Mini Split Line Set 25 Ft, 1/4 x 1/2 Insulated Copper

25 ft mini split line set delivers a clean, efficient connection between indoor and outdoor units with triple-layer insulation to help reduce energy loss and protect the copper tubing. Designed for mini split air conditioner and heat pump HVAC installs, it includes paired 1/4 in and 1/2 in copper lines plus a long connection cable, making typical residential runs easier to route, seal, and finish.

• Fits 12,000–18,000 BTU mini split systems with 1/4 in high-pressure + 1/2 in low-pressure copper lines.


• Delivers kink-resistant performance with controlled wall thickness to reduce flattening during bends.


• Protects lines with triple-layer insulation that helps resist moisture, pressure, and heat transfer.


• Includes install-ready accessories—connection cable, drain hose, wall sleeves, sealant putty, wraps, and covers.


• Simplifies routing across longer spans with a full 25 ft length for flexible indoor/outdoor placement.

Built for straightforward mini split and heat pump installations, this insulated copper line set helps you complete a neat, professional-looking run while protecting critical refrigerant lines. The dual-tube configuration supports common HVAC setups, and the included accessories reduce extra trips for small parts during installation. Measure your required path, confirm your unit’s line size, and plan for smooth bends to maintain airflow and efficiency. Grab yours today and get your next HVAC hookup ready faster.

• Line set length: 25 ft (7620 mm)


• High-pressure line O.D.: 1/4 in (6.35 mm)


• Low-pressure line O.D.: 1/2 in (12.7 mm)


• Insulation: triple-layer insulation wrap


• Connection cable length: 27 ft


• Net weight (with accessories): 10.14 lb (4.6 kg)


• Package dimensions (L×W×H): 24.01×24.01×1.96 in (610×610×50 mm)