Common Air Conditioner Problems and How to Fix Them

Common Air Conditioner Problems and How to Fix Them

In the summer, especially when the heat is scorching, having an air conditioner is now considered a necessity rather than a luxury. It protects the interior climate by keeping your home cool during the hottest months of the year. Still, even the best AC units can struggle sometimes. Maybe you’ve observed that the previous efficiency of the system is no longer as high, and the room no longer cools as it used to.

There may be a clicking sound from the vents, or you may notice that your electricity bills suddenly go high. These are all indications that your air conditioner may need some attention. This blog will discuss these common AC problems in more detail and provide tips on Air conditioning fixes to deal with such issues.

Common Air Conditioner Problems

Your air conditioner comforts you during the hot summer months, but what if it stops working? To prevent frustrations and expensive inconveniences, one must learn how to identify and address issues promptly, regardless of their severity. So, let’s discuss each issue in detail.

Air Conditioner Not Cooling

Some of the worst or most annoying problems associated with air conditioners involve situations where your space is not cooled as required. Different factors cause this problem; some are blocked filters and need more refrigerant fluids.

When using an air conditioning system, it becomes very embarrassing if it does not cool the room as expected, especially during hot summer seasons. This issue affects your comfort and can ramp up energy use as the unit struggles to achieve the set temperature.

Insufficient cooling can stem from various complications, including system malfunctions, thermostat issues, or problems with the conditioner. In some cases, the air conditioner may appear to be functioning properly, but the air produced is minimal. This could be due to internal restrictions or compressor problems. A comprehensive understanding of these potential complications can help you diagnose and address the issue effectively.

Air Conditioner Leaking Water

Another issue we come across frequently is water leakage, and this is an issue that not only poses a challenge to the functionality of the air conditioners but also to the structure of your home. Water leaks are most common because the condensate drain line becomes blocked, which deters moisture formed during the cooling process from dripping down.

When the drain line is obstructed, the water accumulates, which can cause water damage to the unit’s surrounding area and may result in mold formation. Other signs associated with a water leakage include improper installation or positioning of the air conditioner. When the unit is not level, it creates problems with water drainage, leading to water leakage in the AC unit.

Also, there are problems with a low amount of refrigerant, so the evaporator coils may freeze, and when they drip, they may create water leakage. This indicates a critical issue that needs to be addressed quickly to avoid structural deformation and have a healthy indoor climate.

Air Conditioner Making Strange Noises

Any strange sound emanating from your air conditioning system must be taken as a warning of potential faults. These noises may vary from buzzing and rattling to squealing and banging, which are signs of car problems.

Any buzzing sound will indicate problems with the electrical wiring or parts that have become detached from the unit; rattling can be due to debris in the unit or specific parts that might have come loose over time. Not only do the noises destroy the quiet environment of your home, but they can also signal more serious problems with the mechanics.

Air Conditioner Not Turning On

An air conditioning system is one of the most essential home appliances, particularly during the hot season, and it cannot be enjoyable if it does not start. This problem may be rooted in electrical issues, faulty thermostats, or a tripped circuit breaker, among other causes.

Sometimes, the unit may be dead, resulting from poor wiring or blown fuses, and hence cannot be operated at all. Another possible cause for your air conditioner to shut off could be the failure of the unit’s internal parts, including the compressor or the motor. These are some of the issues that could be difficult to determine and, in most cases, might need a professional approach.

Air Conditioner Blowing Warm Air

A conditioned room where an air conditioner blows warm rather than cool air is disappointing and less effective. This problem can occur for several reasons, including when the amount of refrigerant in the system is insufficient to cool the air properly.

If there is a low refrigerant charge, there could be a leak that you may not have identified, or the system may have been undercharged during installations, which a trained mechanic best addresses. Moreover, warm air is sometimes caused by dusty air filters, which hinder the supply of cool air within the room or building.

There is nothing more dreadful than finding your well-ac Air Conditioner blowing warm air out, and it is vital to learn what is causing this failure to cool and maintain a good indoor climate.

The problems that usually occur above are the most common, but now we will throw insight into air conditioning fix tips in our next section.

