The AP-2500D Brushless DC Motor Large Volume HEPA Air Filtration System with PM2.5 Sensor provides all the power needed for large jobs, while being able to precisely control the speed to its lowest level for all day ultra-quiet operation in settings like classrooms, business, and in occupied facilities where noise level is important. All of this is accomplished through our revolutionary DC Brushless Motor, where power meets precision. While drawing only 8.0 Amps, and rated at 1800 CFM, the AP-2500D HEPA has the high volume air exchanges capabilities and ultimate versatility with its precise variable speed control. A new feature built-in the AP-2500D is our digital PM2.5 indoor air quality sensor. Color coded in green/orange/red with a digital readout to monitor your indoor air quality.Moving the AP-2500D is made easy with built-in handle and wheels. Includes a 25ft power cord and cord management is made easy with a built-in cord compartment. Lightweight for its size, the aluminum kick plate makes it effortless to tilt for easy mobility. The AP-2500D HEPA has all the attributes of your traditional large volume air scrubber for tough job sites, but with the technology advancements and ultra-quiet features to be used as an all-day HEPA filtered air filtration system.