International Environmental 71159943 Actuator 318172-701 The Lennox Y4151 is a

The Lennox Y4151 is a professional-grade 2 Phase 3 Speed PSC Module designed to regulate Direct Drive Blower Motor performance in high-efficiency HVAC systems

This EB Series replacement housing is essential for technicians looking to eliminate mechanical rattling or air bypass issues in aging air handlers

protecting the appliance from backdrafting and potential gas spillage

this motor is rated for 1725 RPM (4-pole)

Replacing a drifted or open-loop temperature sensor with this genuine thermistor asy restores proper heat pump and air conditioner calibration

International Environmental 71159943 Actuator 318172-701 The Lennox Y4151 is aThe International Environmental 71159943 Actuator is a field proven 24V N C 2 position actuator designed for high cycle performance in HVAC fan coil units, air handlers, and VAV systems. This direct drive actuator operates with a normally closed (N C) configuration, ensuring the valve defaults to a closed state upon power loss to prevent uncontrolled flow. Engineered as a genuine IEC replacement part, this model is cross referenced with Erie