So, let’s get started.

How to Fix Air Conditioner Problems?

Whenever you face issues with air conditioners, it may quickly become a difficult task to solve. Still, most of the problems people face when using air conditioners have simple solutions that anyone can work on. Here are a few of air conditioning fix tips you can leverage:

Fixing a Non-Cooling Air Conditioner

Is your air conditioner not cooling effectively? Here are some quick troubleshooting steps to get it back to peak performance.

  • You could begin with the air filter because it narrows the airflow whenever a filter is dirty, which causes the cooling system to become a problem. If the filter is messy, it must be replaced to ensure clean air is received through the proper flow.
  • Second, the outside unit must be cleaned, which checks for the accumulation of leaves, dirt, and other materials that can reduce air circulation by the outdoor unit.

If the unit is clean, the filter is new, and the issue remains, then it may suggest a significant problem like a low refrigerant level or a bad compressor.

Fixing Water Leaks in Your Air Conditioner

If your air conditioner is leaking, a clogged drain line could be the culprit. Here are a few simple steps you can take to fix the issue before calling a professional.

  • Begin by searching for the drain line, which should be marked near the condenser unit, and clear the blockages if they are present.
  • If you have minor blockages, try cleaning the system with a wet/dry vacuum or use hot water and vinegar to flush the line out.
  • Check the condensate pump for any indications of damage or debris to confirm that it is in good working condition.

If these DIY solutions do not work, it is advisable to seek the services of a professional HVAC technician who can thoroughly examine and repair the drainage, thus eliminating all eventualities of further leakage and water damage.

Addressing Strange Noises

If your air conditioner is making unusual noises, it might be due to loose panels or debris. Here are a few steps you can take to identify and address the problem.

  • Start by inspecting the outdoor unit for any visible debris or loose panels causing the noise.
  • Tighten any loose screws or bolts and ensure all panels are securely in place. If the noise persists, further investigation by a professional technician may be required.
  • They can diagnose the noise source, whether a mechanical issue or something else and perform the necessary repairs to restore quiet operation to your AC unit.

Troubleshooting an Air Conditioner That Won’t Turn On

Having trouble with your AC not turning on? Follow these quick steps to troubleshoot and potentially resolve the issue yourself.

  • Check that your thermostat has adequate batteries so they do not run out of charge when used.
  • Secondly, check the circuit breaker or fuse box to determine whether the failure in the power supply to the AC unit results from a tripped breaker or a faulty fuse.
  • Restore any tripped circuit breakers to their position or install new fuses as necessary.

If these initial steps don’t resolve the issue, it’s crucial to recognize when it’s time to seek professional help.

Fixing Warm Air Issues

It may not be pleasant to get warm air out of your AC vents instead of cool air, but several issues contribute to this, and various remedies exist below.

  • First, ensure that you have set the temperature at the right level and that it is in cooling mode; if not, adjust the thermostat.
  • Check whether the air filter is clogged with dirt that may hinder fresh air circulation in the room and make the air conditioner blow hot air.
  • One of the most common causes could be the filter being dirty; this needs to be changed so that the air circulates appropriately and is cooled.
  • As a result, if the air filter is clean, the thermostat settings will be appropriately adjusted, and the dryer air will still be produced. There may be a more severe problem, like low refrigerant levels or a bad compressor.

In such conditions, it is advised to seek the help of a professional HVAC technician who can identify the problem and fix the issue to bring your AC back to its intended purpose of cooling the home.


In this blog, we have highlighted some common air conditioning issues that can be faced during the hot summer climate and the possible troubleshooting measures to handle them. This brings up the fact that while there is a high probability that many AC problems can be fixed without professional assistance, not all issues can be fixed.

At Infiniti Home Comfort, we provide professional solutions in the field of HVAC to solve all your air conditioning problems. Our team of experts handles all kinds of projects for commercial and residential needs, including regular maintenance, repairs, and new system installations, to provide you with the best HVAC services in Toronto and GTA. You can call us immediately for a service or consultation to ensure your air conditioner is always in its best shape.


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