Air Conditioner Not Working?
Tell us what the system is doing and what you have already checked, and we'll put you in touch with licensed technicians in your area.
Typical Costs
These are indicative 2026 Victorian estimates only. Fault type, part availability, system age and access all move the figure. Refrigerant work must be carried out by a licensed technician, and older systems may have limited parts availability.
Air Conditioner Not Cooling or Heating VIC 2026 - Get Free Quotes
An air conditioner that stops cooling or heating properly is usually suffering one of about six things, and two of them you can check yourself in ten minutes. A blocked filter and a wrongly set controller account for a surprising share of Victorian callouts, and technicians charge $120 to $250 to attend and tell you so. Some of what gets reported as a fault is not one at all, including the steam that rises off an outdoor unit mid winter and the pause in heating that comes with a defrost cycle. Where there is a real fault, the symptom usually points at the category before anyone opens the unit, with weak airflow, warm air and a system that will not start each suggesting different causes. Capacitors are the most common single failure at $180 to $400, while a leak find and regas runs $400 to $900 and control boards climb to $1,400. Ducted and zoned systems add their own failure modes, since a stuck damper or a failed zone motor presents as one room that will never come right. This guide works through the symptoms in order and identifies where the line sits between what you can safely check and what needs a licensed technician. Post your job on The Quote Yard to compare quotes across Victoria.
At a Glance - Symptom to Likely Cause VIC 2026
| Symptom | Most Likely Cause | Owner Fixable | Typical Cost |
|---|---|---|---|
| Weak airflow | Blocked filter | Yes | Free |
| Runs but no cooling | Low refrigerant | No | $400-$900 |
| Nothing happens at all | Tripped breaker | Check only | $0-$400 |
| Outdoor unit silent | Failed capacitor | No | $180-$400 |
| Cold air in heating mode | Defrost cycle | Usually normal | Free |
| One room only | Zone or damper | Check controller | $200-$600 |
Cost Depth: What a Callout Actually Buys
A diagnostic callout in Victoria runs $120 to $250 and covers attendance plus the first period of investigation, typically the first half hour to hour. That fee is charged whether the answer is a blocked filter or a failed compressor, which is precisely why working through the owner checks first is worth ten minutes of your time. Where a fault is found, most businesses apply the callout toward the repair rather than charging it twice, though not all do and it is worth asking before booking. Parts pricing varies enormously by fault, from a capacitor at $180 to $400 fitted through to a control board at $500 to $1,400 depending on the model. Refrigerant work sits in its own category, since a leak must be located and repaired before recharging, and a technician who simply tops up a system without finding the leak is selling you the same repair again next summer. Systems older than about twelve years introduce parts availability as a variable, and units running discontinued refrigerant can become uneconomic to repair regardless of what has failed.
Refrigerant handling licences are issued by the Australian Refrigeration Council and electrical licensing is administered by Energy Safe Victoria, with equipment standards published by Standards Australia. Practitioner registration sits with the Building and Plumbing Commission and efficiency programs with the Victorian Government. Consumer rights and repair obligations sit with Consumer Affairs Victoria, consumer guarantees with the ACCC, disputes are heard at VCAT, and general information appears at vic.gov.au.
Air Conditioning Not Cooling or Heating in Victoria
An air conditioner that has stopped performing properly is usually suffering one of a short list of problems, and the list is shorter than most households fear. Blocked filters, controller settings, tripped breakers, failed capacitors, low refrigerant and airflow restrictions account for the overwhelming majority of Victorian callouts. Two of those you can check yourself before anybody attends. The economics of doing so are set out immediately below. Six causes cover almost everything a Victorian household will meet. The list is far shorter than most households fear.
The economics make those checks worth doing. A technician charges $120 to $250 simply to attend and investigate, and that fee applies whether the answer is a filter you could have cleaned or a compressor that has failed. Ten minutes with this page before picking up the phone is the best return available, and repair pricing sits under air conditioning repairs. A callout to clean a filter is money spent on information you could have had free. Technicians would rather attend a genuine fault than a full filter. Ten minutes is a small price against a $250 attendance.
Some behaviour that looks like a fault is the system working correctly, and this catches out a great many Victorian households in winter. A reverse cycle unit that occasionally blows cool air in heating mode, or that struggles on a properly cold morning, is frequently doing exactly what its design requires. Knowing which is which prevents an unnecessary callout. Winter defrost behaviour accounts for a disproportionate share of Melbourne callouts. Both normal behaviours are explained in the heating section below. Steam rising from the outdoor unit in winter alarms people unnecessarily.
