I wanted to build this heat exchanger to reclaim some of the heat that is lost up the chimney of my wood stove. I use the wood stove to heat my workshop during the winter months . I have seen heat exchanger units available in stores for around $160. Since I'm cheap, and I hate to pay money for things that I think I can build myself, I set out to create my own heat exchanger.
Original 1941 COKE Coca Cola Factory Issued Promotional Art Deco Clock. Back in the Day Classics