International Comfort Products NAEA40701TX Thermal Expansion Valve Conversion Kit Ton - R-410A 4-5

The International Comfort Products NAEA40701TX is a thermal expansion valve (TXV) conversion kit designed to upgrade R-22 piston-style fan coils and air handlers to use R-410A refrigerant. This kit is engineered for 4 to 5 ton HVAC systems and provides precise refrigerant flow control for improved system efficiency and performance.

Key Features:

• Converts piston systems to thermostatic expansion valve (TXV) operation
• Compatible with R-410A refrigerant
• Designed for 4 to 5 ton capacity systems
• Sweat-type connections for reliable installation
• Works with International Comfort Products FEM4P fan coil model sizes 48, 49, 60, and 61
• Suitable for 2005-2009 R-22 fan coils and air handlers conversion

This conversion kit enables HVAC technicians to modernize older R-22 systems to work with the more environmentally friendly R-410A refrigerant. The TXV provides superior refrigerant metering compared to fixed orifice pistons, resulting in better system efficiency across varying load conditions. Installation requires HVAC certification and proper brazing techniques.