Timing matters more in this trade than almost any other. Systems fail when they are working hardest, which means the first serious heatwave and the first proper cold snap generate a flood of calls simultaneously. A fault noticed in October gets attended within days, while the same fault in late January can mean a week of waiting. Acting on early symptoms during a quiet month is worth real money. Preventive servicing catches most of what would otherwise become an emergency.
There is a clear line between owner checks and licensed work, and it is worth stating plainly. Cleaning filters, checking the controller, clearing debris and resetting a breaker are all safe. Anything involving refrigerant, the electrical supply beyond the switchboard, or opening the outdoor unit is licensed work with real hazards attached. Anything involving refrigerant or the outdoor unit's internals is not. Opening the outdoor unit exposes mains voltage and a capacitor that holds a charge. That is not a boundary worth testing.
System age changes the calculation once a fault is diagnosed. A unit past twelve years old raises parts availability as an issue, and older systems running discontinued refrigerant can be uneconomic to repair regardless of what has actually failed. That decision is covered under air conditioning replacement and upgrade. Twelve years is roughly where that conversation starts. Refrigerant type sits on the same plate and matters just as much. Both figures are worth reading before authorising diagnostic work.
The sections below work through the symptoms in order, starting with the checks that cost nothing. Repair pricing and part costs sit under air conditioning repairs. Everything begins with the checks that cost nothing. Nothing here needs technical knowledge to follow. Owner checks come first because they cost nothing.
Check These First
Five checks take ten minutes between them and resolve a meaningful share of faults. None involves tools, none carries any risk, and all of them are things a technician will do in the first two minutes of a paid callout. None of them involves tools and none carries any risk. That overlap is exactly why doing them first saves money. Doing them first is what stops you paying for information you could have had free.
Start with the filters because they cause more problems than anything else. On a split system the filters sit behind the front panel of the indoor head, which lifts open, and they pull out for washing under a tap. A filter thick with dust starves the system of airflow, which reduces output dramatically and eventually causes the coil to ice up. Melbourne's spring pollen and northern dust both accelerate the problem. Filters lift out from behind the front panel and wash under a tap. A blocked filter eventually ices the indoor coil as well.
Check the controller settings next and be systematic about it. Confirm the mode is what you think it is, since heat and cool are easily confused on some remotes, verify the setpoint, check the fan speed is not on its lowest setting, and confirm no timer or schedule is overriding what you are asking for. Households frequently discover somebody else changed something. Holiday and timer modes persist far longer than anybody remembers setting them. Confirm the mode, the setpoint and the fan speed in turn.
Look at the outdoor unit and listen to it. The fan should be turning and the unit should be audibly running when the system is calling for cooling or heating, and if it is silent while the indoor unit blows, that points toward an electrical fault. Clear any leaf litter, garden growth or stored items crowding it. A silent condenser while the indoor unit blows points squarely at an electrical fault. A hum without the fan turning suggests a failed capacitor.
Check the switchboard for a tripped breaker or safety switch. Air conditioning runs on its own dedicated circuit, so look for the switch labelled accordingly and reset it once if it has tripped. If it trips again immediately, stop and call somebody, because a repeatedly tripping circuit indicates a genuine fault rather than a nuisance trip. Continuing to reset it is unwise and potentially dangerous. The circuit should be labelled for air conditioning specifically. Reset it once and once only.
Look at the indoor unit for ice on the coil or water dripping from the head. Ice indicates either an airflow restriction or low refrigerant, and running a system in that state makes matters worse, so turn it off and let it thaw. Water dripping inside usually means a blocked condensate drain. Switch it off at the wall and wait for the coil to clear. Photograph where the ice sits before it melts away. The location of the ice narrows the diagnosis considerably.
If all five check out and the system still underperforms, the problem is beyond owner territory. That is the point at which a callout is worth paying for, and the checks you have done will help the technician considerably. Routine attention that prevents most of this sits under air conditioning servicing. The checks you have already done will shorten the technician's visit. Tell the technician what you already checked when you book. It saves them repeating the same five minutes.
