this switch is the standard specification for maintaining Lennox furnace airflow safety and equipment longevity

High-Capacity Throughput: Optimized for larger commercial and residential boilers requiring consistent makeup water

While the 11W97 is specifically cataloged as a liquid line service valve

and premature failure due to excessive load

this line voltage thermostat handles up to 20A at 240V AC

Daikin-McQuay 403586901 Pressure Transducer Els PW 17895 this switch is the standardThe Daikin McQuay 403586901 Pressure Transducer is a critical component for maintaining precise refrigerant cycle monitoring in high pressure HVAC applications. Benchmarked for reliability in Daikin Applied systems, this sensor operates within a 250 400 psi range and provides a stable 1 5VDC output signal to the system controller. Designed to withstand the rigors of industrial environments, this HVAC pressure sensor ensures accurate head pressure