Firstco 9-321-306 Evaporator Coil Assembly 4-Row 24-Fin R410A Heat Pump TXV

The Firstco 9-321-306 is an OEM evaporator coil assembly designed for R410A refrigerant heat pump systems. This 4-row, 24-fin-height, 16-inch long A-coil assembly is factory-equipped with a Heat Pump Thermostatic Expansion Valve (HP TXV) for precise refrigerant metering and efficient heat exchange performance in both heating and cooling modes.

Manufactured by First Co., a Dallas, Texas-based HVAC manufacturer with decades of experience in the multi-occupant HVAC industry, this coil assembly is built to exacting OEM standards. The coil features seamless copper tubing expanded into aluminum fins and brazed at all joints, housed in a formed galvanized steel channel frame casing.

Key Features:

• Configuration: 4-Row coil assembly with 24 fins per inch height and 16-inch coil length
• Refrigerant: R410A compatible
• Expansion Device: Heat Pump TXV (HP TXV) factory-included
• Construction: Seamless copper tubing with copper sweat connections
• Casing: Formed galvanized steel channel frame
• Pressure Rating: Tested at 350 psi air pressure; rated for 300 psig working pressure
• OEM Part Number: 9-321-306

This is a genuine First Co. OEM replacement coil assembly, ideal for restoring full system efficiency in compatible First Co. fan coil and air handler applications using R410A refrigerant.