Hello, we live in a 30 year old house which has a chimeny that vents for the fireplace and a separate vent for the furnace.
I was told by the chimeny sweep that there should be a metal liner installed on the furnace exhaust(some kind of bylaw in Ontario, Canada,true or not?)
Well, i can see that there is a clay liner sticking out from the top, and i imagine it goes all the way down. Is that not sufficient? Is it diificult to install a liner? Is it expensive? Is it available at the local Homedepot?
........and it's HOT up here!