Breaking the performance barriers as the new category leader, the Dri-Eaz LGR 7000XLi (F412) removes more water than any other dehumidifier in the XL category. It uses Advanced Crossbow Technology to maximize energy utilization with multiple built in sensors to constantly monitor real time performance and automatically calculate ideal operating paramters, such as fan speed and defrost cycle duration. The newest LGR i-Series units include enhanced control systems to further improve performance. In addition they sport convenient new features such as grain depression and filter replacement reminders to help you keep your system at peak efficiency.