A portable, combination dehydrator, dry return air and condensed water generator/dispenser configured to reduce the humidity in a dry storage unit. In one embodiment, a system draws intake air from the dry storage unit across the condenser of a heat exchanger and condenses water from the air, collecting the water in a storage tank. The dried return air is ducted into the dry storage unit. In one embodiment, the source of the intake air may be selected from either the dry storage unit or an alternative source (e.g., outside air.) The selection of the intake air source may be based on the humidity of the air (e.g., if the humidity of the air in the dry storage unit is above a threshold, the dry storage unit is selected.) If both of the alternate sources of intake air have humidities below a threshold level, operation of the system may be suspended.
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