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mtheo · 12-12-2013, 08:00 AM

I would think the main disadvantage of putting a filter in the grate under my stairs is that the furnace would be more likely to pull return air from the basement and other non heated areas, instead of reheating indoor air.

12-12-2013, 08:00 AM	#23
mtheo Montana Master Join Date: Aug 2006 Location: merced Posts: 983 M.O.C. #6171	I would think the main disadvantage of putting a filter in the grate under my stairs is that the furnace would be more likely to pull return air from the basement and other non heated areas, instead of reheating indoor air.