Mini Split Line Set 50 Ft, 1/4–1/2 Insulated Copper

Mini split line set copper tubing delivers a tight, insulated connection to reduce energy loss and help prevent leaks in HVAC or heat pump installs. This 50 ft (15.2 m) dual copper line set uses thick-wall C12200 copper with reinforced flared nuts and 3/8 in PE+EVA foam insulation to manage condensation and protect performance outdoors. Designed for common 12,000–18,000 BTU systems, it’s a practical choice for routing through walls and clean, professional-looking runs.

• Fits standard 1/4 in liquid + 1/2 in suction connections for many 12,000–18,000 BTU mini split and heat pump systems


• Delivers thick-wall 99.9% pure C12200 copper for bend resistance and dependable routing through walls


• Reduces cooling loss with 3/8 in (9.5 mm) PE+EVA insulation that helps limit condensation and weather exposure


• Includes reinforced flared nuts for secure connections and easier assembly during installation


• Secures outdoor runs with 2 weather-resistant strapping tapes for a neat, protected finish

Upgrade or replace your refrigerant line run with a copper tubing set built for everyday HVAC work. The dual-line format supports efficient flow, while thick insulation helps protect against heat, moisture, and outdoor wear—ideal for garages, additions, or wall-pass installs where clean routing matters. Keep a spare on hand for quick changeouts or new installs so your project doesn’t stall when you’re ready to connect the indoor and outdoor units. Grab yours today and finish your mini split installation with a cleaner, more reliable line setup.

• Length: 50 ft / 15.2 m


• Copper material: C12200 (Cu 99.9%)


• Line sizes (OD): 0.3 in / 6.4 mm (high pressure) and 0.5 in / 12.7 mm (low pressure)


• Insulation: PE + EVA foam, 0.4 in / 9.5 mm thickness; white PE insulation tube outer


• Pressure rating: 850 PSI


• Net weight (with accessories): 12.9 lb / 5.9 kg ±3%


• Included accessories: flared nuts, 2 strapping tapes