I stayed at my sister's for a night and it was so warm in the room that I asked them what they kept their heat at. She said 66 degrees but that the rooms tended to be 68. I googled ideal room temperatures and they said room temperature is 68 - 77. I can't imagine keeping the house that warm in winter. It's true that their son was in a t-shirt, but I don't see a need to keep a house warm enough in winter to wear t-shirts.
So..............I'm asking around. What do you guys keep the thermostat set at in winter during the day and at night. How about in summer?