Refrigeration Hoses

The most important thing to check when buying HVAC hoses is the fitting size at each end. Most manifold gauges have 1/4" SAE ports, which match the service valves on older R22 equipment and many refrigeration systems. Modern split systems running R410A or R32 use 5/16" SAE service ports. A 1/4 to 5/16 refrigerant hose lets you connect a standard manifold to these systems without extra adapters, which can leak or restrict flow.

Hose sets are colour-coded: blue for the low side, red for the high side and yellow for the charging or utility line. Most charging hoses include a valve core depressor at the system end to open the Schrader valve.

If you need adapters, couplers or replacement seals, browse our ac hose fittings and hvac fittings ranges to find compatible parts for your setup.

Standard charging hoses suit everyday servicing and are an economical choice for a spare set in the van. Premium hoses add tougher outer jackets, triple swivel ends that resist kinking, and higher pressure ratings for working confidently with high-pressure refrigerants like R410A and R32.

Ball valve and low-loss hose sets let you shut off the end of the hose before disconnecting. This reduces the refrigerant released to atmosphere and helps protect your hands from refrigerant burns. It also keeps air and moisture out of the hose between jobs, which helps keep systems clean during charging.

Whichever style you choose, check that the working pressure rating suits the refrigerants you handle. Inspect hoses regularly for cracks, worn gaskets and damaged ends. Replace gaskets as soon as they show wear, as they are a common source of small leaks.

Charging hoses are not always the best choice for evacuation. Standard 1/4" hoses and core depressors restrict flow, which slows the vacuum and can make it harder to reach a deep vacuum. For faster evacuation, many technicians run shorter, larger-bore vacuum hoses such as 3/8" lines between the vacuum pump and the system, combined with core removal tools.

Short extension hoses are handy for reaching awkward service ports or keeping a gauge or probe close to the connection. Spare yellow hoses in different lengths make it easy to replace a damaged line or set up a dedicated hose for recovery or charging from a cylinder.

If you’re upgrading your setup, pair quality hoses with digital manifold gauges for accurate pressure, superheat and subcooling readings. Keep a full spare set in the van so you’re never caught short on site.