The Lennox 16X36 1/2HP ECM 3.0 Motor Module is an electronic control component designed for compatible Lennox HVAC systems featuring electronically commutated motors (ECM). It works by regulating motor speed and electrical power to maintain appropriate airflow according to system requirements. This module is used in compatible Lennox packaged rooftop heating and cooling units, support... https://www.partshnc.com/16x36-lennox-1-2hp-ecm-3-0-motor-module