The Lennox 25V04 uncoated aluminum upflow evaporator coil delivers reliable performance for 5-ton residential and light commercial HVAC systems. Engineered for use with R-454B refrigerant and built as a dedicated R454B TXV-equipped coil, this evaporator maximizes heat transfer efficiency while minimizing potential corrosion issues associated with early-generation refrigerants. The coil is uncased for flexible installation in upflow or vertical return applications and is optimized for compatibility with Lennox air handlers and furnaces.

This upflow coil features a thermostatic expansion valve (TXV) matched to 5-ton capacity, ensuring stable refrigerant flow and precise superheat control for improved comfort and energy efficiency. The all-aluminum coil construction provides superior corrosion resistance and durability in high-moisture environments compared to traditional copper-aluminum designs. Designed as a dedicated R454B system component, the 25V04 supports lower global warming potential refrigerant strategies without compromising performance.

Ideal for new installations or retrofit projects requiring transition to R454B refrigerant, this evaporator coil meets Lennox quality standards for reliability, consistent cooling performance, and long service life. Professional installation recommended to maintain system integrity and warranty compliance.

 

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