Boomerweps wrote:
My only concern with using the electric heater and AirCon together is the amperage draw if both kick on at the same time. That can easily exceed your 30amp system.
I had to be too cold with the Air to keep the humidity down and not sweat in bed in my Wolf Pup last year. If possible temperature wise, a cracked window and a vent fan on works better. I did buy and use one off those electronic dehumidifiers. It helped some, not near as effective as a compressor type, but uses much less power. A compressor type D/H uses power similar to an AC unit. It will eat up most of your available power.
a compressor dehumidifer suitable for a RV will draw about 1-2 amps max, no where near what an AC uses. Ours draws less than 2 amps and will pull 5 gallons of water/day out of the trailer during humid fall/spring days at the coast. They are basically a VERY small unvented AC unit. room air passes over the cooling side to extract water, the heat side is just vented into the room.
The electronic dehumidifiers typically use a peltier device (semiconductor) , not very efficient, nor will they remove enough moisture if you are in a situation where the humidity feels high.