Description
The Lennox 12J20 is an OEM Thermostatic Expansion Valve (TXV) Kit engineered for use with Lennox 3.5- to 5-ton R410A air conditioning systems. Designed as a direct-fit replacement, this kit delivers precise refrigerant metering to maintain optimal system efficiency, protect the compressor, and ensure consistent cooling performance across a wide range of load conditions.
Why Upgrade or Replace Your TXV?
The thermostatic expansion valve is a critical metering device that regulates refrigerant flow into the evaporator coil based on superheat. A faulty or improperly sized TXV can lead to poor cooling capacity, compressor flooding, icing on the coil, or reduced system efficiency. Installing the correct OEM-matched Lennox 12J20 TXV Kit restores proper refrigerant control and protects your investment.
Key Features
- OEM Lennox replacement TXV kit for accurate, drop-in fitment
- Compatible with R410A refrigerant systems
- Rated for 3.5- to 5-ton air conditioning applications
- Designed to maintain precise superheat control for maximum system efficiency
- Helps prevent compressor damage caused by refrigerant flooding or overheating
- Supports reliable, consistent cooling performance across varying load conditions
Application
- Refrigerant: R410A
- System Capacity: 3.5 to 5 Tons
- Application: Air Conditioning (A/C)
- Replacement Type: OEM Direct-Fit Kit
Installation Notes
This TXV kit should be installed by a qualified HVAC technician. Proper installation includes verifying system refrigerant charge, checking superheat and subcooling after installation, and ensuring all connections are leak-free. Always follow Lennox service documentation and local codes when performing refrigerant system work.
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