The Lennox 71L17 is an OEM replacement pressure switch tubing designed to maintain accurate and dependable pressure sensing in Lennox heating and cooling systems. Proper pressure switch tubing is critical to safe furnace and air handler operation — it channels pressure signals from the draft inducer or heat exchanger to the pressure switch, allowing the control board to verify safe operating conditions before ignition is permitted.
Key Features
- Genuine Lennox OEM replacement part (SKU: 71L17)
- Designed for precise fit and function in compatible Lennox systems
- Maintains reliable pressure signal transfer between inducer and pressure switch
- Helps prevent nuisance lockouts caused by cracked, kinked, or deteriorated tubing
- Durable construction for long-lasting performance in demanding HVAC environments
- Direct replacement — no modification required
Application
This pressure switch tubing is used in Lennox furnaces and air handling equipment where the draft inducer pressure switch circuit must remain intact and leak-free. Cracked or collapsed tubing is a common cause of pressure switch faults and no-heat calls. Replacing worn tubing with the correct OEM part restores proper system diagnostics and safe ignition sequencing.
Why Choose OEM Lennox Parts?
- Engineered to Lennox factory specifications
- Ensures compatibility with existing pressure switch and inducer assemblies
- Supports accurate system diagnostics and safe operation
- Reduces callbacks and repeat service visits
