1/4″ × 3/8″ mini-split line set
Pre-insulated ACR copper, flared and ready to install. Fits common 9k–12k BTU systems. Available in 16 ft and 25 ft.
Preorder now — ships with our first run
Preorder opening soon. Want first dibs or have a question? Contact us.
- Line size1/4″ liquid × 3/8″ suction
- Lengths16 ft, 25 ft
- TubingC12200 ACR copper, pre-flared
- InsulationClosed-cell, both lines
- FitsCommon 9k–12k BTU mini-splits
- RefrigerantR-410A or R-454B compatible
About this line set
A 1/4″ × 3/8″ pre-insulated copper line set sized for the smallest, most common single-zone mini-splits — typically 9,000 to 12,000 BTU. The ACR copper arrives flared and insulated on both lines, ready to route and connect on a standard flared system. Always confirm the correct diameter and length for your unit with the size calculator and your installation manual before buying.
What's in the box
- One insulated line set (1/4″ liquid + 3/8″ suction), in your chosen length
- Pre-flared ends
- Insulation on both lines
Good to know
This is a standard flared line set — see flared vs. quick-connect if you need a no-vacuum DIY option, and our install guide for step-by-step connection. The copper works with R-410A or R-454B systems; match your tools and charge to your unit's refrigerant.