Not Cooling Properly
Cooling failure divides into two distinct patterns and telling them apart narrows the cause immediately. Either the system runs but the air is not cold, or the system produces cold air that never seems to cool the room. Telling those two apart takes about a minute of standing in the room. Say which one applies when you describe the problem on the phone. Both patterns are described below with their usual causes.
Air that is not cold at all, with the system running normally, points most strongly toward refrigerant loss. The compressor may still run and the fans may still turn, but without adequate charge there is nothing to carry heat out of the house. This is the commonest genuine fault on systems past five years of age. Performance usually falls away across a season rather than overnight. The system operates normally while achieving very little.
Cold air that fails to cool the room usually indicates an airflow or capacity problem instead. A blocked filter, a dirty indoor coil, furniture obstructing the unit or doors left open to unconditioned areas all produce this pattern. So does a system that was undersized when it was installed, which no repair will fix. An undersized system produces the same pattern and no repair fixes it.
Ice forming on the indoor coil or the copper pipework is a clear signal and points in two directions. Restricted airflow drops the coil temperature below freezing so condensation freezes on it, and low refrigerant charge does the same thing for different reasons. Either way the system should be switched off to thaw before anybody investigates. Ice on the copper pipework outdoors points more strongly toward refrigerant loss. A blocked filter and a low charge both drop the coil below freezing. Running the system in that state makes matters considerably worse.
The outdoor unit running continuously without ever reaching setpoint suggests the system is losing the battle rather than failing outright. On a forty degree Melbourne afternoon that can be normal for an older or marginally sized system, particularly with west facing glass. On a mild day it indicates a real problem. Note the outdoor temperature when it happens, since that changes the interpretation. West facing glass makes this considerably more likely in the afternoon.
Short cycling, where the system starts and stops every few minutes, points toward a control or sensor issue or an oversized system. It uses more power than steady running and wears the compressor, and it is worth mentioning specifically when you describe the fault. Count roughly how many times an hour it happens before calling anybody. That figure tells a technician more than the symptom alone does.
Not Heating Properly
Heating faults matter more in Victoria than cooling faults simply because the heating season is longer and colder. They also generate more unnecessary callouts, because several normal behaviours look alarming to somebody who has not had them explained. They also generate more unnecessary callouts than cooling faults do. The heating season here is longer and colder than the cooling season.
The defrost cycle is the biggest source of confusion and it is entirely normal. When the outdoor temperature drops toward or below about seven degrees, moisture in the air freezes onto the outdoor coil, and the system periodically reverses itself briefly to melt that ice off. During those few minutes the indoor unit blows cool air or stops blowing altogether, and steam rises from the outdoor unit. Steam rising from the outdoor unit is part of the same process. It runs most on damp Melbourne mornings through June and July. Frost on the outdoor coil below seven degrees is expected rather than faulty.
That behaviour is designed rather than faulty, and it happens most on damp Melbourne mornings in June and July. A defrost cycle lasting a few minutes every half hour or so in those conditions is normal operation. Defrost cycles that run constantly, or ice that never clears from the outdoor coil, are worth investigating. What warrants investigating is defrost running constantly or ice that never clears.
Reduced heating output on very cold mornings is the other normal behaviour mistaken for a fault. A reverse cycle system extracts heat from outdoor air, and there is simply less available to extract at two degrees than at twelve, so output falls as the temperature drops. Manufacturers rate heating capacity at seven degrees, which Melbourne mornings routinely undercut. Output falls steadily as the outdoor temperature drops below the rated condition. A supplementary heat source on the coldest mornings is normal in older homes. This is physics rather than any kind of defect.
Real heating faults present themselves quite differently. No warm air at all with the system running, an outdoor unit that never starts in heating mode, or a system that heats one day and not the next all indicate a real problem. Reversing valve failure is a fault specific to heating and prevents the system switching modes at all. The reversing valve directs refrigerant one way for cooling and the other for heating. When it sticks, the system will do one mode but not the other. Valve replacement runs $700 to $1,500 because the refrigerant must be recovered.
Households replacing failed ducted gas heating with reverse cycle should expect a different feel rather than a fault. Gas ducted heating delivers noticeably hotter air from the outlets, while reverse cycle delivers a larger volume of milder air, which some people initially read as underperformance. System selection is covered under reverse cycle air conditioning. Some people initially read that difference as underperformance. The room still reaches the same setpoint, just more slowly and gently.
