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TurnThePage's avatar
TurnThePage
Explorer
Apr 06, 2019

How do I block a furnace outlet at the manifold?

My furnace pumps the hot air from a manifold with three exits into hoses which then enter into another manifold that disappears under the floor. There is some blockage down there that is not easily a...
wolfe10's avatar
wolfe10
Explorer
Apr 06, 2019
If you are just removing one of the other "furnace vent outlet covers", use the new one to cover the old one (at least on the furnaces I have worked on).

Worse case is buy a small sheet of aluminum from any box store, drill holes at the corners and screw it over the old hole. I would not trust any glued product in that high heat environment.

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