Mini Split Line Set 50 ft, 1/4 x 3/8 Insulated Copper

Mini split line set delivers a clean, bend-resistant connection between your indoor unit and outdoor condenser for stable cooling and heating. This 50 ft / 15.2 m copper tubing coil uses 99.9% pure C12200 copper with thickened PE+EVA foam insulation to reduce energy loss and help control condensation. Pre-flared ends with nuts simplify routing through walls and finishing with a neat, professional look.

• Delivers 50 ft reach for flexible mini split and heat pump installs, including longer wall or attic runs.


• Fits standard 1/4" liquid + 3/8" suction sizing for most 0–12,000 BTU mini split systems.


• Reduces condensation with 3/8" thick PE+EVA insulation designed for weather exposure and durability.


• Supports secure connections with flared nuts and reinforced ends to help minimize leak risks.


• Includes strapping tapes to bundle and protect the line set for a cleaner outdoor finish.

Built for HVAC installers and confident DIYers, this insulated copper line set arrives ready to route, flare-connect, and secure without extra guesswork. The thick-wall copper construction helps resist kinks during bending, while the insulation helps maintain temperature transfer efficiency from room to condenser. Whether you’re replacing old lines or installing a new mini split, this set is sized for common residential applications and designed for a tidy, protected run outdoors. Grab yours today and finish your install with fewer callbacks.

• Length: 50.0 ft / 15.2 m


• Copper material: C12200 (Cu 99.9%)


• Line sizes (OD): 1/4" liquid (6.4 mm) + 3/8" suction (9.5 mm)


• Insulation: PE + EVA foam, 3/8" thick (9.5 mm)


• Pressure rating: 850 PSI


• Outer material: PE insulation tube


• Net weight: 10.8 lb / 4.9 kg (±3%, with accessories)