5 Common Signs an Air Conditioning Unit Is Breaking Down

Like other machines, air condition units may also fail over time. They can experience wear and tear and eventually break down. Although some air conditioning brands say that the life expectancy of an air conditioning unit can last up to 25 years, the most realistic expectancy is about 15 years.

However, air conditioning units will show signs that can lead to them breaking down, manifesting minor hiccups. If left unchecked, they may progress into significant problems that cause major damage to the unit. But which signs should people look out for? Here are some ideas.

1. Uneven Cooling

One of the most common signs that an air conditioner is failing is uneven cooling. It may not be as effective as it used to be, or it may not cool a room as efficiently as it used to. For example, if it took only a few minutes to cool a room before, it may take longer now.

Several factors can contribute to it, like dirt and debris buildup within the system, preventing the coolant from circulating properly. As a result, the coolant will not be able to absorb heat as well, causing the unit to work harder and not function as efficiently as it used to.

2. Weak Air Flow

Another sign that an air conditioner is having problems is weak airflow. If the airflow is inadequate, the unit is not working as efficiently as it should. There are several reasons, the most common being a dirty filter, usually clogged by dust, dirt, and other debris.

When the filter gets clogged, it reduces the airflow and prevents the unit from functioning correctly. As a result, the unit will have to work harder to circulate the air, causing it to use more energy and not operate as efficiently, leading to more expensive electricity bills.

3. Unpleasant Odor

If you notice an unpleasant odour coming from your air conditioner, it may signify a severe problem. A foul smell indicates that there is mould or mildew inside the unit. The air conditioning unit can produce unpleasant odours if it is not adequately maintained and cleaned.

Therefore, scheduling a maintenance check or routine at least once a year should prevent unpleasant odours from developing. Technicians can clean and avoid mould growth in air conditioning units, making them smell fresh and clean.

4. Leakage

Leakage from your air conditioner may signify a broken seal or a faulty compressor. A leaking air conditioner can cause water damage to your walls, floors, and furniture. Therefore, you should call a technician if your air conditioner leaks water.

By calling a technician, you can get your air conditioner repaired or replaced before it causes any further damage. Preventing leakages from worsening will also prevent mould growth around the house, causing various health concerns to the people in it.

5. Unusual Sounds

If your air conditioner starts to produce strange sounds or make noises never made before, you should call a technician, as it could indicate that it is wearing out and needs to be repaired. It is better to repair your air conditioner before it breaks down entirely.


Prevention is better than cure, even saving machines like air conditioning units. As soon as the first sign arises, it’s best to check the unit with skilled technicians to ensure the condition does not progress to a more severe problem, causing it to break down.

Jensen Property Maintenance is a property maintenance company specialising in air conditioning services. We offer a 24-hour callout service, ensuring clients get the help they need within a day after they report the problem to us. Learn more about our services and get a free estimate on our website today.