Exclusively for our readers, this NewAir 10,000 BTU Portable Air Conditioner and Heater (model AC-10000H) drops from $558.94 to $429.95 to $329.95 at Air & Water with the code BRADSAC, plus it ships free. This is the lowest price we could find on this unit by $40. It has a 4-in-1 design with AC, heater, cooling fan, and dehumidifier functions. It covers 325 square feet and was an editors pick for best portable AC unit. There is no sales tax (except CA).