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5 Signs That Air Conditioner Repairs Are Needed


Throughout South-East Queensland, from the vibrant streets of Brisbane to the sunny stretches of the Gold Coast and Sunshine Coast, and out to the heat of Ipswich, the warmth of the sun is both a joy and a challenge.  There is nowhere we would rather be than in the Sunshine State.

A smoothly running air conditioner is a necessity with the challenging heat of Summer, often running unnoticed until it starts to struggle.  This can mean the difference between a cool comfortable oasis indoors vs a sticky tropical jungle invasion.

When your air conditioner starts to call out for attention, it may softly whisper or screaming out for repairs.  By paying attention to air conditioning, you can often avoid the inconvenience of a complete breakdown and the shock of emergency repair bills.  It’s important to listen out for the whispers and get your AC the help it needs.

The need for professional help is not just for the air conditioner’s benefit, although it can extend its life and limit the strain of existence.  It is also directly linked to your health and happiness over the warmer months and helps save money in the short and long term.

  • Repairing small air conditioning issues can often help prevent larger, more expensive issues.
  • Attending to a broken or inefficient unit can save money on running costs and power bills.
  • Timely AC repairs help extend the life of the system, saving money over time.
  • Preparing with air conditioner repairs Brisbane demands with AC for hot, humid nights:

There are many signs that you need air conditioning repairs in both the residential and commercial HVAC settings.  In this article we will narrow down to 5 key signs that your air conditioning unit is whispering for help; from inconsistent cooling to rise in quarterly power bills, to unwanted noises, short-cycling, and moisture undermining your properties integrity.

Let’s unpack the five signs indicating it’s time to call the experts for an air conditioning repair near you.

Sign 1: Inaccurate Temperature Control

Has your lounge ever felt more like a sauna than a sitting room?  If the AC is on but controller setting seems to be nothing but a number, this is one of the most unmistakable signs that an air conditioning system needs repair.  Erratic temperature control is a symptom of distress, indicating that it’s not just about comfort but also a signal from the AC units that something’s wrong with its operations.

There are several reasons why this might happen:

Thermostat Troubles

If the brain of the AC starts malfunctioning, it can no longer command the system effectively.  The thermostat is typically part of the wall controller, although it can be a stand along component.  When faulty, the thermostat can result in an air conditioning system not generating enough cool air or even none at all.  Sometimes the issue may be as simple as needing new batteries.  Sometimes it needs recalibration.  Other times it can also indicate more complex electrical problems or sensor issues.

Compressor Complications

An AC compressor is integral to the cooling process and core component of how air conditioning works.  The compressor pressurises refrigerant to release heat.  If it’s not working properly, your aircon can’t maintain the set temperature.  This leads to a system that runs constantly without properly cooling the indoor environment.

Refrigerant Release

Refrigerant is the lifeblood of the air conditioning cooling process.  If it leaks or is contaminated, inadequate cooling can result.  This not only impacts performance but can also damage to the environment, internal and external.  Air conditioner components can fail if operating without designed refrigerant levels, while the ozone layer is damaged by released refrigerant gases.

Duct Dilemmas

Leaks or blockages in air conditioning ductwork can significantly impact temperature regulation.  Cool air can be escaping into your ceiling, walls, or outside environment instead of circulating through your home or office.  Ductwork components can also malfunction when insulation wears away.

Ice Blast technician in duct for insulation repairs

Addressing these issues promptly can restore balance to your AC system, ensuring that your home or workplace returns to being the cool refuge expected in the Sunshine State.  Furthermore, it can prevent the problem from escalating, which helps protect against potential system failure and costly power bills.

If you’re constantly fiddling with the controller, yet comfort seems to be an elusive goal, it’s time to reach out for professional HVAC repair.  An expert technician can diagnose the problem, from thermostat to compressor, and provide the appropriate solutions to keep your air conditioner running smoothly.

Sign 2: Inflated Power Bills

Have you been experiencing bill shock as your quarterly energy expenditure soars higher than the summer temperatures outside?  An unexpected increase in your power bill could be the symptom of an air conditioning system in need of repair.  When an air conditioner is not running efficiently, it has to work overtime to cool an indoor area.  This leads to energy consumption that is anything but economical.

There are several things that may be contributing to this financial headache:

Aging AC

As air conditioners age, they often become less efficient.  This is especially true if they haven’t been serviced regularly.  Wear and tear on AC components can mean your system has to work harder to achieve the same level of cooling as before.  The question often becomes whether to repair or replace the AC.

Filthy Filters

Clogged or dirty air filters restrict airflow, forcing an air conditioner to use more energy to circulate air.  This not only affects your bills but can also put undue stress on the entire air conditioning system.  This excess strain can wear out the system faster, leading to premature failure.

