When to repair a unit and when to replace it
This unit has failed twice this year. Do we keep fixing it?
Published 23/10/2026. Written by the Pristine Cooling team, Kalgoorlie.
Twice in a year is worth paying attention to, though it does not settle it on its own. Three questions do. What actually failed. Whether the cause has been dealt with or only the symptom. What the next failure costs your business. Age is the question everybody asks first and it is the least useful of the lot.
Why age is the wrong starting point
How long a unit lasts depends on the brand, the model, how hard it has worked and how well it has been looked after. Two identical units installed the same week can be in completely different condition a few years on.
So a number of years tells you very little by itself. What the unit has been through tells you a great deal.
What failed matters more than how often
There is a real difference between a bolt on part and the sealed heart of the system.
Fan motors, capacitors, contactors, sensors and control boards are replaceable items. They wear, they get changed, the system carries on. A unit that has had two of those fail is not necessarily in trouble.
A compressor is different. It is the expensive component, it is sealed, replacing one is a significant piece of work. When a compressor goes, the sum changes, because you are now spending serious money on a system whose other components are the same age.
So the useful question is not how many failures. It is whether they were all cheap parts doing what cheap parts do. Or whether the expensive end of the system is involved.
Repeat failures in different places
One component failing twice usually means something is wrong with the installation, the setting or the environment rather than the part.
Several unrelated components failing in a short run is a different signal. That is a system that has been run hard, run hot, run outside what it was chosen for. The wear is now showing up everywhere at once. Those are the ones where another repair tends to be followed by another repair.
Has the cause been dealt with
This is the one that decides more cases than anything else.
If a system keeps going flat and keeps getting gassed, the repair is not addressing the fault. Refrigerant does not get used up, so a system that is low has a hole in it, which is covered in a split system blowing warm air. Replacing the unit will not help either if the hole is in the pipework rather than the unit.
If a unit keeps tripping out in summer, the question is whether it was ever big enough. Then whether it is sitting somewhere it cannot breathe. That is rated for 35 degrees, working at 45 territory. Putting a new unit in the same bad position buys you a newer version of the same problem.
A repair that does not address the cause is not a repair. It is a payment plan.
What the next failure costs you
This is a business question rather than a technical one. It is also the one that should carry the most weight.
A unit cooling a storeroom can fail on a Friday and be dealt with on Monday. A cool room full of stock cannot. Neither can a comms room, a pharmacy fridge or a kitchen in the middle of a service.
The higher that number, the earlier replacement makes sense, because you are not only buying a new unit. You are buying the removal of a risk you currently carry every summer.
Two practical questions to ask
What refrigerant does it use. Is that still straightforward to get hold of for this model.
Are parts for this unit still readily available. Is the next failure going to mean a wait.
Neither of those decides it alone. Both change the arithmetic, both are easy to find out before you commit to anything.
Where the line sits
The honest position is that the information belongs to us and the decision belongs to you.
What a contractor owes you is a clear account of what failed, what it will cost to put right, what else is showing wear, then what the realistic outlook is. What a contractor should not do is keep quoting repairs on something they would not repair themselves.
If a unit has let you down twice this year, the useful next step is somebody looking at the whole system rather than the last fault. More on what that looks like is on preventative maintenance.
Ring us and we'll tell you when we can be there
Same number either way. Ring it if something is down right now or if you want a quote, a service or a maintenance contract set up.