It's set to around 63, but i would prefer it a little colder. we have a wood burning stove that generates a TON of heat. It's in the living room with cathedral ceilings, so i put the ceiling fan on low and it moves the heat around the house.
We don't have it on all winter as lots of times it is in the 70's and 80's and we used the AC in the winter. We have had the heat on a few times this winter though and we keep it at 72.