Lennox 25W23 TXV Valve

For service technicians maintaining Lennox residential and light commercial equipment, the Lennox 25W23 TXV Valve (MPN: 100679-02) is a critical component for restoring nominal performance. This thermostatic expansion valve is specifically engineered for R-410A refrigerant systems, supporting a versatile 1.5 to 3-ton capacity. Utilizing a precise external equalizer, this valve provides accurate superheat control by monitoring evaporator outlet pressure, preventing liquid floodback and protecting the compressor from premature failure. Whether you are performing a refrigerant metering device replacement on a split system or an air handler, the OEM Lennox 25W23 ensures seamless integration with factory specifications. Its braze-on design and robust construction are built for high-duty cycles in demanding environments, offering the reliable flow regulation necessary to maintain optimal cooling efficiency and system balance across varying load conditions.

• Compatible with 1.5 to 3-ton units, providing flexibility for multiple Lennox air conditioner and heat pump models.
• Optimized for R-410A systems to ensure precise refrigerant metering and improved thermal efficiency.
• Features an external equalizer line for superior superheat adjustment and stable evaporator performance.
• Reduces compressor wear by maintaining the correct pressure drop and preventing liquid slugging during high-load periods.
• Genuine Lennox OEM part ensures exact fitment and high-grade durability compared to universal aftermarket alternatives.

What tonnage is the 25W23 TXV rated for?
This specific thermal expansion valve is designed for systems ranging from 1.5 to 3 tons, making it a common stock item for residential service trucks.

Does this valve support R-22 systems?
No, this valve is balanced and calibrated specifically for R-410A refrigerant. Utilizing this in an R-22 system will result in incorrect metering and potential system damage.

Is an external equalizer necessary for this installation?
Yes, this model utilizes an external equalizer to more accurately sense the pressure at the evaporator outlet, which is essential for high-efficiency systems with significant pressure drops across the coil.

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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.