Actually, they make exactly what you’re looking for! Make sure you use a high temp paint for behind the heater, otherwise you could be looking at a fire risk.

Go to your fav home supply store (Home Depot, Lowes, Ace whatever) Ask the paint dept for a radiator roller (they are usually really skinny, so they can fit between the heater and the wall) and while you’re there, pick up an extension rod (maybe 3 or 4 feet).

Talk to the experts there about what your options are.

Good luck!

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