Refrigerant and leak repair
Split System Regas Adelaide
If your unit runs but barely cools on a hot day, or heats weakly through winter, low refrigerant could be the reason. We book split system regas Adelaide jobs with ARCtick licensed technicians who locate the leak, repair it, then restore the correct charge, so you are not paying for gas that simply escapes again.
Plain English
What Does a Regas Actually Mean?
A split system works by pumping refrigerant around a sealed loop. The refrigerant soaks up heat inside your home and releases it outdoors in summer, then reverses the process in winter. It is not a fuel, and it does not get used up during normal operation.
So when a technician says a system needs a regas, it really means something has let refrigerant out. In almost every case, that is a leak somewhere in the pipes, joints or coils. Topping up without fixing the leak only buys time, sometimes very little.
A proper regas therefore involves several steps. The leak is found and repaired, air and moisture are removed from the system, and then the correct amount of refrigerant is added according to the manufacturer’s specification.
Find
Locate where refrigerant is escaping, using pressure tests, electronic detectors, bubble solution or a combination of methods.
Fix
Repair the leaking flare, joint, valve or coil so the circuit is sealed again and able to hold pressure.
Fill
Evacuate the system with a vacuum pump, then charge it with the correct refrigerant type and amount.
Symptoms
How Can You Tell Your Split System Is Low on Gas?
Low refrigerant rarely announces itself with a single clear sign. Instead, performance slips over weeks or months. Many Adelaide households first notice it on the opening heatwave of summer, when the unit that coped last year suddenly cannot keep up.
That said, there are some fairly reliable clues. If you spot several of them together, it is worth booking a technician to check pressures rather than assuming it is just a hot day.
Clues Indoors and Outdoors
What You Notice Inside
- Air from the vents feels cool rather than cold
- Rooms take much longer to cool down than last summer
- Heating in winter feels weak or lukewarm
- Ice forming on the indoor coil behind the filter
- Unit runs constantly without cycling off
- Some models show a fault code related to refrigerant or temperature
What You See Outside
- Frost or ice on the thinner pipe at the outdoor unit
- Oily residue around flare nuts or service valves
- Hissing or bubbling sounds near the pipe connections
- Outdoor fan running but little heat coming off the coil
- Pipe insulation damaged, perished or missing
- Corrosion on coils in coastal areas
Keep in mind that some of these signs overlap with other faults. A dirty filter or a packed outdoor coil can also cause weak cooling and ice. Washing the filters is a sensible first step, and the troubleshooting guide lists other safe checks.
Causes
Why Do Split Systems Leak Refrigerant in Adelaide?
Leaks have many causes, but a few are particularly relevant here. Understanding them helps explain why some homes see repeat problems while others go years without one.
Heat Cycling and Vibration
Adelaide’s long, hot summers and cold winter nights mean pipes expand and contract a great deal over the year. Combined with compressor vibration, this movement can slowly loosen flare joints, especially if they were not made perfectly in the first place.
Salt Corrosion on the Coast
In Glenelg, Henley Beach, Port Adelaide and the western beach suburbs, salty air attacks copper and aluminium. Over time, tiny pinholes can form in the outdoor coil, letting refrigerant seep out slowly.
Installation Quality
Poorly made flares, kinked pipes or missing insulation can all lead to leaks. These issues sometimes show up within the first few seasons after a unit goes in.
Physical Damage
Pipes can be knocked by mowers, whipper snippers, renovations or even pets. In older inner suburb homes where pipes run along exposed walls, accidental damage is more likely.
Age and Wear
Older systems, common in established suburbs such as Modbury, Campbelltown and Marion, may develop leaks as seals, valves and coil materials age.
The law
Who Is Allowed to Regas a Split System?
In Australia, handling refrigerant requires the right licence. Anyone who installs, services, repairs or decommissions refrigerant equipment needs to hold an ARCtick refrigerant handling licence. This is not just paperwork. Refrigerants can harm the environment, and some are flammable, so correct handling matters.
Rapid Air Cooling is a booking and dispatch service. We do not carry out the refrigerant work ourselves. Instead, every regas job we book is sent to a technician who holds the licences that work requires.
