The most common sizes for domestic split system installations are 60x60mm and 75x75mm, which accommodate both refrigerant pipes and electrical cables in a single run. Larger cassette or multi-split systems may require 100x60mm or wider trunking. Always check pipe and cable diameters before selecting a size.

Yes, in most domestic AC installations refrigerant pipes, condensate hose, and electrical cables are run together in the same trunking. Ensure the trunking is sized correctly to avoid compression of insulation on the refrigerant pipes, which would reduce thermal performance.

PVC trunking is the standard choice for most domestic and light commercial AC installations — it is lightweight, easy to cut, and available in white to match interior finishes. Aluminium trunking offers a more premium finish and greater durability for exposed or high-specification installations.

Yes. We stock a full range of trunking accessories including flat angles, internal and external corners, tee pieces, end caps, and joining pieces to complete a neat installation. Accessories are available to match standard trunking sizes.

Standard white PVC trunking is not UV-stabilised and will degrade in direct sunlight over time. For external installations, use UV-resistant grey PVC trunking or aluminium trunking rated for outdoor use. Ensure all joints are sealed against water ingress.