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Insulating gas furnace warm air vent

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Insulating gas furnace warm air vent traveller2k 02-12-2007
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Posted by Steve Scott on February 13, 2007, 7:51 am
Do they sell the wrap you're talking about in your area that's UL
listed for use as a duct wrap/insulation? Haven't seen it around here
yet.


>> First identify, and distinguish, the flue and the duct. The duct
>> shouldn't get much hotter than 150 degrees F, so there are several
>> choices of insulation available, like fiberglass.
>>
>> But if you melted the "bubblewrap" (by the way, that's designed for
>> radiant barriers, not for what you did with it)
>
>Sorry slick, but foil/bubble/foil or foil/bubble/bubble/foil **IS** and CAN
>BE used for insulating supply/return ducts.


--
The first step to making a dream come
true is to wake up





Posted by on February 13, 2007, 11:31 am

>
>> traveller2k wrote:
>> > Hi,
>> >
>> > my gas furnace sits in the laundry room in the basement and there is a
>> > lot of heat that comes off the pipe the sends the hot air up into the
>> > house. I went to HD and asked about wrapping some form of insulation
>> > around the pipe. I was first told to use batting wrapped in plastic.
>> > Thought this was not going to work given the amount of heat that comes
>> > off the pipe. Of course I wasted money on that after seeing the
>> > batting turn brown and fall off the pipe (had it taped on with heat
>> > resistent tape). Went back and someone else provided me with a foil
>> > wrap that sandwiches bubble wrap - I think it had an R rating of 4.
>> > Went on easily but as soon as the furnace kicked on, the bubble wrap
>> > shrunk and is now just a piece of foil wrapped around the piping. Im
>> > starting to think this isnt meant to be. I have only found stuff
>> > online that talks about insulating the heating ducts but nothing that
>> > provides any info on insulating the actual pipe that comes out of the
>> > top of the furnace. Is there such a thing?
>> >
>> > Thanks.
>> >
>> > Traveller
>> >
>> First identify, and distinguish, the flue and the duct. The duct
>> shouldn't get much hotter than 150 degrees F, so there are several
>> choices of insulation available, like fiberglass.
>>
>> But if you melted the "bubblewrap" (by the way, that's designed for
>> radiant barriers, not for what you did with it)
>
>Sorry slick, but foil/bubble/foil or foil/bubble/bubble/foil **IS** and CAN
>BE used for insulating supply/return ducts.
>


post a link to the UL approval.

By code, it cannot be used on interior duct surfaces, Duct wrap yes,
duct liner NO.

I know of a very large duct cleaning company that installs the product
inside airhandlers and RTU's after performing their cleaning services.
Does not meet code in these applications.

Posted by on February 13, 2007, 1:21 pm

>
> >
> >> traveller2k wrote:
> >> > Hi,
> >> >
> >> > my gas furnace sits in the laundry room in the basement and there is
a
> >> > lot of heat that comes off the pipe the sends the hot air up into the
> >> > house. I went to HD and asked about wrapping some form of insulation
> >> > around the pipe. I was first told to use batting wrapped in plastic.
> >> > Thought this was not going to work given the amount of heat that
comes
> >> > off the pipe. Of course I wasted money on that after seeing the
> >> > batting turn brown and fall off the pipe (had it taped on with heat
> >> > resistent tape). Went back and someone else provided me with a foil
> >> > wrap that sandwiches bubble wrap - I think it had an R rating of 4.
> >> > Went on easily but as soon as the furnace kicked on, the bubble wrap
> >> > shrunk and is now just a piece of foil wrapped around the piping. Im
> >> > starting to think this isnt meant to be. I have only found stuff
> >> > online that talks about insulating the heating ducts but nothing that
> >> > provides any info on insulating the actual pipe that comes out of the
> >> > top of the furnace. Is there such a thing?
> >> >
> >> > Thanks.
> >> >
> >> > Traveller
> >> >
> >> First identify, and distinguish, the flue and the duct. The duct
> >> shouldn't get much hotter than 150 degrees F, so there are several
> >> choices of insulation available, like fiberglass.
> >>
> >> But if you melted the "bubblewrap" (by the way, that's designed for
> >> radiant barriers, not for what you did with it)
> >
> >Sorry slick, but foil/bubble/foil or foil/bubble/bubble/foil **IS** and
CAN
> >BE used for insulating supply/return ducts.
> >
>
>
> post a link to the UL approval.
>
> By code, it cannot be used on interior duct surfaces, Duct wrap yes,
> duct liner NO.


Exterior... as he was talking "insulating around the pipe"



Posted by on February 13, 2007, 12:24 am

> Hi,
>
> my gas furnace sits in the laundry room in the basement and there is a
> lot of heat that comes off the pipe the sends the hot air up into the
> house. I went to HD and asked about wrapping some form of insulation
> around the pipe. I was first told to use batting wrapped in plastic.
> Thought this was not going to work given the amount of heat that comes
> off the pipe. Of course I wasted money on that after seeing the
> batting turn brown and fall off the pipe (had it taped on with heat
> resistent tape). Went back and someone else provided me with a foil
> wrap that sandwiches bubble wrap - I think it had an R rating of 4.
> Went on easily but as soon as the furnace kicked on, the bubble wrap
> shrunk and is now just a piece of foil wrapped around the piping. Im
> starting to think this isnt meant to be. I have only found stuff
> online that talks about insulating the heating ducts but nothing that
> provides any info on insulating the actual pipe that comes out of the
> top of the furnace. Is there such a thing?
>
> Thanks.
>
> Traveller


Sounds like you're insulating your FLUE pipe...



Posted by Bubba on February 13, 2007, 8:29 am

>
>> Hi,
>>
>> my gas furnace sits in the laundry room in the basement and there is a
>> lot of heat that comes off the pipe the sends the hot air up into the
>> house. I went to HD and asked about wrapping some form of insulation
>> around the pipe. I was first told to use batting wrapped in plastic.
>> Thought this was not going to work given the amount of heat that comes
>> off the pipe. Of course I wasted money on that after seeing the
>> batting turn brown and fall off the pipe (had it taped on with heat
>> resistent tape). Went back and someone else provided me with a foil
>> wrap that sandwiches bubble wrap - I think it had an R rating of 4.
>> Went on easily but as soon as the furnace kicked on, the bubble wrap
>> shrunk and is now just a piece of foil wrapped around the piping. Im
>> starting to think this isnt meant to be. I have only found stuff
>> online that talks about insulating the heating ducts but nothing that
>> provides any info on insulating the actual pipe that comes out of the
>> top of the furnace. Is there such a thing?
>>
>> Thanks.
>>
>> Traveller
>
>
>Sounds like you're insulating your FLUE pipe...
>

Bingo!
Bubba

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