Danby portable 4-in-1 home comfort systems are simply a revolutionary design. An air conditioner, dehumidifier, heater and 3 speed fan all in one, this model is built with unique technology that increases system efficiency and reduces energy usage. This smart device will keep spaces of up to 700 square feet as refreshing and comfortable as possible during the hot, sticky days of summer. In AC mode, this unit evaporates water generated which means no emptying heavy buckets. It can also operate strictly as a dehumidifier during the wet spring and fall seasons to help prevent mold and mildew growth. Opt for the 3 speed fan function to improve air circulation. With portable rolling castors, it truly is the ultimate in home comfort.