Lennox 11W00 Piston Orifice Assembly Kit RFC - 0.067

The Lennox 11W00 is a genuine OEM piston orifice assembly kit designed for precise refrigerant flow control in Lennox HVAC systems. This RFC (Restrictor Field Control) kit features a 0.067-inch fixed-bore metering device that regulates refrigerant flow between the liquid line and evaporator coil, ensuring optimal system performance and efficiency.

Key Features:

• 0.067-inch calibrated orifice size for precise refrigerant metering
• Genuine Lennox OEM replacement part (part number 100484-16)
• Lightweight design at just 1.6 ounces for easy installation
• Maintains proper superheat levels to protect compressor
• Complete kit includes piston, Teflon ring, sticker, and wire hook tool
• Functions in both heating and cooling modes

This fixed orifice assembly serves as a reliable alternative to TXV systems with fewer moving parts for enhanced long-term field stability. Engineered specifically for Lennox equipment, the 11W00 ensures seamless integration with existing liquid line setups and helps prevent improper evaporator flooding. An essential component for routine HVAC maintenance and system optimization.