Choose Your Copper Pipe

Select the right form and size for your installation below — all pipe is refrigeration-grade, dehydrated and capped, available from UK stock with fast trade delivery.

• Straight lengths — site installs and longer runs
  Pre-cut lengths for clean, professional installations. Easier to handle on commercial jobs and multi-unit systems where pipe runs are planned in advance.
• Coils — flexibility and faster installs
  Continuous coil for flexible routing around obstacles. Ideal for domestic split system installs where pipe needs to follow walls, ceilings and risers.

Pipe Size Guide

AC copper pipe is sized by OD (outside diameter). Match pipe size to your system’s manufacturer specification — common sizes by application:

• 1/4" (6.35mm) — liquid line on most domestic split systems
• 3/8" (9.52mm) — liquid line on larger domestic and light commercial systems
• 1/2" (12.7mm) — suction line on smaller domestic systems
• 5/8" (15.88mm) — suction line on most domestic split systems (most common)
• 3/4" (19.05mm) — suction line on larger domestic and light commercial systems
• 7/8" (22.22mm) and above — commercial, VRF/VRV and multi-unit systems

Always confirm liquid and suction line sizes against the indoor and outdoor unit manufacturer specifications before ordering.

Installation Workflow

Copper pipe is the foundation of every AC installation. The correct sequence ensures a leak-free, compliant system:

• 1. Cut — use a pipe cutter for a clean, square cut with no swarf
• 2. Deburr — remove internal burrs to prevent refrigerant flow restriction
• 3. Flare or swage — prepare pipe ends using a flaring or swaging tool for leak-free connections
• 4. Connect — fit fittings and connectors and torque to manufacturer specification
• 5. Support — clip pipework at regular intervals using pipe clips and hangers
• 6. Pressure test — test with nitrogen using manifold gauges before insulating
• 7. Insulate — apply Class O pipe insulation, seal all joints with tape and adhesive

Part of Every AC Installation

• Pipe Insulation — K-FLEX and Armaflex insulation for all pipe sizes
• Fittings & Connectors — flare fittings, solder fittings and compression connectors
• Pipe Supports & Fixings — clips and hangers for securing pipework
• Cutting Tools — pipe cutters and deburring tools
• Swaging & Flaring Tools — for preparing pipe ends
• Gauges & Manifolds — for pressure testing and commissioning

About Our Copper Pipe Range

We supply refrigeration-grade AC copper pipe to HVAC engineers, AC installers and refrigeration contractors across the UK. All pipe in our range is dehydrated, capped and suitable for use with modern refrigerants including R410A and R32. Available in a full range of diameters and lengths from UK stock.

Order AC copper pipe online today with fast UK delivery and trade pricing available.