Small household dehumidifier works great on my ride. When at the dock at the house, I just dump the bucket once a day. When I am away from the boat, I set up a hose where it piddles into the head sink or aircon sump. It uses much less power than leaving the AC on in dehum or AC mode. It tends to run at night when cooler temps increase RH number (not the same as moisture content, that remains constant with temp), and when sun warms the boat RH drops and machine goes idle. Perfect.
The desiccant type dryers need some sort of regeneration or replacement of the desiccant once moisture loaded. No such need on a refrigerant type.
Refrigerant typ runs about 200 bucks at a home store.
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