Oxbox R-410A Thermal Expansion Valve Kit (Coil & Air Handler) - 3.5 - 4.0 Ton

R-410A Thermal Expansion Valve Kit (Coil & Air Handler) - 3.5 - 4.0 Ton The TXV Kit is intended only for use with specific models of the J4GXC/J4MXC coils and JMM4 air handlers. The Thermostatic Expansion Valve (TXV) Kit is used to increase the efficiency and ratings. Oxbox Limited Warranty 1 year: Complete replacement, no questions asked 5 years: Standard parts warranty 10 years: Compressor replacement