Lennox 88K38 Air Sensor 323613-751 High-use damper assemblies often experience

High-use damper assemblies often experience vibration-induced wear on original collars

Common Maintenance Questions When should I replace the lower thermostat

In high-safety LP applications

from blocked flues to ignition failures

extending equipment longevity and maintaining high system efficiency without the need for complex electronic sensors or actuators

Lennox 88K38 Air Sensor 323613-751 High-use damper assemblies often experienceThe Lennox 88K38 Discharge Air Sensor is a critical diagnostic and control component designed for precise discharge air temperature monitoring in high performance Lennox HVAC systems. This OEM Lennox sensor (Catalog # 88K38 88K3801) is required for EVENHEAT operation in air handlers and is a central element of the iHarmony zoning system. By providing real time supply air temperature data to the control board or zone module, it allows for proactive