Airflow Problems
Airflow restriction is the most common underlying cause of poor performance and the most preventable. A system moving less air than it was designed to move cannot deliver its rated output no matter how well everything else works. Most of the causes cost nothing at all to fix. Filters and physical obstructions account for the bulk of them.
Filters are the first and most frequent restriction. Manufacturers generally suggest cleaning them monthly during heavy use, and a great many Victorian households clean them once a year or never. Refitting one while still damp encourages exactly the growth you are trying to avoid. Melbourne's spring pollen and northern dust both shorten the interval further. Setting a monthly reminder through summer costs nothing.
The indoor coil clogs more slowly and matters just as much. Fine dust that passes the filter settles on the coil fins over years and forms an insulating layer, which reduces heat transfer without producing any obvious symptom until performance has degraded substantially. Cleaning it is a technician task rather than an owner one, and it forms part of routine work under air conditioning servicing. Performance degrades substantially before any obvious symptom appears. Fine dust passing the filter settles on the fins and forms an insulating layer. Cleaning it properly means dismantling part of the unit.
The outdoor coil suffers the same problem from the other direction. Leaf litter, grass clippings, cottonwood seed and general grime accumulate on the fins, and a condenser that cannot reject heat effectively loses capacity in cooling mode. Rinsing it gently with a hose is within owner territory provided the power is off. Autumn leaf fall is the worst period for this in most Melbourne gardens.
Physical obstructions defeat good systems regularly. Furniture placed in front of an indoor head, curtains hanging across it, plants grown up around the condenser and stored items crowding the outdoor unit all interrupt the airflow the system depends on. This costs nothing to fix and turns up remarkably often. Plants grown up around the condenser count as well. Rearranging a room costs nothing and occasionally fixes the complaint. Check the outdoor unit for stored items at the same time.
On ducted systems the return air path is the restriction people never consider. A return grille blocked by a bookcase or a rug, or a system with an undersized return for its capacity, strangles the whole installation. Duct condition itself is covered under duct cleaning and sanitisation. An undersized return strangles the whole installation. Return sizing matters as much as the number of supply outlets.
Low Refrigerant
Low refrigerant is the fault households most often suspect and it deserves careful handling, because it is both a real problem and the thing least scrupulous operators reach for first. Understanding it protects you from paying for the same repair repeatedly. The key fact is set out in the next paragraph. It is worth understanding properly before a technician raises it. It is also the fault most often diagnosed without any evidence.
A sealed refrigeration circuit does not consume refrigerant. Unlike fuel or oil, the charge circulates indefinitely, so a system that is low has a leak somewhere by definition. Nothing is burnt or used up during normal operation. That single fact is the most useful thing a household can know about this fault. It changes what you should accept as a repair.
The consequence is that topping up without finding the leak is not a repair. A system regassed without locating the loss will run well for a season and then decline again, and households who accept that arrangement pay for it every year or two. A technician who proposes it without leak testing is worth questioning. It also releases refrigerant to atmosphere gradually over the years. Ask directly how the leak will be located before agreeing to anything.
Symptoms of low charge follow a recognisable pattern. Gradually declining performance across a season rather than sudden failure, ice forming on the copper pipework at the outdoor unit, the system running constantly without reaching setpoint, and air from the indoor unit that is cool rather than cold all point that way. Air that is cool rather than cold completes the picture. Gradual decline across a season rather than sudden failure is the signature. Performance falls away over weeks rather than overnight. Households often adapt to the decline before noticing anything is wrong.
Leak location takes time and that is reflected in the price. Technicians use electronic detectors, ultraviolet dye or pressure testing depending on the situation, and a leak in a buried section of pipework is considerably harder to find than one at a flare joint. Expect $400 to $900 for locating, repairing and recharging. A buried pipe run is far harder to investigate than a flare joint. A leak at a flare joint is quick to find and remake. One in a buried pipe run or a coil is a different job entirely.
Older systems introduce a complication worth knowing about. Units installed before the phase down of certain refrigerants may run on gas that is now scarce or unavailable, which makes recharging expensive or impossible and pushes the economics toward replacement. Ask which refrigerant your system uses when a technician attends. Units running phased down refrigerants face rising gas prices and shrinking supply. Gas that has been phased down costs considerably more per kilogram each year. On a corroded coil that spending buys very limited time.
