Singapore is one of the most developed countries in the world. Development is typically linked with pollution. Thanks to the action and rigorous efforts of Lion City, the air quality in Singapore remained Good to Moderate in 2020, according to the report of the National Environment Agency (NEA). The transportation activity reduction due to COVID-19 has contributed to the air quality. Nevertheless, some still buy an air purifier in Singapore for a breath of fresh air.

Many families rely on an indoor air purifier to improve the air quality in their homes. Companies also provide an office air purifier in their buildings in Singapore to ensure clean air in their workspaces.

It is not uncommon for homeowners and office managers to encounter problems with their indoor air purifiers. Don’t worry; these issues are typically manageable.

4 Common Problems Of An Indoor Air Purifier And How To Fix Them

Like any other appliance, yourindoor air purifieris prone to issues, especially if it is already old or poorly maintained. Some problems are manageable and don’t require you tobuy a new air purifier in Singapore.

Here are the problems you might encounter with your indoor air purifier and some tips on how to troubleshoot them:

PROBLEM #1: The air purifier does not turn on.

Are the indicator light and fan not turning on despite being plugged into the power? Perhaps, the indicator light is glowing, but the fan remains dead?

There are several reasons why your indoor air purifier is not turning on.

Firstly, the fuse of your machine must be broken or blown up. There could also be damage to your transformer coil and capacitor. Your cable must be damaged as well.

Secondly, if the indicator light is flickering; but the fan is not turning, an object must be obstructing the blades or turbines.

What to do?

If you are not familiar with the mechanism of your air purifier, it is better to call an air purifier and aircon services to repair it for you. But if you are confident enough with your knowledge, you can disassemble yourindoor air purifier.

Check the fuse of your machine for damage. If so, replace it with a new one. Look for burned marks on your transformer coil as well. It needs replacement if the transformer has short-circuited.

If the problem is an object trapped between turbines, remove it carefully. Do it whilst your home air purifier in Singapore Is off to avoid accidents.

PROBLEM #2: Flashing red light

You might be alarmed to see your best air purifier in Singapore flicker a red light. Don’t worry; it only means that your filter is already clogged with dirt and dust. The problem with filters is they don’ts show noticeable signs that it needs cleaning or replacement.

Some advanced indoor air purifiers notify homeowners through the red light.

What to do?

Firstly, determine what kind of filter you have. Most HEPA filters are disposable, meaning you cannot wash and reuse them. You can learn everything about your machine on the user’s manual guide.

You can find HEPA filters in the market. Typically, you have to change your filters every six months, depending on the brand.

You need to disassemble the external housing of yourindoor air purifier to remove the filter. Make sure to wear gloves, face masks, and goggles because you will be dealing with thick dust. Put the disposable filter in a trash bag and seal it tightly.

If you have a washable filter, use warm water and gentle dish soap to remove the dirt. Use a soft brush, sponge, or microfibre cloth to avoid damaging the filter. Air dry your filter before putting it back inside your indoor air purifier machine.

PROBLEM #3: Unusual Noise


If your home or office air purifier in Singapore produces unusual noises, such as rattling and buzzing, while running, it could be due to a foreign or loose object inside your equipment. You might have also installed your filter improperly.

What to do?

When you hear the unusual noise, power off your unit immediately and disconnect it from the power source. Wear your gloves and mask before disassembling the unit.

Inspect the mechanism of your unit for any loose parts. Make sure everything is tightly screwed to its place. Look for foreign objects that may have been causing the noise. Remove the debris if you find one or more.

If there are no foreign objects, check the filter and ensure it is installed properly. Try turning on your indoor air filter, and if there is still noise, call a repair service.

PROBLEM #4: Strange odour

There could be many reasons why yourindoor air purifieremits a pungent smell.

Firstly, it could be due to the smell wafting around the room. If your indoor air purifier does not use an activated carbon filter–a filter that neutralises odours–your air cleaner cannot 100% eliminate the smell.

You can expect the air to be smelly if someone is cooking aromatic food or smoking inside your home.

If no one is cooking, but yourindoor air purifier still emits a foul smell, it could be due to dead animals inside your machine or thick dirt building up in your filter.

If you smell smoke or something burning inside your indoor air purifier,turn off your equipment immediately and disconnect it from the power source.

What to do?

Firstly, disassemble your indoor air purifier. Look for dead animals inside the machine. Tiny animals, such as lizards, mice, and cockroaches, can crawl inside your machine.

Secondly, check your filter. Clean it or dispose of it if it is covered with dirt.

Lastly, look for burned marks. You can also sniff the mechanisms for the burned smell. If there are signs of burned wires or coils, don’t plug in the air filter. Repair your equipment immediately.


Isn’t it weird that the best air purifier in Singapore that is supposed to bring you fresh and healthy air will emit smelly and dusty air? Thankfully, these common issues with air purifiers are manageable and can be fixed on your own.

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