blazenut Posted November 6, 2009 Report Share Posted November 6, 2009 Hey guys, this is the second time ive run into a high efficiency furnace that doesnt have its intake pipe (see pic) plumbed to the exterior of the home. Does this not allow the furnace to run as efficiently as possible? What would the concerns of having it installed this way? Any thoughts would help? Thanks in advanced. Click to Enlarge 37.99 KB Quote Link to comment Share on other sites More sharing options...
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