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reducing manual intervention on service calls
Can I use this motor to replace a 79J81
corroded units
Engineering a reliable seal for hot and chilled water applications
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
