Description
The Lennox 13Y21 is an OEM thermostatic expansion valve (TXV) engineered specifically for 5-ton outdoor air conditioning systems operating on R-410A refrigerant. Designed as a direct replacement for compatible Lennox equipment, this valve ensures precise refrigerant metering to maintain optimal system efficiency, protect the compressor, and deliver consistent cooling performance across a wide range of operating conditions.
Product Overview
Thermostatic expansion valves are a critical component in any split-system air conditioner or heat pump. The TXV automatically regulates the flow of liquid refrigerant into the evaporator coil based on superheat, preventing both flooding and starving of the coil. The Lennox 13Y21 is purpose-built for 5-ton outdoor applications using R-410A (Puron) refrigerant, making it an ideal OEM-matched replacement part for Lennox residential and light commercial systems.
Key Features
- Designed for 5-ton (60,000 BTU/hr) outdoor air conditioning systems
- Compatible with R-410A (Puron) refrigerant
- OEM Lennox replacement part — ensures proper fit and function
- Thermostatic operation automatically adjusts refrigerant flow based on superheat
- Helps protect the compressor from liquid slugging and refrigerant flooding
- Supports peak system efficiency and consistent cooling capacity
- Direct replacement for compatible Lennox outdoor condensing units
Application
- Lennox outdoor split-system air conditioners and heat pumps
- 5-ton residential and light commercial cooling systems
- R-410A refrigerant systems
Why Choose an OEM TXV?
Using a genuine Lennox TXV replacement ensures compatibility with factory specifications, preserving system efficiency ratings and equipment warranties. Aftermarket substitutes may not deliver the precise superheat calibration required for optimal performance in Lennox equipment.
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