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Michael
Insulating Between Heat/AC Unit And Concrete Wall
Michael

I have a small basement that I'm insulating with 2" extruded polystyrene insulation.   There is a smaller 1" gap behind the heat/air unit which I'm putting 1" insulation in.  I'm wondering if this will pose any problems when the heater (gas) is running.  I don't want the insulation to heat up, melt, burn, etc.

Pictures of what I'm doing are attached.

Anyone know of any issues with what I'm attempting?  If so, how can I unsulate this space safely?

 

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