International Comfort Products 1188131 1/2 HP ECM Motor High efficiency motor is designed for HVAC applications, including furnaces and air handlers. Works 208-230 volts, allowing for variable speed performance to benefit energy economy and airflow management. Adjusts motor speed to system loads, which results in reductions in energy consumption and noise. This is better for enhancing high quality indoor air and ensuring optimal temperature control, which makes it an essential element in residential as well as commercial HVAC systems, thus allowing for much lower energy costs and greatly quieter operation.