"JoeSpareBedroom" wrote in message
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"John91" wrote in message
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It's about my 40-yr old 2-storey house in midwest Canada. After taking
off part of basement ceiling, I found something weird with a heating
duct. It runs up from basement to main floor along an exterior wall
(built into the fiberglass insulation), and maybe further up to the
second floor, and to attic??? I'm sure no heating vent in the house uses
this duct. I just can't figure out where is goes. It sends hot air to
attic to do heating? possible for an old house?

please help solve the mystery. Thanks.



You said "to attic???" That's a question only you can answer. Have you
gone up in the attic to take a look?

good question. From the manhole, I treid to look at that direction and find
something with a flahslight. but hard to see as there's pretty thick
insulation. Don't want to crawl in there, I'm very sensitive to the fiber.

Separate question: On the 2nd floor, where are the heat vents? Floor?
Wall? Ceiling?

If it runs on the 2nd floor, must still be the rectangle shape duct, inside
the exterior wall. The hot air duct in basement changes to the rectangle
when turning up into the wall at the basement header.