Although our Atwood propane
heater (the smallest one) has always worked flawlessly we needed a shore-powered heater with variable output for storage, etc. There was room under one of the front seats for one, and because the unit is zero-clearance there is no problem having it extend a few inches into a storage area under the seat.
This one has a super-quiet, full width squirrel-cage type fan in viscous bearings, has 6 settings from 250w to 1500 in 250w increments. There is an LED pilot light
. This particular model has no thermostat so I use what so many use, the Hunter digital thermostat from Walmart. I did have to wire in a small relay (12v to 120v), but this thermostat keeps the temperature within very close tolerances.
This unit has proven to be quiet, reliable, and very effective for us. It is really a marine unit, and I mistakenly ordered the stainless steel version and had to pay a high price for it. No regrets at this point.
The unit is called the "King Dial-A-Watt." (Model DAW 120v) and was ordered from the manufacturer, King Electric Mfg. Co. in Seattle.