I have typically had a boiler in my living room. I don’t know why, but my living room has typically been quite a bit chillier than the rest of my house. It is no fun trying to sleep in a cold living room, at least for me. I truly have a difficult time falling asleep when I am cold. I have friend’s who are exactly the opposite, plus they truly care about it to be cold in their living room at night. I have no idea how they do it, but they sleep better in a cold room. One of my friends even uses air conditioner during the winter months. I had no idea until he asked me to house sit one week, plus I stayed in his living room. I observed that there was an cooling system in the window, plus it was the middle of December. When he got back from his trip, I asked his if he wanted me to help his get the cooling system out of his window so that he would not lose heat through the window. She told me that he truly uses his cooling system throughout the winter months and the Summer months, and even though he has his heating system on, he likes just his living room to be extra cold, so he turns on his cooling system. I don’t know why he just doesn’t leave the window open, but he prefers to use his cooling system instead. I have to have a boiler in my living room, so I could not imagine using an cooling system in my living room during the winter months. I would really freeze.