Advanced System Efficiency: Eliminates the need for external mechanical thermostats or bulky dual fuel kits by using integrated panel logic

Barbed Fittings for 1/4" OD Tubing

This specific outer window is primarily designed for PC-3D and PC-4D systems

By replacing the entire pressure change assembly

maintaining system safety and operational uptime without the risk of intermittent failures common in generic alternatives

Lennox 14M89 Tubing Kit 326058-758 Advanced System Efficiency: Eliminates theThe Lennox 14M89 Pressure Switch Tubing Kit is a critical replacement component designed for precise pressure monitoring within high efficiency Lennox furnace systems. This kit features high grade, flexible silicone tubing engineered to resist heat and maintain structural integrity under constant vacuum and positive pressure cycles. Proper furnace pressure switch calibration relies on the airtight fit provided by these OEM spec connectors, preventing