This OEM York replacement part is factory-calibrated to a set point of -1

swapping in this Heil Quaker furnace part is the standard professional fix

As a specialized gas furnace replacement part

It must be mounted vertically with the system connection at the bottom to ensure the ball check functions correctly and prevents water-logging

this device detects alternating current (AC) flow in a single circuit without direct electrical connection

Lennox 13H37 Motor THPU32HP7Y This OEM York replacement partThe Lennox 13H37 blower motor is a genuine OEM 1 3 HP replacement motor designed for high performance air handling in specific Lennox residential and commercial units. Engineering for 208 230V single phase operation at 1075 RPM, this 4 speed induction motor provides the torque necessary to maintain static pressure across various duct configurations. As a 48Y frame motor with a 1 2 inch x 3 inch shaft, it ensures a precise fit for older high efficiency