TRANE OXBOX Thermal Expansion Valve Kit 4AYTXVH3G4248A

TRANE OXBOX Thermal Expansion Valve Kit 4AYTXVH3G4248A

Optimize your HVAC system’s performance with the Trane 4AYTXVH3G4248A Thermostatic Expansion Valve (TXV) Kit. Designed specifically for 3.5 to 4-ton air conditioning and heat pump systems using R-410A refrigerant, this high-quality TXV kit delivers precise refrigerant flow control for maximum efficiency and comfort.

Key Features

• Precise Superheat Control: Maintains optimal refrigerant flow into the evaporator coil for consistent performance across varying loads.
• Non-Bleed Design: Prevents refrigerant migration during off cycles, improving system reliability and efficiency.
• R-410A Compatibility: Engineered exclusively for modern R-410A systems.
• Durable Construction: Robust build ensures long-lasting performance and resistance to wear in demanding HVAC environments.
• Complete Kit: Includes everything needed for straightforward installation on compatible evaporator coils or air handlers.
• OEM Quality: Genuine Trane / RunTru / OxBox part for perfect fit and reliable operation.

Benefits

• Improved Energy Efficiency: Better refrigerant metering leads to higher SEER ratings and lower operating costs.
• Enhanced Cooling Performance: Provides more consistent temperatures and better dehumidification compared to piston metering devices.
• System Protection: Reduces risk of liquid slugging and helps maintain proper superheat, extending the life of your compressor and other components.
• Quiet & Reliable Operation: Minimizes fluctuations for smoother system performance.
• Easy Upgrade: Ideal as a required or recommended upgrade for many R-410A condensers and heat pumps.

Compatibility

This TXV kit is compatible with Trane, RunTru, and OxBox 3.5–4 ton evaporator coils and air handlers using R-410A refrigerant. Common matches include models such as:

• J4AH4P42A1C00AA, J4AH4P48A1C00AA, J4AH4E60A1C00AA
• Various J4AC4 and J4AC6 series combinations.

It serves as a direct replacement or upgrade for systems requiring a TXV for 3.5–4 ton capacity.

This TXV kit is the professional choice for HVAC technicians and homeowners seeking reliable, efficient performance from their 3.5–4 ton R-410A systems. Ensure your system meets manufacturer requirements and consult a licensed HVAC professional for installation.