We have four of these permanently mounted in various locations in the coach. Some are 300 and the others 500 watt. They provide even quiet heat throughout the coach. If the coach is cold (mornings or after being away for a bit) we will bring the coach up to temp with the two propane furnaces and then us electric to maintain. We also have under laminate heated floors. It all makes for dead quiet very even heat. It was fairly easy getting them all wired in using mostly existing circuits. They are spread fairly event over three circuits.