Their system is using a refrigeration compressor
to condense water onto the evaporator, then filters and RO. Seems RO alone would use less power then what they propose, on a boat
anyway. The System proposed would work
on land but is a little bit inefficient to be of use on a boat
The unit looks to make about .33 gallons per hour at 280 watts per hour (840 watts per gallon). In one day you'll make 8 gallons and use 6 kW (476 amps at 12.5V) of power to make that 8 gallons max, maybe less water if the humidity is low . Far far easier to use a standard water maker that makes 20 gallons per hour for about 100 watts per gallon.
Their ECO water thingy really is pretty inefficient. So if your on land just put in a little 200 psig RO system with filters and UV. It would in theory be great in the desert, except the desert air is really low in humidity.