The energy-saving, lightweight Moving CoolerR is a portable air conditioner that isolates the condenser and evaporative air streams to produce a cooler, cleaner, dust-free environment, says the manufacturer. Less expensive than fixed-unit air conditioners, the portable coolers are available in 1, 11¿ 2, 31¿ and 5 ton capacities, and can supply primary or supplemental cooling for almost any location, the company says.