Mueller Streamline 100000204 Mini Split Line Set

Product Description

The MUELLER STREAMLINE 100000204 is a pre-insulated mini split line set designed for use in ductless HVAC installations. The set consists of a 1/4-inch liquid line and a 1/2-inch suction line, both running 25 feet in length, with 1/2-inch insulation on the suction line to minimize heat gain and condensation. Line sets of this type carry refrigerant between the outdoor condensing unit and the indoor air handler. HVAC technicians use these sets during new mini split installations or when replacing damaged or undersized linework on existing systems.

This line set is suited for residential and light-commercial ductless mini split applications where the indoor and outdoor units are within 25 feet of each other. It is commonly installed in single-zone ductless systems serving bedrooms, additions, server rooms, and similar spaces. The 1/4-inch by 1/2-inch combination is among the most common line set sizes for smaller mini split systems in the 9,000 to 18,000 BTU/h capacity range.

Key Features

• 1/4-inch liquid line and 1/2-inch suction line in a matched pair
• 25-foot length suitable for typical single-zone residential installations
• 1/2-inch insulation on suction line reduces heat gain and condensation
• Pre-cut length simplifies job planning and material staging
• Compatible with common mini split refrigerants used in residential systems

Compatibility

Designed as an OEM-style replacement or new-installation line set for residential ductless mini split systems requiring a 1/4-inch liquid line and 1/2-inch suction line configuration.

Installation Notes

Installation should be performed by a licensed HVAC technician holding an EPA Section 608 certification for refrigerant handling. Power down and disconnect both the indoor and outdoor units before connecting or disconnecting any refrigerant lines. Avoid sharp bends in the copper tubing that could restrict flow or cause kinking. After connection, the system must be leak-tested and properly evacuated before charging.

Technical Specifications

• Liquid Line Diameter: 1/4 inches
• Suction Line Diameter: 1/2 inches
• Line Set Length: 25 feet
• Insulation Thickness: 1/2 inches

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: 100000204