United Pipe & Steel stocks copper line sets for wholesale HVAC/R distributors nationwide, with pre-insulated liquid and suction lines for mini-split and split-system installations.

United Pipe & Steel is a Master Distributor of wholesale copper line sets, featuring a full line of liquid line and suction line diameters, insulation thicknesses, custom ends and connections.

From liquid line and suction line handling to unique insulation applications and packaging, every line set meets rigorous standards for quality and consistency. All copper line sets can be mixed and matched with steel and PVC products to meet weight minimums for delivery to your store or jobsite anywhere within the United States. Our broad inventory, coupled with our strong commitment to stocked inventory, allows us to offer industry-leading fill rates.

Line Set Product Features

• Factory-assembled liquid and suction lines for air conditioning and refrigeration applications
• Pre-insulated line sets that eliminate on-site sleeving and reduce installation time
• Tight insulation fit designed to improve thermal performance and system efficiency
• Available in a range of standard sizes, lengths, and insulation thicknesses
• Soft temper copper with large coil ID for easier unrolling and installation
• ASTM C-534 compliant insulation
•  UL94/FMRC tested and certified insulation system
•  25/50 flame-spread and smoke-developed rating when tested in accordance with ASTM E84
• Ready-to-install product configuration to support faster field installation and reduced labor

Copper Line Sets for Mini-Split and HVAC Systems

A line set connects the outdoor condensing unit to the indoor air handler or evaporator. The smaller liquid line carries refrigerant to the indoor unit, and the larger insulated suction line carries it back. Contractors order by liquid and suction diameter, overall length and insulation thickness, so having the right combinations on hand keeps installs on schedule.

Stock Line Sets Without Tying Up Cash

HVAC demand swings with the seasons. Buying through a master distributor lets wholesale distributors break bundles, keep fewer sizes on hand and restock quickly during peak cooling season. Add line sets to your next mixed order with copper tube, steel and PVC for delivery on our regular routes.

More Copper Info:

• Pipe Specifications Overview
• Follow Copper Market Activity

Sharpen Your Competitive Edge With United Pipe & Steel

• Become more competitive and manage your risk on volatile commodity products while turning inventory more quickly.
• Break bundles and take advantage of low weight minimums while mixing and matching products, including copper tube, PVC pipes, threaded rod, strut and all other products we carry.
• Buy what you need, when you need it.
• Take advantage of routine ‘milk run’ delivery routes for service once or twice per week.