Description
Lennox 21L87 Thermostatic Expansion Valve (TXV)
The Lennox 21L87 is an OEM thermostatic expansion valve (TXV) engineered as a direct replacement for compatible Lennox heating and cooling systems. Designed to deliver precise refrigerant flow control, this TXV helps maintain optimal evaporator performance, system efficiency, and consistent comfort output.
What Is a TXV?
A thermostatic expansion valve is a critical refrigeration component that meters the flow of liquid refrigerant into the evaporator coil. By responding to suction line temperature and pressure, the TXV ensures the evaporator operates at peak capacity while preventing liquid refrigerant from reaching the compressor — protecting the system and extending equipment life.
Key Features
- OEM Lennox replacement part — engineered to factory specifications
- Precise refrigerant metering for optimized evaporator performance
- Helps maintain system efficiency and consistent cooling capacity
- Protects the compressor by preventing liquid refrigerant flood-back
- Direct drop-in replacement for compatible Lennox equipment
- Durable construction for long-lasting, reliable operation
Application
The Lennox 21L87 TXV is intended for use in compatible Lennox residential and light commercial HVAC systems. Always verify compatibility with your specific equipment model before installation. Consult the Lennox equipment documentation or contact a qualified HVAC technician for proper sizing and installation guidance.
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