Thanks. We tend to use the burer to heat the house so it's on almost all day but the lounge is used in the evening. So the pan would be to start the fan well in advance of the lounge being used. Over a few hours I am ssre the ambient temperature in the liunge will increase.
Another door into the lounge would not work - that's where our sofa is, plus there is already a door only a few metres along the wall.