Mini Split Copper Line Set 25 Ft, 3/8 x 5/8 Insulated

Mini split line set delivers a cleaner, leak-resistant install with pre-insulated copper tubing and included fittings for faster HVAC hookups. This 25 ft / 7.6 m copper line set uses 99.9% pure C12200 copper with thick walls to handle tight bends and wall runs. Designed for common mini split and heat pump systems, it pairs extended wiring, drain hose, and finishing parts in one kit to reduce extra trips and missed components.

• Fits standard 3/8" liquid + 5/8" suction line configurations for many 18,000–26,000 BTU mini split systems


• Delivers bend-resistant, thick-wall C12200 copper to help reduce kinks and potential leak points during routing


• Includes 3/8" thick PE+EVA insulation to limit condensation and reduce cooling/heat loss in varied weather


• Includes 27 ft electrical cable, 6.5 ft drain line, wall sleeve, decorative cover, tape, and sealant putty


• Simplifies DIY installation with pre-flared ends and flared nuts for quicker connections

Built for home upgrades, garage conversions, studios, and multi-story runs, this all-in-one mini split tubing kit keeps the key parts matched by length and ready to install. The extra-long wiring helps avoid splices, while the insulated coil supports efficient operation from season to season. Keep your install moving and reduce last-minute hardware runs—grab yours today and prep your mini split setup with the right line set and accessories from the start.

• Line set length: 25.0 ft / 7.6 m


• Copper material: C12200 (Cu 99.9%)


• Tube OD: 3/8 in (0.4 in / 9.5 mm) high-pressure; 5/8 in (0.6 in / 15.9 mm) low-pressure


• Insulation material: PE + EVA foam


• Insulation thickness: 0.4 in / 9.5 mm (3/8" class)


• Electrical cable: SJT FT2 105℃ 300V, 4 × 16 AWG; length 27 ft


• Expanded size: 300.0 × 1.4 × 2.5 in / 7620 × 35 × 63 mm


• Net weight: 13.1 lb / 5.9 kg (±3%, with accessories)