I have a small Danby fridge in our garage. It’s not really designed for garages. When the garage temperature drops below 10°C, the Danby fridge stops working, and the freezer compartment melts.I connected the wires properly to a plug-in with a ground wire. I put this unit behind the fridge, not too close to anything that would melt. I also put this unit on top of something nonflammable, so as not to burn any surface.The ambient warmth of this unit behind the fridge is exactly what was needed to keep the freezer and fridge working properly!