Mistakes to Avoid when Installing a Window AC in Malaysia

Mistakes to Avoid when Installing a Window AC in Malaysia

Window air conditioners are a popular choice for Malaysian homes and businesses, as they are affordable and easy to install. However, if the installation is not done properly, the unit can be noisy and may not work efficiently. Here are some of the most common mistakes people make when installing window aircond in Malaysia, and how to avoid them:


Improperly Sized System

Homeowners who try to save money by installing their own window air conditioners often make the mistake of choosing a unit that is improperly sized for the space. While it may seem like a good idea to buy a smaller unit in order to save on initial costs, this can actually lead to higher energy bills in the long run. This is because an undersized unit will have to work harder to cool the space, leading to higher utility bills. An undersized unit is more likely to break down prematurely, costing even more money in repairs or replacement costs. As a result, it is important to choose a window air conditioner that is properly sized for the room in order to avoid these costly mistakes.

Wrong Positioning of Aircon

One of the most common mistakes made when installing a window air conditioner is positioning it in the wrong spot. Many people think that the air conditioner should be placed directly in the window in order to cool down the room as quickly as possible. However, this can actually cause the air conditioner to work less efficiently. The air conditioner needs to be placed in a spot where there is plenty of airflow so that it can properly circulate the cool air. Otherwise, the room will not cool down evenly and you will likely end up feeling uncomfortable.

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In addition, positioning the air conditioner in the wrong spot can also lead to condensation build-up, which can damage both the air conditioner and the window itself. To avoid these problems, be sure to consult with an aircond service specialist before installing your window air conditioner.

Wrong Positioning of Thermostat

When installing a window air conditioner, one mistake to avoid is wrong positioning of the thermostat. The thermostat should be placed on the side of the room where sunlight hits the most during the day. If the thermostat is placed on a wall that doesn’t get much sun, the air conditioner will run longer than necessary, wasting energy and costing you more money. The thermostat should also be placed away from any windows or doors to avoid drafts, as this can cause the air conditioner to cycle on and off more frequently than necessary.

Not installing the unit securely

One of the most common mistakes people make when installing a window air conditioner is not securing the unit properly. Most units come with installation instructions that clearly state how to secure the aircond in the window opening. However, many people either don’t read the instructions or don’t follow them correctly. As a result, their aircond units end up loose and rattling in the window, which can be both noisy and inefficient.

In some cases, an improperly installed aircond unit can even fall out of the window, causing damage to property or injury to people nearby. To avoid this mistake, make sure to take the time to read and understand the installation instructions before beginning the process. And if you’re unsure about anything, don’t hesitate to ask a professional for help.

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Not sealing the area around the aircon

Most people think that once they have installed their window air conditioner, the job is done. However, there are a few things you need to do in order to ensure that your aircond unit runs efficiently and doesn’t cause any damage to your home. One of the most important things to remember is to seal the area around the air conditioner. If you don’t, cold air will escape from the unit and warm air will enter.

Unsealed units can also lead to condensation and mold growth, which can be damaging to your health. So be sure to take the time to properly seal your aircond unit before turning it on for the first time. Otherwise, you might be in for some expensive repairs down the road. You can seal it with weatherstripping or caulk and make sure there are no gaps around the unit.


Installing a window air conditioner can be a simple and straightforward process if you take the time to do it right. However, there are many mistakes that people make which can cause problems down the road. To avoid these mistakes, be sure to consult with an expert before beginning the installation process. And once you have your air cond installed, remember to seal the area around the unit to prevent cold air from escaping and warm air from entering.

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