It is also worth knowing that DIY regas kits sold online are not a safe or legal option for split systems. Adding the wrong refrigerant or the wrong amount can damage the compressor, and releasing refrigerant to the air is against the rules.
- Refrigerant work must be done by an ARCtick licensed technician
- Recovered refrigerant should be handled and disposed of properly
- The correct refrigerant type must match what the system was designed for
- Charge amounts follow the manufacturer’s specifications for the model
- Mixing different refrigerants in one system is not acceptable practice
Refrigerant types
Which Refrigerants Are Used in Adelaide Homes?
The refrigerant in your split depends mostly on its age and brand. Many newer systems sold in Australia use R32, which has a lower global warming potential than older options. A large number of units installed in earlier years use R410A.
Very old systems may still contain R22. That refrigerant has been phased out under Australia’s ozone protection rules, so supply is limited. If a system that uses R22 develops a leak, the technician may talk with you about whether repair still makes sense.
You can usually find the refrigerant type on the rating plate of the outdoor unit. If you can, take a photo of it before you call. That helps us brief the technician and helps them arrive ready.
Open more detail
Different refrigerants operate at different pressures and need specific tools and gauges. That is one reason a technician needs to know the type before charging a system.
R32 is classed as mildly flammable. Technicians who work with it follow handling practices suited to that classification, which is another reason refrigerant work should only be done by licensed people.
A system designed for one refrigerant should not be converted to another without proper assessment. Simply swapping refrigerants can damage components or reduce performance.
If your system is old and uses a phased out refrigerant, it can still be maintained while it runs reliably. A leak repair is where the cost and availability of that refrigerant tends to become a bigger consideration.
The job
How Is a Split System Regas Carried Out?
A regas done properly takes care and patience. Rushing it can leave moisture or air in the circuit, which harms performance and can shorten the life of the compressor. Here is the general process a licensed technician follows.
The Regas Process Step by Step
Assess performance and pressures
The technician runs the unit, measures temperatures and connects gauges to read system pressures. This confirms whether refrigerant is actually low.Locate the leak
Joints, valves, coils and pipe runs are tested. Methods may include electronic leak detection, bubble solution or pressure testing with nitrogen.Repair the fault
Leaking flares may be remade, valves repaired or damaged sections replaced. A badly corroded coil may need more extensive work.Pressure test the repair
The system is pressurised, often with dry nitrogen, and monitored to confirm it holds without dropping.Evacuate the system
A vacuum pump removes air and moisture from the circuit. This step is essential for a clean, efficient system.Charge and test
The correct refrigerant is added by weight or to specification, then the unit is run in cooling and heating modes to confirm it performs as it should.
Weighing it up
Is a Regas Worth It for an Older Split System?
Often it is, but not always. A regas on a sound system with one small, fixable leak usually gives good value. The unit returns to normal performance and can carry on for many more seasons.
On the other hand, some situations call for a broader conversation. A unit with a corroded outdoor coil near the beach might leak again soon, even after a repair. A system using a phased out refrigerant may be costly to recharge. And if the compressor has been damaged by running low on gas for a long time, a regas alone will not bring it back.
A good technician will explain what they found and give you honest options. They should never pressure you into replacement, and they should not suggest a top up without addressing the leak.
Usually Worth Repairing
A newer unit, a single accessible leak such as a loose flare, a common refrigerant and otherwise good condition all point towards repair.
Worth Discussing Replacement
Severe coil corrosion, repeat leaks, an old refrigerant or a struggling compressor may make replacement the more sensible long term path.
Can You Reduce the Chance of Future Leaks?
You cannot rule leaks out completely, but you can lower the risk. Regular maintenance helps because a technician may spot early warning signs, such as oil stains or perished insulation, before much refrigerant is lost.
Protect the outdoor unit and pipe runs where you can. Keep garden tools, mowers and trailers clear of them, and make sure pipe insulation stays intact. Exposed pipes in full western sun can perish the insulation over a few Adelaide summers.
If you live near the coast, rinse the outdoor coil gently with fresh water now and then to remove salt. Avoid high pressure sprays, which can bend fins. Book a split system service each year so the coil and connections are checked properly.
Waiting it out
What Happens If You Keep Running a Unit With Low Refrigerant?
