Common AC Problems that Need Air Conditioner Servicing

air conditioner servicing

Obvious and recurring AC issues require immediate air conditioner servicing as much as possible to prevent the problem from getting worse. But the thing is that many homeowners are not familiar with or completely unaware of the signs of a faulty air conditioning system.

But just like any complex machinery, air conditioners can face a myriad of issues. 

That said, our article will walk you through some of the common problems that air conditioning systems experience, along with a few ways to remedy them. 

Common Problems with Air Conditioners

Air conditioner servicing is crucial because, like any complex machinery, air conditioners can experience a variety of problems. These issues may happen due to several different factors, like insufficient maintenance, wear and tear, or even changing environmental conditions.

Here are some of the most common problems you might face and what air conditioner servicing you might want to do with them.

Frozen Evaporator Coils

These are responsible for absorbing heat from the air in your home. If they get too cold, a layer of ice may build up on the outside. When that happens, your unit’s capacity to cool air will likely be reduced. Worse,  no air might come out from your air conditioning vents.


If you suspect the evaporator coils have frozen, the first step is to switch off your air conditioner. Immediately call a professional technician who will inspect the system. He will help you identify the cause, which could be anything from low refrigerant to poor circulation, and recommend appropriate solutions.

Leaking Ducts

The ductwork that runs through your walls and ceilings carries the cooled air from your air conditioner throughout your space. But if there are holes or cracks in the ducts, which can be caused by rodents or years of use, that precious cool air would not reach your living spaces effectively.


Fixing leaking ducts often involves sealing or replacing ductwork parts. The process is typically a job for a professional as it requires specific tools and knowledge to ensure the ducts are properly sealed and insulated.

Hence, rather than trying to fix it yourself, it is best to call an air conditioner technician right away.

Low Refrigerant

Your air conditioner’s refrigerant is what cools the air within your home. If it is leaking or there is not enough refrigerant, the system can’t cool the air properly, leading to ineffectiveness and higher energy costs.


To deal with low refrigerant levels, a trained technician will need to inspect your unit to see if there are leaks. Leaks will then be repaired, after which they can recharge the system with the correct amount of refrigerant.

Remember, fixing the leak is crucial—and adding more refrigerant is not sustainable or legal.

Broken Fan

Your air conditioner has two fans; one moves air over the evaporator coil to cool it, and another moves air over the condenser to expel absorbed heat outside the building. If either of these fans breaks due to a faulty motor, lack of lubrication, worn belts, or too much dirt, you could end up with poor airflow and air conditioner problems.


A broken fan can typically be repaired or replaced by a professional. The technician will determine whether the issue lies with the fan motor, belts, or lack of lubrication and take the necessary steps to fix it.

Blocked Condenser Coils

Condenser coils expel the heat removed from your air by releasing it outside. It is part of the separate unit in an air conditioner system, which is typically placed outside the house.

If the condenser coils get blocked by debris and dirt, they will not be able to perform their functions. It can lead to inefficiency and system failure if not properly fixed.


Regular cleaning is the most effective solution for blocked condenser coils. Remove any visible debris from the outdoor unit and schedule professional maintenance annually to ensure the coils are thoroughly cleaned and inspected.

Preventive Measures to Avoid Common Air Conditioner Problems

Preventive maintenance is key to keeping your air conditioning system running smoothly and effectively while avoiding problems.

That said, below are a few tips to ensure your AC unit stays in good shape:

  • Regular Cleaning. Dust and debris buildup can reduce your AC’s performance. Regularly clean the indoor vents and keep the outdoor unit clear of leaves, pollen, and grass.
  • Change Filters. Since filters are used to sift and block dust and small particles that should not get inside the air conditioner, changing it regularly is a must. Replace or clean the air filters regularly—usually every one to three months—depending on the usage and the type of filter.

    A clean filter improves efficiency and air quality.
  • Inspect for Leaks. Inspect your AC unit for refrigerant or water leaks. If you notice any, call a professional to fix them before they cause more significant issues.
  • Maintain the Thermostat. Ensure your thermostat is working correctly by checking the accurate temperature settings. Consider upgrading to a programmable thermostat for better energy efficiency.
  • Schedule Professional Maintenance. Have a professional technician service your air conditioner at least once a year. They will thoroughly inspect and clean, check for potential issues, and address any minor problems before they become major ones.

Secure Your Comfort Today: Schedule Your AC Maintenance with Landmark Air Canberra

Don’t wait for air conditioner problems to disrupt your comfort!

Schedule a professional air conditioner servicing with Landmark Air Canberra today. A well-maintained air conditioner delivers efficient cooling and saves you money on energy costs and unexpected repairs.

Contact Landmark Air Canberra at (02) 6189 2972 to schedule your AC maintenance service. Let us help you maintain your comfort and peace of mind.


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