Just to say they aren't that good.
I've had one in my van all break but today my reel was frozen and so was all my trad gear inside the van. They don't spread the heat particularly well. Pump and boiler were fine as the tube was underneath them.
Thanks for that.
I was just about to get one to try. Think I'll just get a little oil filled radiator with thermostat.
I've got a fan heater that I use at the minute but last night I set the fiddly dial wrong and it was too low. Tried my pump today after everything thawed out and it's dead.
I've got a spare for tomorrow thankfully.