Description
The Lennox 12J19 is an OEM thermostatic expansion valve (TXV) kit engineered specifically for 3-ton R410A residential and light commercial air conditioning systems. Designed as a direct Lennox replacement, this kit ensures accurate refrigerant metering and consistent superheat control to maintain peak system efficiency and protect the compressor from liquid slugging.
Product Overview
The TXV (thermostatic expansion valve) is a critical refrigerant-side component that regulates the flow of R410A refrigerant into the evaporator coil. By precisely controlling superheat at the evaporator outlet, the valve maximizes heat transfer efficiency, prevents compressor damage, and supports optimal system capacity. The Lennox 12J19 kit is designed for straightforward installation and is matched to the performance requirements of 3-ton Lennox A/C systems using R410A refrigerant.
Key Features
- OEM Lennox replacement TXV kit for assured fit and compatibility
- Designed for 3-ton R410A air conditioning applications
- Provides precise superheat control for maximum system efficiency
- Protects compressor from liquid refrigerant slugging
- Supports consistent cooling capacity and energy performance
- Complete kit format for simplified installation
- Compatible with R410A refrigerant — environmentally preferred HFC blend
Application
- Refrigerant: R410A
- System Capacity: 3 Ton
- System Type: Air Conditioning (A/C)
- Replacement Type: OEM Lennox
Why Choose the Lennox 12J19?
Using a genuine Lennox OEM TXV kit ensures the valve is calibrated to the exact operating parameters of your Lennox system. Aftermarket alternatives may not deliver the precise superheat settings required, potentially reducing efficiency or shortening equipment life. The 12J19 kit provides technicians with everything needed for a professional, code-compliant installation.
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