Lennox 26Z70 1.5-3 Ton R454B Thermostatic Expansion Valve

The Lennox 26Z70 is a thermostatic expansion valve (TXV) designed for residential and light commercial HVAC systems operating with R454B refrigerant. This valve is rated for systems ranging from 1.5 to 3 tons of cooling capacity, making it suitable for medium-capacity air conditioning and heat pump applications.

Key Features:

• Compatible with R454B refrigerant, a low-GWP alternative to R410A
• Capacity range: 1.5 to 3 tons
• Thermostatic expansion design ensures precise refrigerant metering
• Maintains optimal superheat for improved system efficiency
• Direct replacement for Lennox HVAC equipment

The TXV regulates refrigerant flow into the evaporator coil based on superheat, ensuring the system maintains peak efficiency across varying load conditions. This component is essential for proper system operation and helps prevent liquid refrigerant from returning to the compressor, which can cause damage.