Which dehumidifier do you use?

I've got a 25 gallon per day Frigidare I bought at Lowe's a few years ago. I'm going to add a drain tube to connect to that will penetrate the floor next to the low point drains for summer time storage use only The end of the tube under the trailer could ice up in extremely cold weather causing the flow to stop. For winter use I put the humidifier in the bathroom and run the hose into the tub. You might need to slightly elevate the humidifier to make sure the water runs into the tub. I open the gray tank valve to let it drain so the tub doesn't eventually overflow. It doesn't stay cold enough long enough for the grey water tank drain pipe to freeze up so the tank and tube don't fill up.

First of all, don't bother with the Eva-Dry dehumidifiers. Those are Peltier based, and get tablespoons of water out of the air, pretty much worthless.

Get yourself a compressor based dehumidifier that pulls pints out of the air, route the drain to the sink or bathtub, crack open the gray water valve and put a screen over it (so insects and critters don't go in), and call it done.