Silicone insulation can develop microscopic "pinhole" leaks over time

any modifications to the cable length can slightly alter resistance values

It will automatically close the circuit once the furnace temperature drops below 110

while the durable aluminum housing supports multi-positional mounting

Common Questions Is the pre-charge pressure adjustable

Lennox 63K93 Pressure Switch Els PW 17895 Silicone insulation can develop microscopicThe Lennox 63K93 Pressure Switch is a critical OEM safety component engineered for precise furnace pressure switch troubleshooting and replacement in high efficiency Lennox heating systems. This single pole single throw (SPST) switch is factory calibrated for an activation pressure of 0. 20" WC, ensuring the inducer motor maintains proper static pressure before the ignition sequence initiates. Featuring a dual 1 4" barb connection, it provides a