Description
The Lennox 26Z70 is an OEM thermostatic expansion valve (TXV) engineered specifically for Lennox systems operating on R454B refrigerant in 1.5- to 3-ton capacity applications. As the HVAC industry transitions to lower-GWP refrigerants, the 26Z70 delivers the precise refrigerant metering required to maintain system efficiency, protect the compressor, and ensure reliable performance in modern R454B-based equipment.
Key Features
- Compatible with R454B low-GWP refrigerant
- Designed for 1.5- to 3-ton system capacities
- OEM Lennox replacement TXV for accurate refrigerant flow control
- Maintains optimal superheat for compressor protection
- Supports system efficiency and long-term reliability
- Direct OEM fit for compatible Lennox equipment
Application
The 26Z70 TXV is the correct OEM replacement for Lennox residential and light commercial split systems utilizing R454B refrigerant. Proper TXV selection is critical when servicing next-generation equipment — using the manufacturer-specified valve ensures correct superheat control, refrigerant charge management, and compliance with system design parameters.
Why Choose an OEM TXV?
An OEM thermostatic expansion valve is factory-calibrated to match the specific evaporator coil, refrigerant, and capacity range of your Lennox system. Substituting an incorrectly rated valve can lead to poor efficiency, compressor flooding, or premature equipment failure. The Lennox 26Z70 eliminates guesswork and ensures a code-compliant, warranty-safe repair.
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