate the duct work from
the furnace? *To achieve a vibration break.

I have an audio listening/recording studio, so would like to eliminate
the need to shut off the furnace when recording. *Currently the
furnace transmits a fairly high amount vibration into the ducts. *I'll
also be ordering the quietest furnace I can find.

Instead of setting the furnace on an isolation mat, consider hanging it from
the rafters with springs. Any vibration will be transmitted to the outer
walls via the rafters.- Hide quoted text -

- Show quoted text -

If a brand new furnace has so much vibration that isolation is needed,
something is very wrong. In other words, nothing other than a normal
install should be needed.

On Aug 1, 2:04*pm, wrote:
On Aug 1, 2:11*pm, "HeyBub" wrote:





RickH wrote:
A recent post on soundproofing reminded me to ask this....

I'll probably need a new furnace for this winter. *I was thinking of
asking the installer to mechanically isolate the main duct hookups
(return and output) from the furnace. *So that the vibration of the
fan does not transmit throughout the house ductwork. *Also have the
furnace itself set on an isolation mat to prevent vibration
transmission to the floor.

Do any HVAC installers here have any experience doing this?

Would the installer simply use maybe a 6 inch length of large flex
duct to make the connections to the main ducts? *Or is there a rubber
band of some kind that can be inserted to isolate the duct work from
the furnace? *To achieve a vibration break.

I have an audio listening/recording studio, so would like to eliminate
the need to shut off the furnace when recording. *Currently the
furnace transmits a fairly high amount vibration into the ducts. *I'll
also be ordering the quietest furnace I can find.

Instead of setting the furnace on an isolation mat, consider hanging it from
the rafters with springs. Any vibration will be transmitted to the outer
walls via the rafters.- Hide quoted text -

- Show quoted text -

If a brand new furnace has so much vibration that isolation is needed,
something is very wrong. * In other words, nothing other than a normal
install should be needed.- Hide quoted text -

- Show quoted text -

That all depends on one's tolerance level. I have a house full of
musicians living here (me, kids, wife, and my oldest ones band)...
Try recording sound with a furnace runing, you would be very surprised
at how easily it finds its way onto the recording, microphones are
very sensitive. I'll never get it to 0db but nonetheless the ductwork
is usually the biggest source for transmitting the fan noise.

"windcrest" wrote in message
news:49c5075e-d1ce-4302-8530-

That all depends on one's tolerance level. I have a house full of
musicians living here (me, kids, wife, and my oldest ones band)...
Try recording sound with a furnace runing, you would be very surprised
at how easily it finds its way onto the recording, microphones are
very sensitive. I'll never get it to 0db but nonetheless the ductwork
is usually the biggest source for transmitting the fan noise.

Do you have physical shock mounts for the mics? Best to start there.


http://www.heilsound.com/pro/products/shock.php

RickH wrote:
A recent post on soundproofing reminded me to ask this....

I'll probably need a new furnace for this winter. I was thinking of
asking the installer to mechanically isolate the main duct hookups
(return and output) from the furnace. So that the vibration of the
fan does not transmit throughout the house ductwork. Also have the
furnace itself set on an isolation mat to prevent vibration
transmission to the floor.

Do any HVAC installers here have any experience doing this?

Would the installer simply use maybe a 6 inch length of large flex
duct to make the connections to the main ducts? Or is there a rubber
band of some kind that can be inserted to isolate the duct work from
the furnace? To achieve a vibration break.

I have an audio listening/recording studio, so would like to eliminate
the need to shut off the furnace when recording. Currently the
furnace transmits a fairly high amount vibration into the ducts. I'll
also be ordering the quietest furnace I can find.


Fiberglas duct board for HVAC duct is pretty quiet
and you may ask your HVAC installer if your blower
motor will run at the slowest speed setting without
overheating the combustion chamber in winter or
freezing up the AC evaporator during the summer.
Many of the more modern home HVAC systems have the
new electronically controlled variable speed air
handlers and they are very quiet. Other posters
have already mentioned flexible duct segments.
I have used anti vibration pads that can be cut to
size and are available at the HVAC supply houses in
my area:

http://www.vibrasystems.com/?EC=Product&ProductID=75

TDD

On Aug 1, 2:04*pm, wrote:
On Aug 1, 2:11*pm, "HeyBub" wrote:





RickH wrote:
A recent post on soundproofing reminded me to ask this....

