Aftermarket Integrated/Permanent Dehumidifiers?

GordonThree,

I sometimes have to run a humidifier in my RV in mid winter. But it is MUCH colder here and much drier to start with.

pianotuna wrote:
What is needed is to keep the interior walls above the dew point. Opening a roof vent helps greatly with that. Opening a window adds the possibility of a chimney effect. The R.H. of the incoming air plummets when it is raised to a warm interior temperature.

That advice does nothing for me. I can have both roof vents and a big window wide open and still have condesate on the walls and windows.

The electric dehumidifier works like magic,

In very cold weather I'm either on shore power or running a generator full time, so the load on the batteries is minimal.

What is needed is to keep the interior walls above the dew point. Opening a roof vent helps greatly with that. Opening a window adds the possibility of a chimney effect. The R.H. of the incoming air plummets when it is raised to a warm interior temperature.

You will have moisture in cold weather no matter what. Pay special attention to outside walls, back of closets etc where air doesn't circulate well.

well, the AC unit is a dehumidifier, but that's likely not an option in the winter.

I'd go with a portable compressor unit that also has a drain fitting and just have it drain into the grey tank or on the ground.

never heard of a built in dehumidifier for a trailer. I suppose they probably exist as part of an HVAC system for a big 5R or class A?

Get a 90+ pint compressor driven free standing unit. Plumb the drain through your floor (with heat tape), so you don't have to worry about emptying the bin every few days.

Mine works great in the winter, and in the summer - helps the rooftop AC work better when it's muggy. Even without drying clothes, just me and the dog would steam up my little trailer in no time just by breathing / sweating.

Edit: the do exist, but wow the cost!

Aprilaire inline dehumidifier


Just plumb that into your duct system I guess?