We started using an EVA Dry peltier dehumidfier this fall. It works great! Practical Sailor did a review a few months back of various methods of dealing with humidity. Of all the mechanical soluations, the peltier dehumidifiers came in tops in terms of energy use and noise (compared with compressor driven dehumidfiers). The article mentioned freezing issues if the air temp drops below the 50s or so, as I recall. It won't damage the unit, but they did suggest in cooler climates putting the dehumidifier on a timer so that it has time to defrost during part of the day (overnight being best as that is when it will be coolest). We also run an oilfilled radiator space heater in the winter.
