Slightly tangential from the main point but I'm in a free rider position now I actually feel slightly bad about. I've moved into a row house and I'm in the middle apartment. My neighbours seem to like to live in an indoor sauna. It's now well into winter and I haven't had to turn the heat on. I've actually got the windows open to keep it around to around the 20 - 21 degrees I prefer. Not great but I don't know how I'd contribute without boiling alive.