This top-of-the-line Pinguino Professional PAC-290 is a totally self-contained unit that moves easily from room to room. This machine is the only one on the market that cools and super-cools. Filled with water, it "super-cools" at an optimal 100 percent level (8,500 BTUs) for up to 8 hours, yet it maintains a full 88 percent of its cooling capacity (7,500 BTUs) without water for uninterrupted use.