DESC: This Whynter SNO Arctica ARC-12D portable air conditioner in platinum, features the highest EER of all portable room air conditioners in its class - an amazing 12.63 EER. This unit features the advance self-Evaporating Technology, which uses and recycles moisture collected to produce cool air. The ergonomic design with an integrated handle and built-in caster wheels and large back wheels make this the easiest portable room air conditioner to transport. This unit can cool up to a 400 sq. ft. space.