25FT Mini Split Line Set – Premium Copper & Insulation Kit

A high-performance 25-foot mini-split line set from Topfurn delivers the durability and efficiency needed for DIY HVAC installations. Engineered with thick-walled copper tubing (0.6″/0.55″ walls) and a triple-layer insulated shield, this kit ensures leak-proof connections, crush resistance, and protection against extreme temperatures—from -22°F to 221°F. The flared copper tubing (1/4″ & 3/8″ OD) and included flared nuts simplify installation while maintaining a secure seal, ideal for both residential and commercial setups.

This all-in-one kit includes everything you need for a seamless DIY project: 25 ft. of seamless copper tubing, a 3/8″ thick flame-retardant PE foam insulation (UV-resistant and condensation-proof), refrigerant lines, a drain hose, and a wall sleeve. The universal compatibility makes it a direct replacement for most mini-split systems requiring 1/4″ and 3/8″ line sets, ensuring a perfect fit for bedrooms, offices, restaurants, and more. Save time and avoid extra purchases with a single, hassle-free installation kit.