Air & Water via Sears.com drops the price of this NewAir 14,000 BTU Portable Air Conditioner from $649 to$409 with free shipping, making this the best price we could find by $60. This portable AC unit cools rooms of up to 525 sq. ft., and it has a special refrigerant that is better for the environment. It also has an auto-on mode so it can get started cooling the room when you're not there, and it includes a remote control. Sales tax is charged in most states.