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The LINESETS LINE004K0500L is a pre-assembled single refrigerant line set designed for mini-split and ductless HVAC installations. It features a 1/4 inch OD copper line with 1/2 inch wall insulation using K-Flex Titan jacketed material, a co-extruded composite combining NBR/PVC foam insulation with a polymeric outer jacket. This construction delivers strong resistance to abrasion, UV exposure, and weathering. Because the line set arrives fully assembled, field installation time is significantly reduced compared to building a line set from separate components. Licensed HVAC technicians use this product when running refrigerant piping from an outdoor condensing unit to an indoor air handler.
This line set is suited for residential and light commercial ductless mini-split applications where a single liquid or suction line run is required. The 50 foot length accommodates standard single-zone installation distances. The flexible K-Flex Titan jacket allows routing through walls, ceilings, and along exterior surfaces without cracking or stiffening in cold conditions. It is typically installed by licensed HVAC technicians following manufacturer line set routing specifications and local mechanical codes.
Designed as an OEM-style pre-assembled single line set for residential and light commercial ductless mini-split and inverter-type HVAC systems requiring a 1/4 inch OD copper refrigerant line.
Installation should be performed by a licensed HVAC technician in accordance with local mechanical codes and the equipment manufacturer guidelines. Shut down and recover any refrigerant from the system before disconnecting existing line sets. Avoid kinking the copper line during routing, as kinks restrict refrigerant flow and cannot be field-corrected. Verify flare or swage fittings are properly made and leak-tested before system startup.
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