Description
The Trane 5AYTXVH3A4248A is an OEM thermostatic expansion valve (TXV) kit engineered specifically for systems operating on R-454B refrigerant at 3.5 to 4 ton capacities. Designed as a direct Trane replacement, this kit delivers precise refrigerant metering to maintain optimal evaporator performance, protect the compressor from liquid slugging, and support system efficiency across a wide range of operating conditions.
R-454B is a next-generation, lower-GWP refrigerant increasingly specified in new residential and light commercial equipment. This TXV kit is purpose-built to handle R-454B’s unique thermodynamic properties, ensuring accurate superheat control and reliable long-term operation in compliant systems.
Key Features
- OEM Trane replacement TXV kit — ensures proper fit and function
- Engineered for R-454B refrigerant compatibility
- Sized for 3.5–4 ton system capacities
- Provides precise superheat control to protect compressor integrity
- Supports peak system efficiency and consistent cooling performance
- Includes all components needed for a complete TXV replacement
Application
- Compatible with Trane residential and light commercial split systems using R-454B refrigerant
- Intended for 3.5 to 4 ton cooling capacity configurations
- Suitable for new installations and field replacement of worn or failed TXV assemblies
Why Choose an OEM TXV Kit?
Using a genuine Trane TXV kit ensures the metering device is matched to the system’s design specifications, avoiding the performance losses and warranty concerns that can arise from aftermarket substitutes. Proper refrigerant metering is critical to system efficiency, compressor longevity, and comfort delivery — making this kit an essential component for any qualified HVAC technician servicing Trane R-454B equipment.
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