Mueller Streamline 100000222 Mini Line Set 3/8x5/8x25ft

Product Description

The MUELLER STREAMLINE 100000222 is a pre-insulated mini split line set designed for residential and light-commercial HVAC refrigerant systems. It consists of a 3/8-inch suction line and a 5/8-inch liquid line, pre-paired and factory-wrapped with 1/2-inch insulation. The 25-foot length covers typical wall-mount mini split installations without requiring field splicing. Licensed HVAC technicians install this line set to connect an outdoor condensing unit to an indoor air handler, keeping refrigerant lines protected and condensation-free during operation.

This line set is suited for ductless mini split systems where a compact, pre-insulated refrigerant line assembly is required. The 25-foot run accommodates standard residential installations where the indoor and outdoor units are located on the same or adjacent walls. The 1/2-inch insulation layer helps minimize heat gain on the suction line and reduces the risk of condensation forming on the exterior of the tubing in humid conditions.

Key Features

• Pre-paired 3/8-inch and 5/8-inch copper line set in a single assembly
• 25-foot length suitable for standard mini split installations without field splicing
• 1/2-inch factory insulation reduces heat transfer and condensation
• Designed for ductless mini split refrigerant circuit connections
• Compact mini line set profile fits standard line set covers and wall sleeves

Compatibility

Designed as an OEM-style replacement or new-installation line set for residential ductless mini split systems requiring 3/8-inch and 5/8-inch refrigerant line connections.

Installation Notes

Installation should be performed by a licensed HVAC technician holding an EPA Section 608 certification, as this component is part of a sealed refrigerant system. Shut down and lock out the system before connecting or disconnecting refrigerant lines. Avoid kinking the copper tubing during routing; use a proper tubing bender where directional changes are needed. Seal line set penetrations through walls per local building code requirements to prevent air and moisture infiltration.

Technical Specifications

• Suction Line Diameter: 3/8 inches
• Liquid Line Diameter: 5/8 inches
• Length: 25 feet
• Insulation Thickness: 1/2 inches

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: 100000222