Will a back up generator be ok running inside of an enclosed porch area or sun room with decent ventilation or are they better off left to run outside? Yes, I will certainly need a generator as winters here in Ohio can be quite cold and I don't think my snakes would last long in a 20 degree room if I were to lose power. Would a generator hooked up to small radiating heater from Wal-Mart that I'm currently using be enough considering cold outside temps that could reach sub zero? Thanks.