Lennox 11U64 Pressure Switch 321894-709 using a factory-authorized heat exchanger

using a factory-authorized heat exchanger is the only way to maintain the original safety listings and performance curves of HVAC equipment like the GR6GD or GR8GD series

provided the pressure drop remains within the valve's operating range

System Longevity: Protects internal heat exchangers and burners from debris and dirty intake air

Designed specifically for International Comfort Products systems

This original equipment manufacturer harness features factory-terminated connectors that ensure a secure

Lennox 11U64 Pressure Switch 321894-709 using a factory-authorized heat exchangerThe Lennox 11U64 Pressure Switch (Cat # 11U64, Part # 104371 01) is a precision calibrated OEM furnace replacement part engineered for high performance draft verification. This 0. 65" WC SPST pressure switch is the direct substitute for the legacy 93W86 model, designed to monitor inducer motor performance and confirm proper airflow before the ignition sequence initiates. Built with brass terminals, fine silver contacts, and a stainless steel