AirForcePOL I know you think I am a real ass and so does Willie. You didn't listen to me in the last post and I am sure you won't this time, but here goes anyway. Make sure you know what you are getting your self into before you spend your money. Number one have you ever cut a lot of wood ? Go out and cut a truck load and I don't mean an S10 chevy load either, I'm talking a 3/4 ton truck,all you can stack on it. Now go do this 30 more times and you have enough to get you through the winter. Also know that you have to feed the stove whether you want to or not or it will freeze up. If you get sick like the flu, tough, you still have to feed it. If you want to go somewhere in the winter, tough, someone has to feed the stove. If you run short on wood,tough,you still have to feed the stove, You said you wanted a warentee when you talked to me but in the above post you said you heard the warentee wasn't any good anyway. Well I never had to use the warentee but I am a welder by trade so I probably wouldn't have called them anyway. If the dealer is trying to sell you that cheapo bubble wraped pipe for $3.00 a foot, you better re think that. Good foam insulated under ground pipe run's between $9.00 and $13.00 a foot depending on where you buy it. Ross told you the truth about the unit's being welded on the outside and not the inside, I really don't know why they do it this way. This does not mean it will leak. All of these OWB's are basically the same, nothing more than a tank welded inside of another tank with a door. You build a fire and heat up water. Your Question about the fan, yes the fan comes on to rise the water temp to the preset you have programed into the electronic control. This stuff isn't rocket science, you build a fire and heat water. They are all over priced in my opinion. This is low tech stuff. Most of the people that buy one would be better off spending the money on insulation, better windows,a high efficiency furnace or what ever. The items I just mentioned will raise the value of your home. An outdoor boiler rising the value is questionable at best. And on one last note,no one is going to ban more insulation or better windows in your house. Probably a lot less arguments with the wife on how the money was spent too. One final note, if you want to heat a house , a garage and a driveway, you better get a lot bigger unit than the 4400.