Pay in 4 interest-free payments of $9.94 Learn more
Ships within 48 hours · Estimated delivery Aug 30 - Sep 4
reducing manual intervention on service calls
Engineering a reliable seal for hot and chilled water applications
Technicians should replace the suction line filter drier anytime the system is opened for service
allowing technicians to monitor accurate downstream pressure directly at the regulator during commissioning
Common Questions Does this kit work with the smaller 1/2" VG7000 valves
Lennox 59W40 Proving Switch THPU32HP7Y reducing manual intervention on serviceThe Lennox 59W40 Blower Proving Switch is a critical safety component designed for specific Lennox furnace models and air handling units. This negative pressure switch is calibrated to a precise . 15" WC setpoint, ensuring the inducer motor or blower assembly is generating sufficient draft before allowing the ignition sequence to proceed. As a genuine Lennox replacement part, the 59W40 ensures seamless integration with the existing control board
