Beat the Haze!

Some tips on how to choose an effective air purifier

Updated on August 15, 2017 16:08 pm

Suqi Ng

how to deal with bad whether like haze

The haze is back! We are advised to stay indoors when the air quality index reaches unhealthy levels. But how do we ensure that the air indoors is clean? An air purifier does the work.

bad haze in singapore
Photo by Ng Suqi

What is the best filter?

HEPA filters are probably the most popular filters in the market. HEPA stands for High Efficiency Particulate Absolute, and all HEPA filters are designed to pass the stringent requirements of removing 99.97 percent of airborne particles that are 0.3 microns in diameter.

HEPA filters remove dust, dust mites, allergens, pollens, plant spores, fungi spores, mold spores, and larger tobacco smoke particles.

HEPA filters do not remove most odours, gases, volatile compounds like paint smells, microorganisms like viruses and bacteria, and any particles that are smaller than 0.01 micrometers.

Some tips when buying a HEPA filter air purifier:

1. When buying an air purifier, always check the life expectancy of the HEPA filter. Don’t just go for the cheapest one. Remember to check for the cost of each filter replacement!

2. Don’t get tricked into buying a “HEPA-type” or “HEPA-like” filter. Some air purifiers uses filters that does not pass the HEPA requirements but marketed it with the “HEPA” term, so do take note!

3. As HEPA filters do not remove some particles and odours, it is good to get one that comes with carbon filter, anti-bacteria filter, and germicidal filter, depending on your needs.

Do I need a very high-end air purifier?

It depends on your room size. Do you plan to install the air purifier in a bedroom or in the living room? The living room will require an air purifier with a larger capacity.

A medium range air purifier that has capacity to purifier air for a 30 square meter (322 square feet) room will most likely be suitable for a typical HDB flat bedroom.

Some tips when choosing an air purifier:

1. If you need your air purifier to be portable so that you can move it to different rooms, you can choose one that is lightweight and has castor wheels.

2. Do note that the higher capacity air purifiers can also be bulkier and nosier. If you need the air purifier to be less noisy, say, silent enough to be switched on through the night, noise level will be an important factor, too!

Do I need the ionizer and ozone function?

The ionizer function of the air purifier acts as an active air-purifying component. The ions produced by the air purifier attach themselves to airborne particles, and remove them from the air. An air purifier that has this function does not only passively clean the air that goes through it; it also generates ions that clean the air outside.

An air purifier that produces ozone can remove living micro-organisms like mold, mildew, and bacteria. It will also remove bad odours and gases. However, high levels of ozone can also be harmful to health. The United States Environmental Protection Agency states, “When inhaled, ozone can damage the lungs.” It can cause discomforts to the respiratory tracts. If you want to choose an air purifier with ozone, do check that the machine has built-in safety factors.

Here are some air purifiers to keep your indoor air clean:

Europace air purifier

With Dual HEPA and NANO filtration, the Europace 5 Stage Air Purifier - EPU 92A, $499, removes 96.5% of airborne bacteria, and 100% of respirable suspended particles (smoke/haze). Available at the Cromly Shop.

Europace nano air purifier


The Europace Made in Korea Nano Air Purifier - EPU 70P, $299, Cromly Shop has a 4-in-1 function: Aromatherapy, Sterilisation, Deodorisation, and Purification, and performs 3-Step Air Purification (Ultra Plasma Ion Filter/ 3D Carbon Filter/ e-Nano Filter).




europace 5 stage air purifier

The Europace 5 Stage Air Purifier - EPU 406Q has a built-in ionizer, and has 99.97% Japan HEPA Filter + Carbon Filter.

What other things do I need to take note of?

1. Wipe furniture surfaces with wet cloth and vacuum and mop the floor regularly to keep the dust at bay. Learn how to thoroughly clean your home here.

2. In order for the air purifier to work effectively, place it where air can flow through it freely. Keep it a distance away from a wall or furniture.

3. Shut doors and windows for the air purifier to work effectively. When the air quality is bad, it is good to keep the windows closed.

4. Maintain the air purifier. Change the filters and vacuum or wash the washable parts regularly.

5. Drink more water. Water flushes out any toxins that go into our body.

6. Wear a mask when going out for prolonged hours.


Got any more tips on how we can beat this haze? Let us know by emailing us at hello@cromly.com!

Cover photo courtesy of D'Planner Pte Ltd

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