In October 2017, the Department of Energy implemented a new test procedure to determine the BTU rating of portable air conditioners. The procedural change has adjusted the amount of BTUs allowed to be claimed downward by as much as 50%. There have been no internal changes to these units, and the functionality remains the same. Please refer to room size guidelines to find the portable air conditioner that best meets your needs.Cools room area up to 450 sq. ftDehumidification up to 86.3 pints per 24 hoursAuto-Evaporation System241 CFM powerful air flowQuiet operation (52 dbA)Continuous drain system with included drain tube for dehumidifying modeMultiple Fan Speeds: High, Medium, LowFan only mode option gently circulates air even when air conditioner cooling is not neededAir vents automatically Open/Close on On/OffProgrammable Timer (Set to turn ON/OFF in advance from 1 to 24 hours)Smooth gliding castor wheels easily roll unit from room to roomWashable filter that helps catch unwanted dust particles in the airWindow venting kit with exhaust hose included for quick and easy setup