We purchased our furnace on 8/3/12 from Kauffman's Heat Source, received our Invoice or Bill of Sale on 9/21/12, after asking for it. We had already installed the furnace with the help of our friends by this time. We had a hard time deciding which type of unit to buy, but decided to buy from a local dealer. Two weeks ago our dealer called and said he would be over to fill out the warranty and get it sent in, we haven't seen him yet. At this point, we are considering getting a propane furnace put in and go that route and get completely out of the wood burning hassle. Maybe 22 years of it is long enough, really should have done it in the spring. In respect to the furnace, the only thing we did not do is replace our lines to the house, we hooked up to our existing lines, which had served us well during the past years. So, we could have some heat loss there, which might, and I say might, affect the units ability to keep the water temp up, hence using up so much wood. End of story. Thanks for listening.