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Lets talk insulation . . spray foams and blown types ~
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PeteMN
Posted 6/13/2009 13:09 (#743747 - in reply to #743681)
Subject: RE: Lets talk insulation . . spray foams and blown types ~


E.Central MN
I'm pretty sure that a fresh air intake to the furnace is required here in Minnesota. As houses get tighter and tighter it is necessary to prevent a negative pressure situation where the furnace could draw air back down the stack endangering the occupants of the house. With all of the concern about clean air it is a no-brainer to install an insulated duct to bring outside air in to fuel type furnaces and water heaters.
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