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Posted by Rob Lund on November 20, 2008 at 12:17:47:
I have an 80 year old boiler that has a 12" dia exhaust duct going into a chimney. Does any one make an inexpensive air to air heat exhanger that would fit into this duct to recover the heat from the exhaust. I would like to use it to heat the basement. It could be nothing more than a duct with some pipes in it that could be blown thru to utilize the heat in the exhaust.
thanks