Done for the year. Video: I winterized my AF.

brholt wrote:
I don't winterize as we like to use the camper in winter. Here in Seattle we don't get a lot of nights below freezing

Oil filled electrical heater and a fan to blow air down to the tanks in the basement works for us. (I can use either the basement fan by turning it on at the thermostat or I add a small electric fan to the vent by the converter to such the air from the basement.)

This ^^^^^^

We leave the WH on all year. The warmth from that, plus a small heater in the unit set at min, keeps everything unfrozen. If we're heading into a deep freeze (no, it doesn't happen very often) I'll turn on the basement fan and let it run too.