Persistent Problems

If your air conditioner consistently has issues, this can increase running costs.  Worn out or broken parts such as fans and motors can cause inefficient operation.  These components may still be working but inefficiently, causing your unit to draw more power to compensate for their decreased performance.  Running an AC in this state also increases strain on other components, causing a continual chain of problems.

Ductwork Defects

If the ducts that distribute air throughout the indoor space are leaking, your air conditioner must run longer to cool the home or workplace.  This leads to increased energy usage.  Air leaks can significantly reduce the AC system’s cooling ability, while also adding dollars to your power bills.

To prevent these inefficiencies from burning a hole in your wallet, it’s important to take action easy and often.  Regular DIY AC maintenance can help keep your air conditioner running as efficiently as possible.

If you still notice a spike in your bills without a corresponding increase in usage or rates, it’s a clear sign to contact a HVAC professional.  They can perform a comprehensive system check to identify inefficiencies, repair faulty parts, and help restore your air conditioning to its cost-effective glory and get your energy expenditure back on track.

Sign 3: Irregular Noises

An air conditioner in good working order should run relatively quietly.  Some whispers are normal, such as a  low hum or the sound of air whooshing through vents.  Some people even like these AC noises to help them relax or sleep.  However persistent or unusual noises can signal that air conditioner repairs are required.  These sounds often serve as the audible clues that something is going wrong internally.

There are several different sounds that you might be hearing:

Banging or Clanking

These sounds can indicate that a loose or broken part, such as a blade, shaft, or other internal component, is knocking around inside your unit. This could cause significant damage if not addressed promptly.

Squealing or Screeching

High-pitched noises might suggest that the fan belt connecting to a motor has slipped or that bearings in the fan motor are starting to fail.  It’s not a sound to ignore, as it can precede a major breakdown event.

Buzzing or Humming

A buzzing sound can denote electrical issues, such as a failing motor, loose wiring, or other electrical components that are malfunctioning or not properly secured.  It can also be connected to a refrigerant issue in some instances.


Constant clicking sounds when the unit cycles on and off might point to a relay problem.  While a single click is normal when the system starts up or shuts down, persistent clicking is not.


This noise can be a telltale sign of a refrigerant leak or a ductwork issue.  Both are significant concerns that require immediate attention.

Stage 2 refrigerant leak detected with testo gauges

What to do when faced with these unsettling sounds?  First step is to shut down your AC system to prevent further damage.  Then it’s important to act quickly and call a professional technician to investigate the noise.  They can pinpoint the source and make the necessary repairs before minor noise issues turn into major mechanical failures.  Keeping an ear out for these audible anomalies can save you time, money, and the discomfort of living through a heatwave with an inoperative air conditioner.

Sign 4: Increased Cycling

Air conditioners are designed to go through relatively routine heating and cooling cycles, with the frequency increasing on the hottest days.  If you notice that your system is cycling on and off more frequently than usual, this could be a clear indicator that it’s time for some repairs.  Frequent cycling can put extra stress on your air conditioner and could lead to a decrease in its lifespan if not addressed promptly.

There are several possible causes behind this erratic behaviour:

Controller Concerns

If the AC wall controller includes the thermostat and is not accurately gauging the temperature, this can cause the air conditioner to turn on and off more frequently than needed.  An uncalibrated or malfunctioning controller might be the culprit behind the erratic cycling.

Oversized Operation

An air conditioner that is too large for the area served will cool down the space quickly, then shut off, only to turn back on a short while later when the temperature rises again.  This rapid on-and-off cycle can cause excessive wear and tear on internal components.  This situation often occurs when a room size has been changed (e.g. Home renos, office reconfiguration, etc.), or the heat load has changed (e.g. removed old heat-generating TV, added block out blinds, staff reduction, etc.).

Clogged Components

Restricted airflow due to a dirty air filter or blocked heat exchange coils can cause an AC unit to overheat and shut down.  Once it cools a bit, it will start up again, thus creating a cycle of frequent on and off that’s hard on the poor aircon.

Reduced Refrigerant

Refrigerant is essential for cooling in the air conditioning cycle.  If there is a refrigerant leak and reduced levels internally, the system might cycle on and off as it struggles to maintain the desired temperature.  This requires urgent air conditioner repairs due to the potential harm to you, your family, the aircon equipment, and the external environment.

To prevent these short cycling issues from affecting your comfort and your air conditioning efficiency, regular maintenance and timely repairs are key.  Replacing or cleaning the air filters, checking refrigerant levels, and ensuring the controller is working as designed are good first steps.

