Amana-Goodman TX3N2 TXV

The Amana-Goodman TX3N2 is a professional-grade non-bleed thermostatic expansion valve (TXV) kit engineered for 2.5 to 3-ton residential and light commercial HVAC systems. This OEM replacement part is specifically calibrated for R22 service, providing precise refrigerant metering to the evaporator coil. Unlike fixed orifice systems, the TX3N2 TXV utilizes a power assembly and sensing bulb to maintain optimal superheat, protecting the compressor from liquid slugging while maximizing evaporator efficiency.

For technicians performing 14 SEER upgrades or maintaining legacy R-22 dry-charge units, this valve ensures stable operation across varying outdoor ambient temperatures. The non-bleed design prevents refrigerant migration during the off-cycle, which is critical for systems requiring high SEER ratings. This kit is a field-installed accessory compatible with both air conditioning and heat pump applications.

Key Benefits

• System Efficiency: Dynamically adjusts refrigerant flow to maintain precise superheat across a wide range of load conditions.
• Compressor Protection: Prevents liquid refrigerant from returning to the suction line, extending the operational life of the compressor.
• Standardized Compatibility: Designed specifically for Amana-Goodman 2.5 and 3-ton evaporators but versatile enough for various R22 HVAC systems.
• Energy Savings: Assists in achieving higher SEER ratings by optimizing heat transfer within the indoor coil.

Common Questions

Is the TX3N2 compatible with R-410A systems?
No, the TX3N2 is strictly designed for R22 refrigerant. Using this valve with R-410A will lead to improper metering and potential system failure due to different pressure-temperature characteristics.

Do I need a hard start kit when installing this TXV?
Yes, because the TX3N2 is a non-bleed TXV, it maintains a pressure differential between the high and low sides during the off-cycle. A hard start kit is highly recommended to provide the necessary torque for the compressor to start against this head pressure.

Can this be used on a 2-ton system?
This specific model is calibrated for 2.5-ton to 3-ton capacities. For a 2-ton system, you should verify if the internal orifice and spring rate are compatible, though usually a 2-ton specific valve is preferred to prevent hunting.

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.

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