Trane 5TXCB004AS3HC Cased Evaporator Coil 36000-42000 Btu 3.0-3.5 Ton Multi-position R-454B

Product Description

The Trane 5TXCB004AS3HC is a cased, multi-position evaporator coil designed for residential split-system air conditioners and heat pumps. Rated at 36,000 to 42,000 BTU/h (3.0 to 3.5 tons), this coil uses an aluminum plate-fin construction and ships with a factory-installed non-bleed TXV for accurate refrigerant metering. It is rated for use with R-454B refrigerant and connects via brazed line sets with a 7/8-inch gas line and 3/8-inch liquid line. The B-cabinet width of 17.5 inches fits standard residential duct openings. Licensed HVAC technicians install and commission this coil as the indoor half of a split cooling or heat pump system.

This coil supports upflow, downflow, and horizontal airflow configurations, making it well suited for installations in closets, attics, basements, and utility rooms where orientation flexibility is required. It is intended for pairing with a compatible outdoor condensing unit or heat pump condenser in residential applications. The multi-position design reduces the need for separate coil SKUs across different install orientations on a single job site, which simplifies inventory for service contractors handling varied residential builds.

Key Features

• Aluminum plate-fin coil construction for corrosion resistance and efficient heat transfer
• Factory-installed non-bleed TXV for precise refrigerant flow control
• R-454B refrigerant compatible, meeting current low-GWP refrigerant requirements
• 4-way multi-position installation: upflow, downflow, horizontal left, and horizontal right
• Brazed refrigerant connections — 7/8-inch gas line, 3/8-inch liquid line
• B-cabinet width of 17.5 inches fits standard residential duct systems

Compatibility

Designed for use in residential split-system air conditioner and heat pump applications requiring a cased multi-position evaporator coil rated for R-454B refrigerant at 3.0 to 3.5 tons of cooling capacity.

Installation Notes

Installation must be performed by a licensed HVAC technician holding an EPA Section 608 certification, as this coil contains R-454B, a mildly flammable A2L refrigerant requiring appropriate handling procedures. Shut off all power to the air handler or furnace and recover any residual refrigerant before disconnecting line sets. Refrigerant connections are brazed; follow established brazing procedures and purge with dry nitrogen to prevent internal oxidation. Verify airflow orientation and duct connections match the selected coil position before startup.

Technical Specifications

• Cooling Capacity: 36,000 to 42,000 BTU/h (3.0 to 3.5 tons)
• Refrigerant: R-454B
• Coil Type: Aluminum plate-fin, cased A-coil
• Refrigerant Control: Factory-installed non-bleed TXV
• Airflow Configuration: Multi-position 4-way (upflow, downflow, horizontal left, horizontal right)
• Cabinet Width: 17.5 inches (B-cabinet)
• Gas Line Connection: 7/8 inch, brazed
• Liquid Line Connection: 3/8 inch, brazed
• Weight: 50 pounds

Standard Information

• Brand: Trane
• Manufacturer Part Number: 5TXCB004AS3HC