It is tempting to keep using a split that still blows slightly cool air, especially in the middle of an Adelaide summer. Unfortunately, running short of refrigerant puts the system under real strain, and the damage can build quietly.
Refrigerant does more than carry heat. It also helps keep the compressor cool and carries oil around the circuit. When the charge is low, the compressor can run hotter and with less lubrication than it was designed for. Over time, that raises the risk of a far bigger failure than the original leak.
Meanwhile, the indoor coil may freeze over. Once ice builds up, airflow drops even further and meltwater can overflow the drain tray when the unit finally switches off. That is how a refrigerant problem sometimes turns into water dripping down a wall.
Rising Running Time
The unit runs longer to reach the set temperature, which adds wear to the fan and compressor and can push up power use.
Compressor Stress
Higher temperatures and less oil circulation strain the most important part of the system, which is also the most involved to replace.
Water Damage
Iced coils can melt into an overflowing tray, leading to drips, stained plaster and damp carpet beneath the indoor unit.
If you suspect low gas, the kindest thing for the system is to switch it off and book an inspection. On a very hot day, fans, closed blinds and a cool room elsewhere in the house can tide you over until the technician arrives.
Brands
Can Any Brand of Split System Be Regassed?
Yes. Licensed technicians can regas all the common brands, as long as the correct refrigerant and specifications are used. We are a booking service and are not an authorised dealer or accredited agent for any manufacturer.
Daikin
Leak repair and regas for Daikin splits, including widely installed models like the Cora and Zena.
Mitsubishi
Mitsubishi Electric MSZ-AP and MSZ-EF series, plus Mitsubishi Heavy Industries systems.
Panasonic
Panasonic reverse cycle splits, including nanoe X equipped models.
Samsung
Samsung split systems, WindFree models among them, regassed to specification.
Fujitsu
Fujitsu Lifestyle series and other Fujitsu reverse cycle units.
LG
LG Dualcool and Artcool inverter splits in houses and apartments.
Hitachi, Toshiba, Haier and Carrier systems can also be booked. Ducted systems lose refrigerant too, and our ducted air conditioning service page explains how those are checked.
Service area
Where Do We Book Regas Jobs Around Adelaide?
Leak and regas jobs come from all over the city. Coastal suburbs like Glenelg, Henley Beach and Port Adelaide see corrosion related leaks, while older systems in Modbury, Campbelltown, Marion and Prospect may develop wear related ones. We cover the north through Salisbury, Elizabeth and Mawson Lakes, and the south to Morphett Vale, Noarlunga and Aldinga.
Hills homes in Stirling and Mount Barker are covered as well. See the Adelaide air conditioning hub for more about local coverage.
Questions
Frequently Asked Questions
Does a split system need regular regassing?
No. A healthy system is sealed and keeps its refrigerant for life. If gas is low, there is a leak, and that leak should be found and fixed.
Can I just top up the gas without fixing the leak?
It is not good practice. The refrigerant will escape again, which wastes money and harms the environment. A licensed technician should repair the leak first.
How long does a regas take?
It depends on how easy the leak is to find and repair, and how long the pressure test and evacuation need. The technician can give a better idea once on site.
Is low refrigerant dangerous?
Low charge mainly affects performance and can strain the compressor. However, refrigerant handling itself needs care, so leave pipes and valves to a licensed technician.
Why does my coastal unit keep leaking?
Salt air near the beach can corrode coils and create pinhole leaks. Regular rinsing and servicing help, though a badly corroded coil may eventually need replacing.
Will a regas fix ice on my unit?
If low refrigerant is the cause, a proper leak repair and recharge should stop the icing. Dirty filters and poor airflow can cause ice too, so the technician checks those as well.
Are your technicians licensed for refrigerant?
Yes. We book regas work only with ARCtick licensed technicians who hold the licences their work requires.
Related
What Else Might Help Your System?
If the system has other problems besides low gas, see our air conditioner repairs Adelaide page. Rapid Air Cooling operates across the country as part of our air conditioning service Australia network, with every city on the locations page. You can reach us any time through the contact page.
Losing Cooling Power?
Book an ARCtick licensed technician to find the leak and regas your split system properly.
Reviewed by AC repair and service specialist on 22 October 2026. How we write our articles