Mini Split Line Set 16ft, 1/4 x 3/8 Insulated Copper

Mini split line set delivers a clean, reliable connection between indoor and outdoor units while reducing heat loss with triple-layer insulation. This 16ft copper tubing kit includes 1/4" and 3/8" dual pipes for high/low pressure HVAC use, with thick-walled copper built to resist kinks and flattening during routing. Designed for mini split air conditioner and heat pump installations up to 12,000 BTU, it arrives with practical accessories to speed setup and help keep your run protected.

• Fits 0–12,000 BTU mini split AC and heat pump systems with 1/4" + 3/8" dual copper pipes


• Delivers 16ft reach to connect indoor/outdoor units across longer, cleaner routes


• Resists kinks with thickened ASTM-compliant copper tubing for easier bending and routing


• Protects lines with triple-layer insulation that helps maintain thermal performance and moisture resistance


• Includes install-ready accessories to reduce extra trips and avoid welding

When your install depends on a tight fit, stable insulation, and tubing that won’t collapse mid-bend, this mini split line set keeps the job moving. The dual copper pipes are sized for common mini split HVAC applications, while the insulated wrap helps protect the run through walls and along exterior paths. With connection cable, drain hose, covers, sleeves, sealant putties, and tie wraps included, you can plan a more complete install from the start. Grab yours today and finish your line run with fewer add-ons.

• Line set length: 16ft / 4876.8mm


• High-pressure pipe O.D.: 1/4in / 6.35mm


• Low-pressure pipe O.D.: 3/8in / 9.53mm


• Insulation: triple-layer


• Overall dimensions (package): 20.86 x 19.68 x 2.36in / 530 x 500 x 60mm


• Net weight (with accessories): 6.39lb / 2.9kg


• Included accessories: 18ft connection cable, drainage pipe, 2 tie wraps, decorative covers, wall sleeves, 2 sealant putties, assorted accessories