Heat Controller Llc 26Z71 R454B Txv 3.5-4 Ton

Product Description

The HEAT CONTROLLER LLC 26Z71 is a thermostatic expansion valve (TXV) engineered for use with R454B refrigerant in residential and light commercial cooling systems. Rated for 3.5 to 4 ton capacity, this valve meters refrigerant flow into the evaporator coil to maintain the correct superheat across a range of load conditions. The 26Z71 is designed for installation in LE Series equipment and is the type of component installed by licensed HVAC technicians working on R454B-charged systems.

This TXV is intended for LE Series split systems or air handlers operating with R454B, a low-GWP A2L refrigerant increasingly specified in new residential and light commercial equipment. The 3.5 to 4 ton capacity range makes it suitable for mid-size residential applications. Installation is performed during new equipment commissioning or as a replacement when an existing valve has failed or is underperforming.

Key Features

• Rated for R454B refrigerant, a low-GWP A2L refrigerant for current-generation equipment
• 3.5 to 4 ton capacity range covers common mid-size residential system configurations
• Designed for LE Series equipment compatibility
• Provides precise refrigerant metering to maintain proper evaporator superheat

Compatibility

Designed for use with HEAT CONTROLLER LLC LE Series systems operating on R454B refrigerant in the 3.5 to 4 ton capacity range.

Installation Notes

TXV replacement and installation must be performed by an EPA Section 608 certified HVAC technician qualified to handle A2L refrigerants. Recover all refrigerant from the system before opening any refrigerant circuit. Follow the equipment manufacturer's service manual for brazing procedures, leak testing, and system evacuation before recharging. Verify superheat and subcooling readings after commissioning to confirm correct valve operation.

Technical Specifications

• Refrigerant Type: R454B
• Capacity Range: 3.5 to 4 Ton
• Series: LE Series

Standard Information

• Brand: HEAT CONTROLLER LLC
• Manufacturer Part Number: 26Z71