# Flammable Insulation in Furnace

**URL:** <https://forum.nachi.org/t/flammable-insulation-in-furnace/172662>\
**Category:** Misc. Discussion\
**Created:** [September 29, 2020, 11:06am UTC](https://forum.nachi.org/t/flammable-insulation-in-furnace/172662 "2020-09-29T11:06:34Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![melyussif](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/melyussif/32/182290_2.png) [@melyussif](https://forum.nachi.org/u/melyussif)\
**Post date:** [September 29, 2020, 11:06am UTC](https://forum.nachi.org/t/flammable-insulation-in-furnace/172662/1 "2020-09-29T11:06:34Z")

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I’m thinking I should call out this flammable insulation in the furnace. Do you guys concur.

 ![IMG_1429](https://global.discourse-cdn.com/internachi/original/3X/a/e/ae07673e7de83eb70fbf6856a0bd2df801c646fd.jpeg)  
Thanks,  
Mike

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**Author:** ![rlewis5](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/rlewis5/32/337040_2.png) [@rlewis5](https://forum.nachi.org/u/rlewis5)\
**Post date:** [September 29, 2020, 11:32am UTC](https://forum.nachi.org/t/flammable-insulation-in-furnace/172662/2 "2020-09-29T11:32:17Z")

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> [@melyussif](#):
>
> Do you guys concur.

No!..

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**Author:** ![melyussif](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/melyussif/32/182290_2.png) [@melyussif](https://forum.nachi.org/u/melyussif)\
**Post date:** [September 29, 2020, 11:35am UTC](https://forum.nachi.org/t/flammable-insulation-in-furnace/172662/3 "2020-09-29T11:35:17Z")

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What is it?

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**Author:** ![mgratton](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/mgratton/32/58251_2.png) [@mgratton](https://forum.nachi.org/u/mgratton)\
**Post date:** [September 29, 2020, 11:57am UTC](https://forum.nachi.org/t/flammable-insulation-in-furnace/172662/4 "2020-09-29T11:57:43Z")

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No, looks like glass fibre type.

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**Author:** ![mwilles](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/mwilles/32/181480_2.png) [@mwilles](https://forum.nachi.org/u/mwilles)\
**Post date:** [September 29, 2020, 12:05pm UTC](https://forum.nachi.org/t/flammable-insulation-in-furnace/172662/5 "2020-09-29T12:05:57Z")

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You may as well call out the flammable paper labels while your at it.

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**Author:** ![rkenney](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/rkenney/32/405447_2.png) [@rkenney](https://forum.nachi.org/u/rkenney)\
**Post date:** [September 29, 2020, 12:13pm UTC](https://forum.nachi.org/t/flammable-insulation-in-furnace/172662/6 "2020-09-29T12:13:41Z")

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You need to ask yourself, “If it was flammable why would the manufacturer have installed it in the first place?”

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**Author:** ![jjonas](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/jjonas/32/301755_2.png) [@jjonas](https://forum.nachi.org/u/jjonas)\
**Post date:** [September 29, 2020, 12:51pm UTC](https://forum.nachi.org/t/flammable-insulation-in-furnace/172662/7 "2020-09-29T12:51:59Z")

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What would you have them replace it with?

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**Author:** ![srechkin](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/srechkin/32/180448_2.png) [@srechkin](https://forum.nachi.org/u/srechkin)\
**Post date:** [September 29, 2020, 12:57pm UTC](https://forum.nachi.org/t/flammable-insulation-in-furnace/172662/8 "2020-09-29T12:57:41Z")

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No issue with the insulation. Better question is why there is a water/mineral stain below the vent connector.

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**Author:** ![lkage](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/lkage/32/347658_2.png) [@lkage](https://forum.nachi.org/u/lkage)\
**Post date:** [September 29, 2020, 1:25pm UTC](https://forum.nachi.org/t/flammable-insulation-in-furnace/172662/9 "2020-09-29T13:25:32Z")

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> [@melyussif](#):
>
> I’m thinking I should call out this flammable insulation in the furnace. Do you guys concur.

No… … …

> [@mgratton](#):
>
> No, looks like glass fibre type.

This…

> [@srechkin](#):
>
> Better question is why there is a water/mineral stain below the vent connector.