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.

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.