More importantly, those units are only practical where the dewpoint STAYS below 65 degrees. Largo, FL (dewpoint currently = 74) is not one of those places, and neither is Chattanooga, TN ( dewpoint currently LOW at 68, after weeks above 70). The original poster is apparently from St Louis, MO(from IP address) where the dewpoint is 70 right now. That unit will not work well in ANY of those locations.

On the other hand, in Phoenix (dewpoint = 51) or Las Vegas (dewpoint = 41), those using could be used to create a COLD pool.