Electrical Faults
Electrical faults produce the most dramatic symptoms and are frequently the cheapest to fix. A system that does nothing at all is often a better outcome than one that runs poorly. Capacitors and contactors are wear items rather than defects. Most of them take under an hour to replace once diagnosed.
A tripped circuit breaker is the first thing to check and occasionally the whole story. Reset it once, and if the system runs normally afterwards it may have been a nuisance trip from a power fluctuation. If it trips again immediately, the fault is real and continuing to reset it is unwise. Continuing to reset a breaker that trips repeatedly is unwise. Other appliances on nearby circuits are worth a glance too.
Capacitor failure is the most common component fault on the outdoor unit. A capacitor provides the starting torque for the compressor and fan motors, and when it fails the unit hums without starting, or the fan turns while the compressor does not. Heat and use degrade them steadily, and Melbourne summers accelerate that. Failures cluster around the eight to twelve year mark on most systems. Replacement takes well under an hour once it is diagnosed.
Contactor failure produces similar symptoms and is similarly inexpensive. The contactor is the heavy duty switch that energises the outdoor unit, and its contacts pit and burn over years of switching. Both this and capacitor failure are far more likely on a system approaching ten years than on a new one. Its contacts pit and burn through hundreds of thousands of switching cycles. Pitted contacts are visible within seconds of opening the cover.
Control board faults are the expensive electrical failure. The board manages every function of the system, symptoms vary enormously from erratic behaviour to complete failure, and replacement runs $500 to $1,400 depending on model. On an older system this is frequently the point where replacement makes more sense. Symptoms described precisely shorten every diagnostic visit. Boards fail from age, power surges and moisture ingress. Price varies enormously because it is a manufacturer specific part.
Sensor faults produce behaviour that seems illogical. A room sensor reading incorrectly will make the system stop when the room is not at temperature or run when it is, and a coil sensor fault can prevent proper defrost operation. Fault codes displayed on the controller usually point toward these. A room sensor reading incorrectly makes the system stop or run at the wrong moments. Thermistors are cheap parts that produce disproportionately confusing symptoms.
Fault codes are worth recording before you call. Most systems display a code on the indoor unit or controller when a fault is detected, and quoting that code to a technician on the phone frequently tells them what part to bring. That single step can turn two visits into one, and switchboard issues sit under switchboard upgrade. A code narrows the fault before anybody leaves the depot.
Ducted and Zoned Systems
Ducted systems fail in ways splits do not, and the extra components mean more that can go wrong. The symptom pattern usually identifies whether the problem is the system or the distribution. Establishing that before you call shortens the visit considerably. Zone motors, dampers and long duct runs all add failure points. Working out which part of the system is affected costs you nothing.
One room underperforming while others are fine almost never indicates a system fault. That pattern points toward a zone damper stuck closed, a duct disconnected in the roof cavity, a blocked or closed outlet, or a zone that has simply been turned off at the controller. Check the controller before assuming anything mechanical. Zone damper motors do fail, and replacement runs a few hundred dollars. A duct disconnected in the roof delivers conditioned air into the cavity instead. Check that the outlet in that room is actually open.
Every room underperforming equally points back toward the central unit. Low refrigerant, a failing compressor, a blocked return air filter or a fan motor problem all reduce output uniformly across the whole system. That distinction is the most useful thing you can tell a technician when you call. The problem sits at the plant rather than in the distribution. Expect the technician to start at the indoor unit. Check the return air filter before booking anything.
Zone dampers are motorised and they fail. A damper motor that has stopped working leaves its zone permanently open or permanently closed, and the symptom depends on which. Replacement runs a few hundred dollars and is covered under thermostat and zone controller installation. The symptom depends on which position it failed in.
Ductwork itself degrades across decades of service. Flexible duct sags, crushes where somebody has walked in the roof cavity, or separates at a joint, and a disconnected duct delivers conditioned air straight into the roof space rather than the room. Melbourne roof cavities reach extreme temperatures, which accelerates the deterioration. Sagging between supports is the most common finding of all.
Controller and communication faults affect zoned systems particularly. Where the controller loses communication with the zone motors or the central unit, behaviour becomes erratic in ways that look like a major fault but are frequently a wiring or board issue. Ducted installations generally sit under ducted air conditioning installation. Behaviour becomes erratic in ways that look worse than they are.
