Description
Lennox 28W71 Defrost Ambient Sensor/Harness Overview
The Lennox 28W71 Defrost Ambient Sensor/Harness is a genuine OEM replacement component designed to maintain accurate defrost cycle operation in compatible Lennox systems. By continuously monitoring ambient temperatures, this sensor ensures the defrost control board receives the precise input it needs to initiate and terminate defrost cycles at the correct times — protecting system efficiency and preventing coil icing.
Key Features
- OEM Lennox replacement part — engineered to exact factory specifications
- Monitors ambient temperature to support accurate defrost cycle timing
- Includes integrated wiring harness for straightforward installation
- Designed for direct drop-in replacement in compatible Lennox heat pump and refrigeration equipment
- Helps maintain peak system efficiency and prevents coil freeze-up
- Durable construction for reliable long-term performance
Application
The 28W71 is intended for use in Lennox heat pump systems that utilize a defrost control board. The ambient sensor provides outdoor temperature feedback to the defrost control, enabling the system to determine when defrost is necessary based on real-world conditions. The pre-attached harness simplifies field installation and ensures a secure, factory-matched electrical connection.
Why Choose OEM Replacement Parts?
Using genuine Lennox replacement components like the 28W71 ensures compatibility, maintains system warranties, and delivers the performance reliability that aftermarket alternatives may not provide. Always verify compatibility with your specific Lennox model before installation.
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