When and where will you be using it?
A dehumidifier is just and air/con where both the evaporator and condenser are inside the living resulting in only a small increase in heat due to inefficiencies.
- If you are using the rig in even moderately warm weather turn on the air/con and it will dehumidify. Just set it to a comfortable temp, so long as it cycles occasionally, it will do the job.
- If it's in storage, in most places, it's not needed as there is a negligible temp difference inside vs outside to form condensation.
- If it's in storage, in a hot humid area (think south Florida in the summer), just set the air/con to 80-85F and it will dehumidify.
The problem situation would be in cold weather (sub 40F temps) while using he rig. Breathing, cooking, showering all adds a surprising amount of humidity. In this case a dehumidifier can be useful. As noted, it doesn't take long to fill the water container. If you can plumb a hose to gravity drain, that can be useful. Draining it to the shower is a marginal solution as it can quickly fill your gray tank if not on sewer. If you can feed a drain hose out thru the bottom of a slide seal, that would allow unlimited use.
Tammy & Mike
Ford F250 V10
2021 Gray Wolf
Gemini Catamaran 34'
Full Time spliting time between boat and RV