Furnace Firebox Insulation Question - HVAC - DIY Chatroom Home Improvement Forum

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Old 09-13-2009, 04:55 PM   #1
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Furnace Firebox insulation Question


I have an oil fired, FHA furnace (Enterprise, mid '60s) in my garage and in the process of setting up for the heating season I wanted to check on the condition before starting up.

When I pulled the burner from the firebox a wad of insulation/packing dropped out. It looks kind of like dense fibreglass but is crumbly.

The insulation is in the space between the refractory pieces and the face the burner goes through into the firebox. It's also in the space between the refractory pieces and the steel outer firebox.

I pulled the cover off this area and it looks like some of the material is settled or missing and I have 2 questions.

1. What is the material, any chance it is asbestos? How would I know for sure?

2. Where could I find a replacement material and what would I be looking/asking for?




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