3 Common Air-Conditioner Problems and Solutions


Singaporeans depend a lot on air-conditioners to stay cool, either at home or in the workplace. However, the maintenance and repair of air-conditioners do not come cheap and the cost of hiring a professional each time that a slight problem arises with your A/C may leave your wallets wailing in desperation. Being informed of the ways that you can troubleshoot simple A/C problems will not only save you a ton of money but also leave you feeling fulfilled (you’re on your way to becoming a regular expert at DIY!). Read on for the 3 most common air-conditioner issues and how you can resolve them on your own with the use of a few simple household tools.


1)  The room is not cooled

So your air-conditioner is turned on and the thermostat is set on the usual settings. After about 15 minutes, however, you find that the temperature in the room has not changed at all. This means that there is something that is obstructing the cold air from circulating out of the unit and into the room. At this point, you will want to head over to where the external unit of the air-conditioner is located and clear away any debris that may be blocking circulation. 

Next, turn the air-conditioner unit off and open the flap of the unit. Some air-con units have a filter cover that needs to be removed with a screwdriver; undo the filter cover and slide the filter out of the unit. Hold the filter up; if you can look through it, it does not require any cleaning. If it requires cleaning, wash it by first diluting some dishwashing liquid in water, then dip a small brush into the liquid and gently brush the filter. Leave the filter out to dry and before placing the dried filter back into the air-con unit, use a vacuum to clear the filter of any dust.

You will need to check the air-conditioner filter regularly if you have it turned on very often.


2)  The air-conditioner is not emitting cool air

This problem is different from the first one in that in this case, the unit is not even producing cold air. This could mean that there is insufficient refrigerant (the chemical inside the unit that helps cool the air) inside of the air-conditioner and a top-up is in order.

While you can recharge the air-conditioner unit on your own, it is essential to find out and repair the leak that is causing the refrigerant to run out as this usually never happens under normal circumstances.


3)  Leaking unit

This is perhaps one of the most common complaints that homeowners have about their air-conditioner – a leaking unit. This could be caused by a number of problems that include dirty A/C filters, a blocked pipe and the formation of ice on the cooling coils.

Dirty filters can be easily resolved by removing the filters and giving it a gentle scrub with some diluted dishwashing liquid and/or by vacuuming. Blocked air-con pipes are the ones that are usually linked to the bathroom closest to the main air-conditioning unit and you can check them for any blockage. Ice forms on the cooling coils that are located inside the air-conditioner unit if the temperature drops and this ice melts when the temperature rises again at some point, causing it to leave the unit by simply dripping out of it, thus causing the unit to leak. You can check the coils for any ice formation yourself, but to remove the ice will require the services of a professional.


It is crucial to fix any air-conditioner problems before they escalate as it will cost a lot more to repair it if the issue gets worse. Save yourself the inconvenience of having to live with a spoiled air-conditioning unit by addressing the issue early on. If you are unsure of how to fix a problem yourself, it is advised that you seek professional help from skilled servicemen.