Description
Lennox 11Y31 5-Ton R-410A Expansion Valve
The Lennox 11Y31 is an OEM replacement thermostatic expansion valve (TXV) engineered specifically for Lennox cooling systems operating on R-410A refrigerant at a 5-ton capacity. Designed to deliver accurate refrigerant metering, this expansion valve maintains optimal superheat levels across varying load conditions, protecting the compressor and maximizing system efficiency.
Key Features
- OEM Lennox replacement expansion valve — ensures proper fit and function
- Rated for 5-ton system capacity
- Compatible with R-410A refrigerant
- Provides precise refrigerant flow control for consistent superheat management
- Helps protect the compressor from liquid slugging and overheating
- Supports peak system efficiency and comfort performance
- Direct replacement for compatible Lennox air conditioning and heat pump equipment
Application
This expansion valve is designed for use in Lennox residential and light commercial split-system air conditioners and heat pumps utilizing R-410A refrigerant. Always verify compatibility with your specific Lennox model before installation.
Why Choose an OEM Expansion Valve?
Using a genuine Lennox OEM expansion valve ensures the valve is calibrated to the exact specifications of your equipment. Aftermarket substitutes may not provide the precise flow characteristics required, potentially leading to reduced efficiency, comfort issues, or compressor damage. The Lennox 11Y31 restores factory performance and reliability.
Specifications
- Brand: Lennox
- Part Number: 11Y31
- Refrigerant: R-410A
- Capacity: 5 Ton
- Type: Thermostatic Expansion Valve (TXV)







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