Maximize System Efficiency, Maximize System Control The 0018e ® ECM High-Efficiency Circulator featuring Bluetooth is a versatile, variable speed, high-efficiency wet rotor Circulator with an ECM permanent magnet motor. Download the Taco 0018e ® ECM High-Efficiency Circulator Mobile App to see and control real-time system performance. Run system operation & validation reports including performance diagnostics & history. Know the most efficient setting based on real-time feedback and alleviate the problems of over-pumping. You design systems with precision. The 0018e ® ECM High-Efficiency Circulator offers the performance and control to match.