Common Air Conditioning Problems and How to Fix Them

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Air Conditioning Problems

Air conditioning is essential for keeping your home cool and comfortable during the hot Australian summers. However, like any other appliance, air conditioners can encounter problems and breakdowns that can disrupt your comfort. In this article, we will discuss some of the most common air conditioning problems and how to troubleshoot and fix them.

Understanding Your Air Conditioning System

If you’re a homeowner in Australia, you rely on your air conditioning to keep you cool during the warm summer months. Understanding how your air conditioning system works is important to ensure its efficient running.

There are two main types of air conditioning systems: central air conditioning and ductless air conditioning. Central air conditioning, often called HVAC (heating, ventilation, and air conditioning) systems, are typically found in larger homes and commercial buildings. Ductless air conditioning systems, on the other hand, are smaller and perfect for small homes and apartments.

No matter what type of air conditioning system you have, it has three main components: the evaporator, the compressor, and the condenser. The evaporator is responsible for cooling the air, the compressor pumps refrigerant through the system, and the condenser expels the hot air outside.

Central Air Conditioning Systems

Central air conditioning systems consist of two units: the indoor unit and the outdoor unit. The indoor unit typically contains the evaporator, which is responsible for cooling the air. The outdoor unit houses the compressor and condenser.

Central air conditioning systems are connected by a series of ducts, which carry the cooled air throughout the building. The ducts also carry warm air back to the evaporator to be cooled again.

One of the advantages of central air conditioning is that it can filter and purify the air, helping to remove allergens and pollutants.

Ductless Air Conditioning Systems

Ductless air conditioning systems are smaller and more compact than central air conditioning systems. They are typically mounted on a wall or ceiling and have a separate outdoor unit.

Unlike central air conditioning systems, ductless systems don’t require ducts to transport the cooled air. Instead, they use a series of small pipes to carry refrigerant between the indoor and outdoor units.

Ductless air conditioning systems are ideal for small homes or apartments, as they are more energy efficient and can be adjusted to cool specific rooms or areas.

Common Air Conditioning Problems and Troubleshooting Tips

If your air conditioner is not functioning properly, there could be a number of reasons why. Here are some of the most common air conditioning problems and troubleshooting tips to help you get your system back up and running smoothly.

1. Inadequate Cooling

If your air conditioner is not cooling your home enough, there may be a number of reasons why. Before calling a professional, there are a few things you can try:

  • Check that your thermostat is set to the correct temperature and that it is set to “cool”.
  • Clean or replace your air filter. A dirty or clogged filter can restrict air flow, which can reduce the efficiency of your system and cause it to work harder than necessary.
  • Check the outdoor unit to make sure it is not blocked by debris or overgrown vegetation.

If these steps do not solve the problem, you may need to call a professional to diagnose and repair the issue.

2. Strange Noises

If your air conditioner is making strange noises, it may be a sign of a problem. Here are some common noises and what they may indicate:

  • Banging or clanking – may indicate a loose or broken part.
  • Hissing or whistling – may indicate a refrigerant leak.
  • Clicking – may indicate an electrical issue.

If you notice any strange noises, it’s best to call a professional to diagnose and repair the issue. Ignoring the problem could lead to more serious issues down the track.

3. Leaking Water

If you notice water around your air conditioner, it may be a sign of a problem. Here are some common causes:

  • Clogged condensate drain line – this can cause water to back up and leak out. A professional can easily fix this issue by cleaning the drain line.
  • Frozen evaporator coil – this can cause the coil to thaw and drip. A professional can diagnose and repair this issue.
  • Cracked or damaged drain pan – this will need to be replaced by a professional.

It’s important to address water leaks as soon as possible to prevent water damage to your home.

Importance of Regular Air Conditioning Maintenance

Regular air conditioning maintenance is crucial for the optimal performance and longevity of your unit. By scheduling routine maintenance, you can avoid costly repairs, improve energy efficiency, and extend the lifespan of your system. Here are some key reasons why regular air conditioning maintenance is so important:


One of the most important reasons to maintain your air conditioning system regularly is safety. Faulty wiring, worn-out parts, or leaks can all cause harm to your home and your family. Regular inspections and maintenance can identify potential hazards and offer timely repairs to prevent accidents.


A well-maintained air conditioning system runs more efficiently and consumes less energy, resulting in a lower power bill. By cleaning or replacing air filters, checking refrigerant levels, and inspecting ductwork, a professional technician can help improve your unit’s efficiency and performance.


Air conditioning systems that are neglected or poorly maintained are prone to breakdowns and premature failure. By scheduling regular tune-ups, you can extend the lifespan of your unit and avoid costly repairs or replacements down the line.

Professional Installation

Proper installation is key to the long-term performance of your air conditioning system. A professional installation ensures that all components are correctly sized and installed, and that the system is running at peak efficiency. If you are unsure if your air conditioning system was installed properly, schedule an inspection with a qualified technician to ensure optimal performance.

Regular Filter Cleaning

Cleaning or replacing air filters is critical to the performance of your air conditioning system. Dirty or clogged filters can reduce airflow and put additional strain on your system. Regular filter cleaning or replacement can ensure your unit is running efficiently and help prevent breakdowns.

Routine Inspections

Scheduling routine inspections with a qualified technician can help identify potential issues before they become major problems. A professional can detect refrigerant leaks, worn-out parts, and other issues that could cause your unit to break down. Routine inspections also help ensure that your system is running at optimal performance levels.

DIY Air Conditioning Maintenance Tips

Regular air conditioning maintenance is crucial for keeping your unit running efficiently and prolonging its lifespan. While some tasks require a professional, there are several DIY maintenance tips that you can do yourself. By following these tips, you can save money on energy bills and avoid costly repairs.

Clean the condenser coils

The condenser coils are responsible for releasing heat from the air conditioning unit. Over time, these coils can become dirty and clogged with debris, making it harder for the unit to cool your home. To clean the coils, turn off the power to the unit and remove any debris or vegetation that may have accumulated around the unit. Then, using a soft brush or vacuum, gently clean the coils to remove any dirt or grime. Be sure to avoid damaging the fins on the coils.

Check and replace air filters

The air filters in your air conditioning unit are responsible for removing dust and other pollutants from the air. Over time, these filters can become clogged, reducing the airflow and making it harder for the unit to cool your home. Check your filters once a month and replace them if they appear dirty or clogged. This simple task can improve your air quality and reduce your energy bills.

Maintain proper airflow

Proper airflow is essential for your air conditioning unit to perform effectively. Make sure that there are no obstructions around the unit, such as furniture or curtains. Additionally, check the vents and ducts to ensure that they are not blocked or obstructed. Finally, consider using a fan or ceiling fan to help circulate the air and reduce the load on your air conditioning unit.

Consult a professional

While DIY maintenance is a great way to save money and keep your unit running smoothly, some tasks require a professional. If you encounter a problem that you are not comfortable handling yourself, or if you notice a significant decrease in performance, it may be time to call in a professional air conditioning technician.

Ready to enhance your home’s comfort and air quality? Trust Alpha Air for all your air conditioning and heating needs. Whether you’re considering a split system, multi split system, or ducted reverse cycle installation, our experts have you covered. Contact us today to schedule a consultation and take the first step towards a more comfortable and efficient living space. Enjoy year-round comfort with Alpha Air’s reliable HVAC solutions.

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