Evaporative systems have their own failure modes worth separating out. Dry pads, a failed water pump, a blocked water line or a system drained for winter and not recommissioned all produce warm air, and on a humid day the system will underperform regardless because that is how it works. Detail sits under evaporative cooling installation. On a humid day the system underperforms regardless.
Victorian Conditions
Four things about Victoria affect how systems fail here and how quickly you will be attended. None of them appears in a manufacturer's troubleshooting guide. All four are worth knowing before you call anybody. Each affects either what fails here or how long you wait for attention.
Seasonal demand is the first and it is severe. Melbourne's weather arrives in sharp changes rather than gradual transitions, so the first forty degree day and the first properly cold morning each generate an enormous simultaneous spike in callouts. Every household in the city discovers the same fault on the same afternoon. Waiting a week during a heatwave is entirely normal. Regional waits during those spikes are longer again.
The long heating season is the second and it shapes which faults matter. A reverse cycle system in Melbourne accumulates far more running hours heating than cooling, so heating faults are both more common and more consequential. Defrost related confusion also concentrates here in a way it does not in warmer states. Heating faults are correspondingly both more common and more consequential.
Coastal corrosion is the third and it kills outdoor units early. Properties around Port Phillip and Western Port, through Frankston, Mordialloc, Brighton, Williamstown and along the Bellarine, see salt attack coil fins and cabinets, and a corroded coil eventually leaks refrigerant. That failure mode is far more common near the bay than inland. A corroded coil eventually leaks refrigerant.
Dust and pollen loading is the fourth and it varies sharply by district. Spring pollen across Melbourne and the heavier dust loading through the Mallee, the Wimmera and northern Victoria both block filters faster than manufacturers assume. Households in those areas need to clean filters considerably more often than the manual suggests. Filter intervals should follow local conditions rather than the manual. Return air grille filters block faster than plant filters do.
Older housing adds a further complication in the inner suburbs. Poorly insulated and draughty period homes place a much heavier load on any system, so a unit that seems to underperform may be adequately sized for a house that leaks heat at every junction. Sealing and insulation sit under window and door draught proofing. Draught sealing and ceiling insulation both reduce the load the system carries. Sealing gaps around doors and windows is inexpensive work.
Regional response times are longer simply because fewer technicians cover larger areas. A household in Gippsland, the Wimmera or the north east may wait considerably longer during a peak than a Melbourne one, since the same handful of businesses serves a wide district. Booking preventive attention outside peak periods matters more in those areas. The same handful of businesses serves a very large district.
What Affects the Cost
The diagnostic callout is the fixed component at $120 to $250, covering attendance and initial investigation. Most businesses apply it toward the repair where one proceeds, though not all do, so ask before booking. After hours and weekend attendance carries a premium. It covers attendance and the first period of investigation on site. Ask what happens to the fee if you decline the repair.
The fault itself determines everything beyond that. A filter clean and reset finishes at the callout fee, a capacitor is $180 to $400 fitted, a fan motor $450 to $900, and a control board $500 to $1,400. Compressor failure sits in a different category and usually prompts a replacement conversation. The spread between the cheapest and dearest repair is enormous.
Refrigerant work carries its own structure because leak location takes time. Finding the leak, repairing it and recharging runs $400 to $900, and a leak in an accessible flare joint is far cheaper to resolve than one in a buried pipe run. Anybody quoting a simple regas without leak testing is not solving the problem. Technicians use electronic detectors, ultraviolet dye or nitrogen pressure testing depending on the situation. Each suits a different kind of leak. A leak in the outdoor coil frequently ends the repair conversation.
Parts availability moves with system age and brand. Current models from Daikin, Mitsubishi Electric, Fujitsu and Panasonic have parts readily available through Victorian wholesalers, while a discontinued model from a minor brand may involve waiting or substitution. Twelve years is roughly where this starts to bite. Discontinued models from minor brands may involve waiting or substitution. Substitute components sometimes exist where originals do not.
Access affects the labour on ducted systems particularly. A roof cavity with poor access, a plant unit positioned awkwardly, or a condenser requiring ladder work all add time to any repair. Second storey and roof mounted equipment costs more to attend for the same fault. Clearing space beneath the roof manhole before the visit helps. Ladder positions outside need firm level ground.
