Right now as its not too cold out yet I have my latest batch out in the fermentation freezer in the garage. Temps have been in the 40’s so keeping the fermentation in the mid upper 60’s with an electric Sunbeam heating pad has been fine. Come dead of winter though Im not sure how well the heating pad will work. I use a small space heater at times but because of the high temp safety features built, in it kicks out when used in an small enclosure.
I think I kind of like the idea of a heat lamp the best…might have to try that as it gets colder in the garage.