That was the way it was at my house at Christmas. I just ran the fireplace that is at one end of the house while the family was here. Very warm in one room and cooler than normal in the other parts of the house. The temperature was about 20 deg F outside.
In the 15 years I have lived here it has only been cold enough during the holidays to use the fire place about 5 times. I only use it just for effect and not for heat. If I want heat I use the wood stove in the basement.