Timing affects both price and availability. Peak season attendance costs more and takes longer to arrange, while the same job in April is cheaper and quicker. That difference is worth several hundred dollars on a non urgent fault. Autumn and early spring attract better rates and shorter waits. Non urgent faults are worth holding until then. Lead times on parts also shorten outside the peak.
Melbourne and Regional Victorian Pricing
Diagnostic and repair rates hold reasonably steady across metropolitan Melbourne, with travel and access accounting for most variation. The tables below cover a standard diagnostic callout and a typical mid range repair. Travel and access account for most of the variation across the city. Both assume standard hours attendance rather than after hours.
| Melbourne Area | Diagnostic Callout | Typical Repair |
|---|---|---|
| Inner Melbourne & CBD | $160-$280 | $350-$1,100 |
| Northern Suburbs | $120-$220 | $280-$900 |
| Eastern Suburbs | $140-$250 | $320-$1,000 |
| Western Suburbs | $120-$220 | $280-$900 |
| South Eastern Suburbs | $130-$240 | $300-$950 |
Two Melbourne factors explain most of that spread. Inner city attendance carries parking difficulty and slower travel between jobs, which businesses price in, and apartment work adds building access and lift coordination on top. Outer suburban work involves longer drives but easier access at each property. Body corporate approvals occasionally delay attendance as well.
| Regional Area | Diagnostic Callout | Typical Repair |
|---|---|---|
| Geelong & Surf Coast | $130-$240 | $300-$950 |
| Mornington Peninsula | $140-$250 | $320-$1,000 |
| Ballarat & Bendigo | $140-$260 | $320-$1,000 |
| Gippsland | $150-$280 | $350-$1,050 |
| Wimmera, Mallee & North East | $160-$300 | $360-$1,100 |
Regional callout fees reflect travel distance directly. A technician driving an hour each way carries that in the fee, and businesses covering large districts frequently batch jobs by area on particular days. Fitting into an existing district run is the cheapest way to be seen. Ask when they are next working your area.
Parts logistics add delay rather than cost in regional areas. A part available same day from a Melbourne wholesaler may take a day or two to reach a country technician, which turns a single visit into two. Quoting the fault code when you call helps enormously here. Providing the model number at booking lets a country business order ahead. Freight rather than price is the constraint outside Melbourne. Ask whether the part is carried on the van or ordered in.
Peak season waiting times are the real regional difference. Fewer businesses serve larger populations, so a heatwave or a cold snap produces queues that metropolitan households do not experience to the same degree. Preventive servicing before each season is worth considerably more in the country. Fewer businesses serve larger populations across country Victoria.
Combining work into one visit saves real money at distance. Having a technician service a second system, check ducting or attend to a minor fault while already on site spreads the travel across more work. Ask what else could be done in the same visit. Second systems, filter changes and duct checks all fit into an existing attendance.
What to Look Out For
Work through the owner checks before booking anybody. A $120 to $250 callout to clean a filter is a poor use of money. Filters, controller settings, the outdoor unit, the breaker and any ice take ten minutes between them. Those five checks resolve a meaningful share of faults outright.
Be sceptical of a regas offered without leak testing. A sealed system does not consume refrigerant, so a low charge means a leak exists, and topping it up without finding that leak sells you the same repair again next season. A proper repair locates the leak, repairs it and recharges by weight. Expect that process to take two to four hours. Ask for the leak location to be recorded on the invoice.
Note down any fault code before you pick up the phone. Systems generally show a code on the controller when they detect a problem, and quoting it on the phone frequently tells a technician which part to bring, turning two visits into one. Photograph the display if the code clears itself. Model and serial numbers from the outdoor unit are worth capturing at the same time.
Ask whether the callout fee applies toward the repair. Practice varies between businesses, the difference is over a hundred dollars, and it is a reasonable question to ask when booking. Confirm after hours rates at the same time. Get the answer before booking rather than discovering it on the invoice. Public holiday rates go higher again.
Establish the system age and refrigerant type early in the conversation. A unit past twelve years with a failed major component and a discontinued refrigerant may be uneconomic to repair, and knowing that before authorising diagnostic work saves money. The data plate on the outdoor unit carries both. A twelve year old system running a phased down refrigerant is a different proposition entirely. Photograph the plate rather than trying to remember the numbers.
