Anyone who handles refrigerant in Australia must hold a refrigerant handling licence issued through the Australian Refrigeration Council, and the business they work for must hold a refrigerant trading authorisation. Both can be checked in a minute on the ARC's public register. That check is the minimum. What separates a good commercial technician from an adequate one is how they diagnose, how they communicate and whether they actually work on the kind of equipment you have.
Start with the licence
The ARCtick scheme exists because refrigerants are regulated gases. Releasing them is illegal, and the equipment that holds them runs at high pressure, so the law requires that anyone who handles refrigerant is trained and licensed to do it. A technician should be able to give you a licence number without hesitation, and the ARC's website lets you look it up. A business that buys and stores refrigerant needs its own authorisation number as well.
In New South Wales, many contractors also hold a licence through NSW Fair Trading, which has its own public register. Ask for the numbers and check them. A legitimate operator will not mind; JNF Refrigeration publishes its own on this website for exactly that reason.
Commercial is not domestic with bigger numbers
A great deal of refrigeration work in Sydney is done by air-conditioning contractors who also do fridges, or by domestic appliance repairers who also do commercial. Both can be perfectly competent, and both tend to struggle with the parts of commercial work that are different: glycol beer systems, walk-in room controls and defrost, display cabinet air curtains, ice machine harvest cycles and the commercial brands that a domestic repairer never sees.
Ask what proportion of their work is commercial, and which equipment types they see most. If your venue uses several cabinet and ice-machine types, ask whether the technician regularly works on similar equipment rather than learning on the job.
Questions worth asking before you book
- How do you diagnose a unit that is running but not cold? A good answer covers airflow, condenser and evaporator condition, defrost, controls and refrigerant, in roughly that order. An answer that jumps straight to a refrigerant top-up is a warning sign, because a system that needs gas has a leak.
- What will you tell me before doing work? You want the fault explained, the options laid out and the cost of each before anything is replaced.
- Will you tell me if it is not worth repairing? A technician who only ever recommends repair is not giving you the full picture. Neither is one who only ever recommends replacement.
- What are your response times? Be wary of anyone who promises a fixed time before they know the day’s workload. An honest answer about how attendance is scheduled is more useful than a guarantee that cannot be kept.
- Do you work on the Northern Beaches regularly? Local knowledge matters here more than most places: salt air, tight beachfront kitchens and access constraints shape how a job goes.
What good communication looks like
Commercial refrigeration faults are rarely simple, and the people paying for them are rarely technicians. The useful skill is explaining what was found in plain terms: what failed, why it probably failed, whether it is likely to happen again and what to watch for. If a technician cannot explain a fault to a venue manager in two minutes, the manager cannot make a good decision about it.
Written records help too. A short note of what was checked, what was replaced and what was recommended is worth keeping for every visit. Over a couple of years it becomes the clearest evidence you will have about whether a piece of equipment is worth keeping.
Red flags
- No licence number offered, or reluctance to have it checked
- A refrigerant top-up as the first and only fix, with no leak found
- Pressure to replace equipment on the first visit without an assessment
- Quotes that will not itemise parts and labour
- Guaranteed attendance times offered before anyone has asked what else is on
None of these makes someone a bad tradesperson on their own. Together they describe someone who is selling rather than diagnosing, and commercial refrigeration is expensive enough without paying for that.