Mini Swamp Cooler (Arctic Air) - Legit?

Swamp coolers do add moisture to the air, Not remove it, that's why they work in dry climates, chill water systems used in commercial installations, isolate the cooling air from excess humidity, the water is circulated through the system instead of freon, then cooled in huge open ventilated structures to remove the heat, I'm not an A/C specialist and that's the best description I can give, there are residential versions based on the chill water system, the function much like a heat pump, but no Freon , and no added humidity, some friends had a swamp cooler system removed and the chill system installed,

Bumpyroad wrote:
I thought that real swamp coolers were mounted on the roof in dry climates with all removed moisture being vented to the outside and cold from evaporation being vented in???????????
bumpy