Is the garage insulated and in use?
I'm in Calgary with an attached insulated garage. We don't have a heater of any sort in the garage, and nothing ever freezes in it. Heat transfer from the house and vehicle is always enough to keep it above freezing and melt snow/ice off of car overnight.
What about using a large cooler combined with a small heater?
I know some coolers can be very efficient at keeping temperatures stable. Some claim to keep ice solid for a week. Throw a small heater in and you may be set indefinitely.
|