Get a quote before the repair proceeds rather than after. Diagnosis and repair are separate steps, and you are entitled to know the cost before authorising the second. Consumer guarantees on repair work are administered by the ACCC. A technician who begins replacing parts without quoting has skipped a step.
Check the technician holds a current refrigerant handling licence. Any work opening the refrigeration circuit requires one, issued through the Australian Refrigeration Council, and electrical work requires separate licensing through Energy Safe Victoria. Unresolved disputes are heard at VCAT. Electrical work requires separate licensing again. Ask for licence numbers rather than assurances.
What to Look for in a Quote in VIC
A repair quote worth accepting names the fault found, the part being replaced, the labour involved, whether the diagnostic fee is credited, the warranty on the repair, and what happens if the fault recurs. A verbal figure with no description of the fault is not something you can hold anybody to afterwards. Ask that the diagnosis itself be stated, not just the remedy. Businesses working properly produce all of it without being pushed.
Give every technician the same information when you call. Cover the symptom, the affected modes, any fault code, the system type and age, what your own checks showed, and whether the fault is constant. Precision on those points shortens the visit considerably. Describe the symptom precisely and say whether it affects cooling, heating or both. Note whether the problem is constant or intermittent, since that changes the diagnosis.
Ask a technician these four things and you will know whether they are diagnosing or guessing. What exactly is the fault, how did you confirm it, what warranty applies to the repair, and how does this fit the age of the system. Clear answers to all four indicate somebody diagnosing rather than parts swapping. Ask them on the phone rather than waiting for the visit. Hesitation on any of the four is informative in itself.
Weigh the repair against replacement once the cost is known. A repair approaching half the cost of a new system on a unit past twelve years old rarely makes sense, particularly where efficiency has improved substantially since it was installed. Ask the technician for their honest view. Efficiency has improved substantially since older systems were installed.
Consider preventive attention rather than waiting for the next failure. Most faults that produce emergency callouts develop gradually and are visible during routine servicing months earlier. Posting the job on The Quote Yard puts one brief in front of several Victorian technicians, and system replacement sits under air conditioning installation. An annual service costs less than a single emergency attendance.
Air Conditioning Fault Finding Across Victoria
We connect Victorian households with licensed technicians diagnosing air conditioning faults across the state, covering systems that run without cooling, heating failures and defrost cycle confusion, iced coils and airflow restrictions, refrigerant leak location and repair rather than repeated topping up, capacitor and contactor failures, control board and sensor faults, zone damper and ductwork problems on ducted systems, and corroded coils on bayside properties.
▶ Inner Melbourne 20 areas
Inner North
Inner East
Inner South
▶ Greater Melbourne 17 areas
Eastern Suburbs
South East
▶ North & West 20 areas
Northern Suburbs
Western Suburbs
▶ Bayside & Peninsula 20 areas
Bayside
Mornington Peninsula
▶ Geelong & Surf Coast 19 areas
Geelong
Bellarine Peninsula
Surf Coast
▶ Gippsland 18 areas
Bass Coast
West Gippsland
Latrobe Valley
East Gippsland
▶ Yarra Valley & Ranges 16 areas
Yarra Valley
Dandenong Ranges
▶ Regional Victoria 35 areas
Goldfields
Macedon Ranges
Murray
North East
High Country
South West
Air Conditioning Fault FAQs - Victoria 2026
What should I check before calling a technician?
Why does my heater blow cold air in winter?
My system runs but the air is not cold. What is wrong?
What does a diagnostic callout cost?
Why is ice forming on my air conditioner?
Only one room is not working. Is the whole system faulty?
The outdoor unit hums but does not start. What is that?
How long will I wait for a technician in Melbourne?
Is it worth repairing an older system?
Does living near the bay cause faults?
Air Conditioning Guides - VIC
Related VIC Services
For Tradies - VIC
Are you a refrigeration mechanic or HVAC technician? Browse current job leads on the VIC tradie job leads board, with relevant work including HVAC jobs VIC and electrician jobs VIC.
Air Conditioning Playing Up in VIC?
Post your job and connect with licensed technicians across Victoria who will diagnose the actual fault, find the leak rather than just topping it up, and tell you plainly when a repair is not worth doing.
Get It DiagnosedAbout This Guide
This page provides guidance information only. Details may change, always verify with the relevant authorities and seek independent professional advice where needed.
Looking for more services across Victoria? View all available trade services.
Reviewed by The Quote Yard Editorial Team
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