I'm going to have a bit of a #tech#rant (less charitable people might say #whine) here. If you just want jokes and cute bunny pictures, feel free to skip this one.
Object of my #ire this week? #Furnaces. I'm not even going to rant about their main control boards; most of that's been said better than I could say it, by others with more knowledge than I.
Things didn't change much for a long time. They went from being driven by a #belt and #pulley to direct drive, because that's a little more #efficient, and there's no belt to have to inspect and replace (or worse, snap in the middle of winter).
But as houses became better-sealed and #insulated, a couple of things became issues.
(1) Because the furnace wasn't running as much - not as much cold #air#leaking in, and #heat leaking out through the walls - the air stratifies.