my parents have a house on the vineyard that isn't winterized, when i use it in the late fall and early spring i have been using a kerosene heater. i just got it last year, but it worked amazingly well. most of the fall wasn't that bad but that first weekend in november was super cold and that heater kept my girlfriend and i toasty...not that she didn't kee me warm enough
why are you afraid to use it?