On 30 Oct, 14:57, Mark wrote:
I have an insulated garage that I want to heat, but just above
freezing. All the heaters I have will keep the temperature at 14C
(57F) or higher, which I don't want. I just want it slightly above 0C
(32F) to avoid the objects in the garage from freezing.

Does anyone know of such a heater? I can't seem to find one.

Thanks!

That's easy...

Put a refrigerator in the garage and leave it open. The interior
temperature of a fridge should be around 40 degrees, so an open fridge
should keep the garage at 40 degrees year round.

QED :-)