Some people seem to like cold bedrooms, but it's far from universal. I try to keep mine around 27C in the winter (at the bed level, as measured by a small digit

Some people seem to like cold bedrooms, but it's far from universal. I try to keep mine around 27C in the winter (at the bed level, as measured by a small digital thermometer), and I still have to cover myself with a blanket (although a relatively thin one). Now I'm wondering how the comfort varies with the temperature of the walls (due to infrared radiation), which are obviously much colder in the winter than in the summer.