The advice on hearth.com was bulletproof. I hooked up a fan in a cold room and blew it towards the stove room. Cold room warmed up in a matter of minutes where heat never flowed adequately before. The fan rests on the floor and is about 12 inches in diameter. It's moving the coldest most dense air down there, and worked very well. I had experimented with fans before but tried to blow warm air towards the cold room and had zero success that way.