The Lennox 42W18 Solenoid Coil 24V is an electromechanical component designed to control the operation of compatible valves in Lennox HVAC systems. It functions by generating a magnetic field when energized with 24-volt power, enabling the opening or closing of the valve to regulate refrigerant or fluid flow. This solenoid coil is commonly used in air conditioners, heat pumps, and oth... https://www.partshnc.com/solenoid-coil-24v