Radiator in the garage - without car

Dear homeowners,

we have a double garage next to the house and the large radiator in the garage is about 40 years old and is rusting at the fins. Of course, there are old valves on it, which means the heating circuit has to be drained in order to replace it.

We don’t put a car in there, but have bicycles, a refrigerator, garden tools, and junk inside.

Is it advisable to keep the radiator on because of frost (or will nothing happen) or simply have it disconnected?

I look forward to your statement.

Best regards, Monika

If the garage is not within the thermal envelope, disconnect the energy waster.

Thank you, what is a thermal envelope?

The thermal envelope is the insulated part of a house # roughly speaking. Garages are rarely included.