Anyone recommend a good electric space heater? While out this past week temps dropped into the high 20's. Had a couple smaller heaters and had a hard time keeping the RV warm. Used the RV heater if it got below 63*. Went to Wally world and bought a Honeywell radiator type heater for large rooms, but it barely worked and only if you were within 5' of it. Still had to run another heater to keep the room warm. Returned it for a refund, so will be out looking for another one.