I've read quite a bit of similar comments regarding my situation on other forums. It seems it is not an isolated issue to me. here it is: several of us quad 1200 have come to think that it takes a lot of time for the distribution fan to kick in and move the nice hot air into the room. several people indicated close to half an hour, and mine is about 15 minutes. It is related to the snap disc on the rt side of the stove near the bottom of the exchanger tubes, clearly visible upon opening the side door. (rt hand side while viewing the bay window front of stove). what seems strange is that it has been designed to kick in at about 140F and it takes a long time for that particular end of the stove to reach that temp. Meanwhile,...on the left side of the stove the temperature is piping hot. so,...I experimented a bit. I started the stove and waited till a warm glow was coming off the left outlet vent, about 5 minutes of flame action. Then I used a hair dryer to trick the snap disc into action. Bingo! off it went and the fan started distributing air. what happened next was the strange part. The rt hand side where the disc is situated, blew almost cool air while the left hand side blew out quite hot air already. firstly, why would it be so varied from side to side? ( by the way, my stove is exquisitely clean) secondly, could this not be a hazard if the left side got way too hot, while the right side slowly meandered up to 140F? thirdly, why harbor heat in the stove where it could only damage stuff, when it could be already heating the room? I proposed to myself to get a 100F snap disc and try that instead, but don't like the idea of modification, yet I reason that getting the heat out could only be safer. (right??). I decided to bounce it off of other quad 1200 users and maybe a qualified techie who may read this, before trying anything.