It's finally gotten cold here, 22 outside at the moment. My Serenity is getting its first real workout and I've noticed something I hadn't noticed before last night. It's not nearly as hot as it's been getting inside now that it's colder out but last night (and even more so tonight) I noticed a cool breeze on my feet... I attributed it to the ceiling fan on reverse to help spread the heat out but, after shutting the ceiling fan off, it actually got more noticeable. I believe I finally have a noticeable convection current working. The cold air is rushing down the hall from the bedrooms... but the heat isn't going down the hall as I'd hoped it would, even with 2 fans helping. Oh well, 1 electric heater running is much better than the 3 I had running last winter.