This our first winter in this house. We are heating with wood, a Lopi insert in the great room on the first floor, also open to the kitchen. I thought the heat would travel up the stairwell, but its not, its cold on the second floor. I tried running the gas furnace in fan only mode to circulate the air, but this actually made the second floor colder. I know that there is insulatiuon between the floors.
Why would running the fan make it colder on the second floor?