I Finally finished my woodchuck installation and fired it up. I love it, wished I wished I would have bought one sometime ago. I have been burning hours it for almost 24 hours now and it keeps my house in the low to mid 70's with almost no use of the draft blower. This was a budget installation of a used woodchuck 2900 with new 8" superpro pipe with through wall kit, new fire bricks, and new duct work to tie into exsting duct, and some rewiring on the furnace, coming in at just under $2000. So far I am very happy with it, I will just have to wait and see how much wood I go through.