The Mueller Copper Lineset delivers professional-grade performance and long-lasting protection for all your HVAC installations. This premium 1/4 inch OD liquid line comes in a 50-foot coil, pre-insulated with a tough, 1/2 inch thick Duraguard UV- and rip-resistant foam insulation that stands up to harsh outdoor conditions, moisture, and mechanical wear.

Ideal for both residential and commercial HVAC systems, this lineset is a trusted choice for air conditioning units, mini splits, and heat pump installations, offering superior thermal performance and installation ease for professionals and DIYers alike.

Key Features:

• Copper Line Size: 1/4 inch OD
• Length: 50 feet
• Insulation Thickness: 1/2 inch closed-cell foam with UV- and tear-resistant outer coating
• Material: Seamless, high-quality copper tubing
• Application: Designed for HVAC systems, including A/C units, ductless mini splits, and heat pumps

Why Choose Mueller Linesets?

• Duraguard Protection: UV-rated and rip-resistant insulation for long outdoor life
• Easy Installation: Lightweight, flexible, and easy to route in tight spaces
• Energy Efficient: Minimizes heat gain/loss and prevents condensation buildup
• Reliable Flow: Smooth, seamless copper ensures optimal refrigerant transfer