If the problem persists, it’s time to consult with an HVAC professional who can accurately diagnose the issue.  Ignoring frequent cycling can lead to bigger problems, so take this sign as a prompt to seek AC repairs ASAP.

Sign 5: Ice Build Up

When it’s scorching outside, finding ice anywhere can seem like a cool surprise.  However, if you find ice build up on your air conditioner coils, it’s no cause for celebration—it’s a red flag.  Ice on the evaporator coils of AC unit indicates a problem that could stem from multiple areas, impacting performance and potentially damaging the air conditioning equipment.

There are several common causes that explain the chill behind the frost:

Blocked Blower

When air filters are clogged or the indoor fan blower is restricted in any other way, it can prevent the evaporator coils from absorbing sufficient heat.  This causes condensation on these indoor heat exchange coils to freeze.

Low Levels

Refrigerant is what AC systems use to absorb heat from the air inside your home.  If there’s a low level of refrigerant in the system, it can cause the remaining refrigerant to become too cold as a result.  This leads to ice formation.

Malfunctioning Motors

Fan motors help in transferring warm air over the coils.  If they aren’t functioning correctly, then not enough heat is absorbed.  As a result, the coils can freeze over.

Caked Coils

When AC coils are caked with dirt, mould, grease, or any other matter, they are essentially insulated.  This prevents them from absorbing adequate heat, which can eventually cause ice to form.

HVAC repair service tech hosing and cleaning off coils

If your air conditioner turns into a popsicle maker, there are a few things you can do.  First and foremost, turn the system off to prevent further damage and allow the ice to melt.  Then check and make sure the filters are clean, cleaning or replacing them if needed to ensure proper airflow.

Once any ice has melted and only if safe to do so, then inspect the coils for dirt and fans to see if operating.  Then, or at any step before, call in a professional.  An HVAC technician can safely check over the system, pinpoint the issue/s, and handle any aircon repair indicators such as refrigerant shortage or blocked coils.

Ice on AC coils is more than a minor inconvenience—it can lead to a complete system shutdown if ignored.  By responding to the sign of icing up, you’ll help ensure the air conditioner keeps its cool without any frosty surprises.  The only place you really want ice is in your summer drink!

The Importance of Air Conditioning Repairs

Procrastination may be a natural part of human nature, but best to be avoided when it comes to the health of your air conditioning unit.  Attending to repairs in a timely manner helps ensure your air conditioner is operating correctly, efficiently, and ensures you get the most out of your investment.

Prompt air conditioner repairs can also significantly improve the air quality in your home or office by preventing issues such as mould growth or the circulation of allergens.  Some air conditioning brands have additional technology to help with allergies, but this is only one part of the solution.  The filters and internal components can harbour bacteria and disease, which can be blown out into the indoor area if an aircon is not serviced or repaired when needed.

A well-maintained air conditioner is synonymous with energy efficiency.  An aircon in need of repair can consume more electricity and skyrocket your power bills.  Issues like blocked airflow, refrigerant leaks, or faulty components force the unit to work harder, leading to inefficiency and energy wastage.  In comparison, quick AC repairs keeps your system running smoothly.  It also helps to preserve the indoor environment, outdoor environment, and contents of your wallet.

During the hot summer months in Queensland, the last thing you want is air conditioning breakdown.  A well-maintained AC isn’t just about physical comfort; it’s about peace of mind.  The reliability that comes from a properly serviced air conditioner means you can focus on enjoying summer days rather than worrying about when the next aircon outage will be.


As we’ve discussed, there are five critical signs indicating air conditioning repairs are needed.  Each signal a cry for help from your unit —a plea for air conditioner repairs ASAP.  If the cries are heard and attended to, this can save you time, money, and discomfort in the long run.

An efficient, functional AC system isn’t just a convenience, it’s a necessity in regions like Brisbane, Gold Coast, Sunshine Coast, and Ipswich.  Keep an eye and an ear out for these signs, and never underestimate the value of acting quickly.  Your air conditioner, and everyone who enjoys its cool relief, will thank you!

Air conditioning gold coast receptionist ready to take bookings now

Calling for Air Conditioner Repairs Near Me?

If you’ve noticed any of the signs we’ve discussed, or if it’s simply been a while since your last service, then it’s time to take action.  Don’t wait for the heat to rise and your AC to fail.  Take the initiative now!

Contact a trusted HVAC professional to inspect and repair your air conditioning system.  They have the expertise and equipment to accurately diagnose issues and resolve.  The aim is to ensure that your air conditioning units are in optimal condition, ready to handle the heat of a hot and humid Queensland Summer.