Lennox 10W96 Piston Kit

The Lennox 10W96 Piston Kit is a critical OEM metering device designed for RFC air conditioners and heat pump systems. Featuring a precision-machined .059 orifice size, this fixed-bore piston is specifically calibrated for 2-ton HVAC systems to regulate refrigerant flow with high accuracy. As a seasoned tech knows, maintaining the correct pressure drop across the evaporator is essential for system efficiency, and the 10W96 ensures your refrigerant flow control meets factory specifications. This kit is a direct replacement for the Lennox 100484-09 and is compatible with a wide range of Merit Series and 4HP13 models. Built with durable brass construction, it includes the necessary components to restore proper thermal expansion characteristics in residential cooling applications. Whether you are performing a seasonal tune-up or a full system repair, using this HVAC replacement piston ensures the 24,000 BTU capacity remains consistent without the hunting issues often seen in generic alternatives.

• System Compatibility: Specifically engineered for 2-ton Lennox and Armstrong RFC units requiring a .059 displacement.
• Optimized Efficiency: Maintains precise refrigerant metering to ensure the evaporator coil operates at peak thermal performance.
• OEM Reliability: Genuine Lennox 10W96 part ensures exact fitment, reducing the risk of leaks or bypass issues in the orifice housing.
• Robust Construction: Manufactured from high-grade materials to withstand high-pressure R-410A environments.

How do I verify if the .059 orifice is correct for my unit?
Always refer to the outdoor unit's technical data plate or the charging procedure sticker. A 2-ton piston kit typically uses the .059 size for standard air-to-air applications, but specific line set lengths may require adjustment.

Can this piston be used in heat pump applications?
Yes, the 10W96 is designed for RFC (Refrigerant Flow Control) systems, which include both straight-cool air conditioners and heat pump systems that utilize a fixed orifice as the primary metering device.

Does this kit include the Teflon O-ring?
Standard Lennox piston kits typically include the piston itself; however, it is professional best practice to inspect and replace the Teflon ring in the liquid line assembly during installation to prevent high-side leaks.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.