Weil McLain 511-624-402 Pressure Switch Els PW 17895 Direct replacement for part numbers

Direct replacement for part numbers P441-1146

Contractor-Grade Durability: Built to withstand extreme outdoor temperature fluctuations and moisture exposure

this sensor triggers the defrost sequence to prevent excessive ice buildup that can choke airflow and degrade system efficiency

providing superior tamper-resistant protection compared to plastic alternatives

a replacement is necessary to ensure reliable furnace troubleshooting

Weil McLain 511-624-402 Pressure Switch Els PW 17895 Direct replacement for part numbersThe Weil McLain 511 624 402 Pressure Switch is an essential safety component specifically engineered for induced draft combustion systems. Calibrated to a 1. 48" WC setpoint, this SPST (Single Pole Single Throw) switch monitors the differential pressure across the inducer motor to ensure the venting system is clear of obstructions before ignition. This HVAC pressure switch features a dual 1 4" barb connection for easy integration with standard