I'll probably need a new furnace for this winter. *I was thinking of
asking the installer to mechanically isolate the main duct hookups
(return and output) from the furnace. *So that the vibration of the
fan does not transmit throughout the house ductwork. *Also have the
furnace itself set on an isolation mat to prevent vibration
transmission to the floor.

Do any HVAC installers here have any experience doing this?

Would the installer simply use maybe a 6 inch length of large flex
duct to make the connections to the main ducts? *Or is there a rubber
band of some kind that can be inserted to isolate the duct work from
the furnace? *To achieve a vibration break.

I have an audio listening/recording studio, so would like to eliminate
the need to shut off the furnace when recording. *Currently the
furnace transmits a fairly high amount vibration into the ducts. *I'll
also be ordering the quietest furnace I can find.

Instead of setting the furnace on an isolation mat, consider hanging it from
the rafters with springs. Any vibration will be transmitted to the outer
walls via the rafters.- Hide quoted text -

- Show quoted text -

If a brand new furnace has so much vibration that isolation is needed,
something is very wrong. * In other words, nothing other than a normal
install should be needed.- Hide quoted text -

- Show quoted text -

No, not necessarily. Vibrations or buzzing sounds can be transmitted
thru sheetmetal ducts ; when possible, duct isolation is preferred.
Some people arent bothered by it, but, potential Buyers of the home
down the road might be .

On Aug 1, 4:38*pm, "Bob M." wrote:
"windcrest" wrote in message
news:49c5075e-d1ce-4302-8530-

That all depends on one's tolerance level. *I have a house full of
musicians living here (me, kids, wife, and my oldest ones band)...
Try recording sound with a furnace runing, you would be very surprised
at how easily it finds its way onto the recording, microphones are
very sensitive. *I'll never get it to 0db but nonetheless the ductwork
is usually the biggest source for transmitting the fan noise.

Do you have physical shock mounts for the mics? *Best to start there.

http://www.heilsound.com/pro/products/shock.php

Of course. The noise is in the air, the air sound alone is picked up,
the additional duct sound is aded on top of that. Shock mounts for
mics keep the mics themselves isolated from their stand and the floor
vibration, they do nothing for actual noise in the air.

On Aug 1, 12:29*pm, RickH wrote:
A recent post on soundproofing reminded me to ask this....

I'll probably need a new furnace for this winter. *I was thinking of
asking the installer to mechanically isolate the main duct hookups
(return and output) from the furnace. *So that the vibration of the
fan does not transmit throughout the house ductwork. *Also have the
furnace itself set on an isolation mat to prevent vibration
transmission to the floor.

Do any HVAC installers here have any experience doing this?

Would the installer simply use maybe a 6 inch length of large flex
duct to make the connections to the main ducts? *Or is there a rubber
band of some kind that can be inserted to isolate the duct work from
the furnace? *To achieve a vibration break.

I have an audio listening/recording studio, so would like to eliminate
the need to shut off the furnace when recording. *Currently the
furnace transmits a fairly high amount vibration into the ducts. *I'll
also be ordering the quietest furnace I can find.

How about going in a different direction. If you don't also need A/C
then how about a small boiler and radiator, or hydronic floor in the
music studio. Or even electric underfloor just for the studio.

David

I've seen, and helped use some black flexible stuff, don't
know the name of it. Also not sure how well it works as
sound deadener. The air blowing through the vent grilles
will also make some noise.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
..


"RickH" wrote in message
...
A recent post on soundproofing reminded me to ask this....

I'll probably need a new furnace for this winter. I was
thinking of
asking the installer to mechanically isolate the main duct
hookups
(return and output) from the furnace. So that the vibration
of the
fan does not transmit throughout the house ductwork. Also
have the
furnace itself set on an isolation mat to prevent vibration
transmission to the floor.

Do any HVAC installers here have any experience doing this?

Would the installer simply use maybe a 6 inch length of
large flex
duct to make the connections to the main ducts? Or is there
a rubber
band of some kind that can be inserted to isolate the duct
work from
the furnace? To achieve a vibration break.

I have an audio listening/recording studio, so would like to
eliminate
the need to shut off the furnace when recording. Currently
the
furnace transmits a fairly high amount vibration into the
ducts. I'll
also be ordering the quietest furnace I can find.