donrae
Rest in Peace -2017
I think the reason you've mostly heard from folks that don't heat their coops is because most folks just don't heat their coops. The idea that chickens need supplemental heat at 40degrees is frankly ridiculous. Chickens are livestock animals, even though lots of folks want to make them pets, and as livestock are designed to tolerate even freezing cold temps during the winter. Instead of trying to market an unnecessary product, I'd focus more on the incubator and brooder ideas. Those are the birds that need heat and/or light.