If the circuit is open at room temperature

Industrial Durability: Features a high-quality silicone diaphragm and a plated housing for 100

Streamlines solenoid valve electrical wiring for faster field integration and troubleshooting

it provides reliable psig (and kPa) readouts for main air pressure or pilot-operated output signals from pneumatic controllers

Industrial Build Quality: Constructed to withstand high-duty cycles and thermal stress within the furnace cabinet

Lennox 12W53 Pressure Switch Els PW 17895 If the circuit is openThe Lennox 12W53 Pressure Switch is a mission critical safety component engineered for HVAC draft verification in high efficiency gas furnaces. As an OEM Lennox replacement part, this switch is factory calibrated to actuate at 1. 52" WC (water column), ensuring the inducer motor maintains the precise static pressure required for safe combustion and proper venting. Designed with a durable SPST (Single Pole Single Throw) configuration, it prevents