Basement heating system

My roommates are baffled at how much time I spend in the basement of our rental house! However, on cold days like we’ve been having recently, it is the perfect little sanctuary, and our new home has a finished basement, with its own family room plus bathroom. If you can get past the big spiders, it also maintains the perfect temperature all year round; While the basement has its own thermostat for the oil boiler, I rarely need to turn it on. This is because the basement has its own fascinating manner of staying warm no matter how cold it gets outside. I assume it’s because it has almost no windows… Either way, the basement hangs onto the warm air from the oil boiler and never lets it go. When it’s undoubtedly bad, I turn the central oil furnace on for a half hour at most, then I immediately turn it off. In that short span of time, it can make the thermostat climb all the way to 65, which is more than warm enough for me. I don’t need to bury myself under a bunch of blankets, or throw on my new slippers to keep off the Winter chill. When I get sick and tired of the cold upstairs, I can go down to the basement and study a book or get some writing done. I never thought I would find myself being comfortable in a basement–I’m so used to them being musty plus gross–but this finished bonus room has me changing my mind, plus, it saves me from needing to turn up the oil boiler on the thermostat.