When performing annual maintenance or a heat exchanger inspection

making it fully compatible with newer R407C refrigerants while maintaining support for R22 service applications

Verified Technical Terminations: Features butt-splice connectors and a #10 ring terminal to ensure a fast

the switch is faulty and requires replacement

allowing for seamless adaptation to various manifold configurations

Lennox 59W74 Pressure Switch 319852-301 When performing annual maintenance orThe Lennox 59W74 Pressure Switch is a critical safety component engineered for precision monitoring of inducer motor performance and flue draft integrity. This OEM Lennox furnace pressure switch transitions at a fixed set point of . 80"wc, ensuring the combustion process only initiates when proper negative pressure is established. Featuring a Single Pole Single Throw (SPST) configuration and dual 1 4" barb connections, this switch provides a reliable