Mueller Industries MUE-61020250C Standard Line Set 25 Ft

Product Description

The MUELLER INDUSTRIES MUE-61020250C is a standard pre-insulated copper line set designed for residential and light-commercial HVAC applications. It ships as a matched pair: a 3/8-inch OD liquid line and a 5/8-inch OD suction line, each 25 feet long and covered with black elastomeric insulation rated for outdoor UV and weather exposure. The insulation features a durable polymeric jacket engineered to resist solar degradation and harsh weather conditions. The copper tubing meets ASTM B1003 and the assembly is UL Recognized to 700 PSI, making it suitable for standard-efficiency and high-efficiency split systems. A 10-year warranty backs the assembly.

This line set is intended for split-system and mini-split air conditioner and heat pump installations where the indoor air handler and outdoor condensing unit require a pre-cut, pre-insulated refrigerant circuit. The 25-foot length covers typical residential setups where the outdoor unit is mounted at grade or on a rooftop pad within a moderate distance of the indoor unit. Licensed HVAC technicians install this component during new construction, system replacement, or equipment changeover. The black Duraguard elastomeric insulation jacket is suitable for exposed exterior runs without additional UV wrapping.

Key Features

• 3/8-inch OD liquid line and 5/8-inch OD suction line in a matched 25-foot set
• Black elastomeric insulation with durable polymeric jacket rated for UV and outdoor weather exposure
• UL Recognized to 700 PSI for reliable high-pressure refrigerant service
• Copper tubing compliant with ASTM B1003
• Assembled in the USA with 10-year warranty coverage

Compatibility

Designed as an OEM-style replacement or new-installation line set for standard split-system and mini-split HVAC equipment requiring a 3/8-inch liquid line and 5/8-inch suction line configuration.

Installation Notes

Installation should be performed by a licensed HVAC technician in accordance with applicable mechanical codes. Recover all refrigerant and isolate the system before disconnecting any existing refrigerant lines. Avoid kinking the copper tubing during uncoiling and routing; use a tubing bender when tight bends are required. Flare or braze connections per equipment manufacturer specifications and pressure-test the line set before recharging the system.