For technicians servicing boilers

Thermal Durability: The high-purity silicon carbide design resists cracking and oxidative degradation

this switch maintains system integrity by detecting venting blockages or inducer failures

Safety Compliance: Prevents hazardous operation by monitoring the draft inducer vacuum and flue integrity

Indicators include excessive vibration in the furnace cabinet

Reznor 201159 Pressure Switch Els PW 17895 For technicians servicing boilersThe Reznor 201159 Pressure Switch is a critical OEM safety component engineered for precise combustion airflow monitoring in high capacity gas fired unit heaters. Calibrated to a specific 1. 40" WC (Water Column) set point, this SPST (Single Pole Single Throw) switch ensures the inducer motor maintains the necessary static pressure for safe flue gas venting before ignition. Featuring dual 1 4" barb connections for secure pneumatic tubing attachment,