This dual-setpoint pressure switch features an automatic reset function

There is no functional difference between these parts

providing heavy-duty switching for large inductive loads

the Trane BRG1578 Ball Bearing provides the factory-spec precision required to eliminate shaft vibration and friction

Lennox 19M54 Board Kit Els PW 29614 This dual-setpoint pressure switch featuresThe Lennox 19M54 Board Kit is a critical gas furnace ignition control replacement designed to upgrade older GCI 3, RAM 3MC5, and EGC 2 platforms to the more reliable GCI 3A (23L53) ignition control board. This comprehensive Lennox 19M54 conversion kit is essential for technicians servicing LF24 and LD24 Series unit heaters and duct furnaces. It ensures precise intermittent pilot ignition sequencing and system diagnostics, resolving common field issues