Utilizing a durable silicone diaphragm and a snap-acting switch rated for 15 amps

By providing electrical isolation between dissimilar metals

this blocked vent switch acts as a critical failsafe by measuring exhaust temperatures at the flue

Common Questions: How do I troubleshoot a Goodman furnace pressure switch stuck open

Lennox 81L75 Control Board Els PW 17895 Utilizing a durable silicone diaphragmThe Lennox 81L75 Control Board is a critical OEM component designed for precise fan speed regulation and airflow management in residential and light commercial HVAC systems. Also identified as the Lennox 81L7501, this fan control board functions as a direct fit replacement for Integrated Modular Control (IMC) systems, specifically engineered for the IMC C1 3 version. Built to handle the heavy duty demands of indoor blower motors, it ensures that your