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Common Problems

Why is Your Aircon Not Blowing Cold Air And How To Fix It

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On a hot and humid day, the last thing you want to happen is walk into your room and discover that your air conditioner has stopped blowing cold air. If you happen to run into this issue, the first thing you’ll want to do is get it fixed right away. But in order to solve it, you’ll need to discover what’s possibly causing the problem. And there are a lot!


Is it a faulty thermostat? A dirty condenser coil? A leaking refrigerant? In this article, we discuss the possible reasons behind an aircon that has stopped blowing cold air — and the necessary steps that you need to do to resolve the issue.


Aircon Not Cold: 10 Reasons Why Your Unit Has Stopped Blowing Cool Air

1. Air filter is dirty or clogged


A dirty or clogged air filter is a common culprit that causes the air conditioner to stop blowing cold air.


This usually happens when a lot of dust and dirt particles have accumulated in the filter, causing it to impede or block the airflow. When there is difficulty in the air circulation, it can often result in reduced cooling. In worst cases, zero presence of cold air can be experienced.


If this is what’s causing the problem, don’t worry. You can easily clean the air filter by taking it out of the unit and scrubbing it with dishwashing soap and water. However, if you want to ensure it gets done right, you can always get professional help from an aircon servicing company.

For air filters that are beyond cleaning, a replacement is your next best bet. Simply ask your aircon technician of the best place to get one and have it installed.


2. Condenser coil is clogged with dirt


The condenser is an essential part of the unit that plays an important role in producing cold air. When it gets blocked with dirt, cool air has difficulty in flowing through your room. In other cases, these particles usually block the condenser itself from functioning.


Once the condenser’s performance gets reduced due to these issues, it can also prevent the air conditioner from hitting the desired temperature set in the thermostat. Bummer, right?


To prevent this from happening, always keep the condenser coil clean and dirt-free. When you have your air conditioner serviced and maintained regularly, make sure to get condenser cleaning in the mix.


3. Compressor is broken


When the compressor motor gets broken, the refrigerants and coolants will be unable to circulate inside the machine. This will then disrupt the cooling cycle and result in low or no cooling.


If this is the case, you need to get the motor checked by an aircon servicing company or professional right away. You can have it repaired or replaced to get your aircon blowing cool air again.


4. Thermostat is acting up


The air conditioner thermostat functions by setting the desired temperature of the unit. It’s also responsible for regulating the temperature of the room and giving suggestions to improve the cooling experience.


So imagine when this essential air conditioner function and part starts acting up. You can expect reduced and inaccurate cooling temperatures in your unit. In worse cases, you get no cooling at all.


Once you start experiencing this problem, make sure to have it repaired or replaced by your trusted air conditioning expert right away.


5. Refrigerant is leaking


A leaking refrigerant is a common cause of this problem for many residents in Singapore.


The leaks usually happen when there are cracks or holes in the coils that circulate the refrigerant. This is usually accompanied by a hissing or bubbling sound — a clear sign that should call for an immediate repair and never be ignored.


6. Evaporator is dirty


A dirty air conditioner evaporator can cause the unit to work inefficiently and ineffectively once left uncleaned. The dust and dirt particles make it nearly impossible for cool air to pass through the unit, causing you to feel extra hot and sweaty all day.


To prevent this from happening, you should always aim to clean the evaporator at least once a year. This is already an easy maintenance scheduled to follow, as air conditioner filters and casings are expected to get the squeaky clean treatment quarterly.


7. Condenser is frozen


Aside from dirt accumulation and clogging, a frozen condenser is a usual culprit that can transform your air conditioner from hero to zero in terms of cooling.


When a condenser is frozen, it has a hard time functioning to help the unit in producing cold air. This results in reduced or no cooling from the unit. Sounds annoying? You sure bet.


If you ever happen to run into this issue, make sure to contact a professional to defrost the part and give it a full and thorough clean.


8. Air conditioner is small for your room


If you’ve gone through each possible reason on the list and are still unable to pinpoint the problem, then it’s time to consider whether your air conditioner’s size is too small for your room.


A lot of Singaporeans often make the common mistake of getting an air conditioner that is unsuitable for their large room’s size and scope. The result is what you would normally expect — the aircon has a hard time cooling the area, which can often be mistaken for a problem on its part.


That’s why it’s always important to consider the size of your room and how it compares to the air conditioner that you’re getting. Before making any purchase, you can always consult with sales representatives or technicians to help you choose the best air conditioner size for your room.


Solve Your Aircon Problems with Luce Aircon

Having an air conditioner that has stopped blowing cold air is a problem that needs to be solved right away. Without the ability to cool your room, the unit will be rendered completely useless — something that should never be the case for something you’ve splurged on with your hard-earned money.


If you start experiencing any of these problems, contact us here at Luce Aircon! Book an appointment with us now and we will ensure that you get the help and service to resume your air conditioning experience as soon as possible.

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Staff Writer

Staff Writer

This article is written by our passionate staff writers who seek to share our knowledge from our business

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