especially tonight. Dont put setting on frost protection as I'v had stuff freeze up at the back of the van.
I always put fan heater on 2 setting to make sure ambient temperature circulates around the van.
A fan heater only checks it's thermostat temp.....not where it could be -2 near the backdoor.
Nothing worse than getting on a job to find out trigger valves are minced.
I once went away for xmas some years ago, put all my kit in the house except for the hoses.
-12 had punched a hole in one of the steel braided solution hoses :