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The MUELLER STREAMLINE 100000207 is a pre-insulated mini split line set designed for residential and light commercial ductless HVAC installations. It consists of paired refrigerant lines — a 1/4 inch liquid line and a 1/2 inch suction line — in a 50 foot length, with 1/2 inch insulation covering the suction line. HVAC technicians use this line set to connect the indoor air handler to the outdoor condensing unit. The pre-cut length and factory insulation reduce field labor and help maintain system efficiency by limiting heat gain on the suction line.
This line set is suited for ductless mini split systems in residential homes, apartments, light commercial spaces, and new construction applications. The 50 foot run accommodates a wide range of installation scenarios where the indoor and outdoor units are separated by moderate distances. It is typically installed by licensed HVAC technicians during new system installation or when replacing damaged or undersized refrigerant lines on an existing ductless system.
Designed as an OEM-style replacement or new-installation line set for ductless mini split HVAC systems requiring a 1/4 inch liquid line and a 1/2 inch suction line configuration.
Installation should be performed by a licensed HVAC technician in accordance with applicable mechanical codes. Always recover any remaining refrigerant and isolate the system before disconnecting or replacing line sets. Avoid sharp bends when routing the copper lines to prevent kinking or flow restriction. Confirm that flare or braze connections are leak-tested before recharging the system with refrigerant.
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