Description
The Lennox 29M10 is an OEM thermal expansion valve (TXV) engineered to deliver precise refrigerant flow control in Lennox cooling and heat pump systems. By continuously metering refrigerant into the evaporator coil based on real-time superheat conditions, this valve helps maintain optimal system efficiency, protects the compressor from liquid slugging, and ensures consistent comfort performance.
Key Features
- OEM Lennox replacement thermal expansion valve (SKU: 29M10)
- Meters refrigerant flow to maintain proper superheat at the evaporator outlet
- Helps protect the compressor by preventing liquid refrigerant flood-back
- Designed for direct OEM replacement — no modifications required
- Supports consistent system efficiency and reliable cooling capacity
- Built to Lennox quality standards for long service life
Application
The Lennox 29M10 TXV is intended as a direct OEM replacement part for compatible Lennox air conditioning and heat pump systems. Always verify compatibility with your specific Lennox equipment model before installation. Consult the equipment service manual for proper installation procedures, refrigerant type, and torque specifications.
Why Choose an OEM TXV?
Using a genuine Lennox thermal expansion valve ensures the valve’s operating characteristics — including bulb charge, superheat setting, and flow capacity — are matched precisely to your system’s design parameters. This preserves factory efficiency ratings, reduces callbacks, and extends the life of the overall refrigeration circuit.







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