Lennox 86P21 SPDT Fan Relay 24V 18AMP

The Lennox 86P21 Single-Pole, Double-Throw fan relay part of the Lennox and similar HVAC systems. It is an electronic device that controls the running of the system’s fan The SPDT makes it possible for the relay to switch between two circuits to turn the fan on or off depending on signals from the thermostat or other control boards. This relay works on 60Hz standard frequency and can support up to 18A of current making it efficient for most residential HVAC fan motors. its a result by controlling the rotation of the fan the 86P21 relay helps maintain proper air circulation in the HVAC system.