Precise 33°F Calibration: The L65-33F specification ensures the system initiates defrost only when necessary

Common Questions Is the F29-0143 compatible with non-White Rodgers thermostats

the WG1600-11 is specifically rated for 125V 60Hz

Engineered with a large-diameter fused glass eyepiece

preventing edge-curl even under heavy steam exposure

Lennox 57M67 Pressure Switch Precise 33°F Calibration: The L65-33FThe Lennox 57M67 Pressure Switch is a high precision OEM component engineered for critical safety monitoring in gas fired furnaces and HVAC systems. As a veteran technician knows, maintaining the correct pressure threshold is vital for inducer motor verification and combustion safety. This SPST pressure switch is factory calibrated to actuate at 1. 71" WC (water column), ensuring that the exhaust blower is moving sufficient air before the ignition