How to choose an air purifier

7 minute read |

Currently, Bangkok and major cities in Thailand have become one of the most polluted cities in the world due to exhaust emissions from vehicles and combustion from industries. Thus, air purifier has become one of the most popular household appliances these days. It helps to keep clean air in your home, filters dust and dangerous pollutants, which is beneficial for those who suffer from asthma, allergy, and other respiratory issues.

In this article, we will share with you the benefits of having an air purifier and how to choose an air purifier for your home. Furthermore, we will compare different types of Electrolux air purifiers in terms of features and functionality. Tips and hacks on how to use and maximize your air purifier will also be included.

Benefits of having an air purifier

What is an air purifier?

An air purifier is an indoor device that is used to purify the air, remove pollution, and improve air quality. It helps to filter dust, viruses, germs and bacteria, including unpleasant odors in the house, toxic gases and particulate pollution. The purpose of this device is to limit the spread of harmful residues or allergens and to prevent asthma or allergy problems related to air quality in people at risk (children, the elderly, etc.).

How does an air purifier work? Well, an air purifier is equipped with different filters, and each filter plays a different role in the process of air purification. An air purifier has to go through several stages to clean the air.

Firstly, the purifier draws in the air in the room to capture the particles. The air then passes through different filters that catch the various types of pollutants present in the air. After the process of removing impurities and pollutants, the device will push back the clean air into your living spaces.

PM 2.5 Dust and Benefits of an air purifier

We believe that Thai people are familiar with the term fine dust, or PM 2.5 dust. PM2.5 is particulate matter that can be found in the air. It is incredibly small — a single particle has a diameter of fewer than 2.5 micrometers. It is generated from industrial combustion.

Since they are so small and light, fine particles tend to stay longer in the air than heavier particles. This increases the chances of humans and animals inhaling them into the bodies. PM2.5 dust is harmful to people with respiratory problems, older adults, and children.

Having an air purifier in your home can help to reduce the level of fine dust and other pollutants in your home, as well as protect your family members from getting respiratory diseases.

Things to consider before buying an air purifier

Tips to choose an air purifier

In this section, Electrolux Thailand will share with you 4 tips to choose an air purifier, which are types of filters, room size, noise level, and price.

1. Types of filters

There are different technologies that air purifiers work on to effectively clean the air. Choose the product with suitable filters you want:

Pre-filter eliminates large particles like pet hair before the next stage of filtration. People having pets at home should choose air purifiers with strong pre-filter to get rid of pet hair.

HEPA (High Efficiency Particulate Air) filter is used to remove 99.97% of particles sized 0.2 microns or larger from the air. They are relatively effective against dust, pollen, mold, and dander.

People suffer from asthma or allergy should opt for air purifiers with HEPA filter. Note that some filters may not be certified to meet the requirements of a true HEPA filter, so research carefully before purchasing.

Activated carbon filters help in absorbing odors and gases, thus eliminate smoke, chemicals, food smell, and fumes. Activated carbon filters can quickly capture volatile organic compounds (VOCs), which is a compound released from burning fuel or release from household products. These gaseous pollutants can be harmful to everyone, especially if you have asthma or chemical sensitivity.

Antibacterial and germicidal filters eliminate harmful bacteria and germs.

2. Size of your room

The size of your room matters a lot when it comes to purchasing an air purifier. You need to make sure that the product is big enough to effectively purify the air in your room. For better performance, we recommend buying an air purifier that can operate in a space that is 20-40% larger than your room.

Also, the larger your room is, the higher CADR rating of the purifier you need. So what is CADR rating and why it matters when choosing an air purifier? CADR stands for Clean Air Delivery Rate that tells a consumer how efficient air purifiers are at removing a certain contaminant from the indoors. The three pollutants that are measured are pollen, smoke and dust.

The CADR rating reflects the volume of air in CFM (cubic feet per minute) that is cleaned of particles of certain sizes.

Typically, the larger the room, the larger the CADR rate you want. Manufacturers usually list the recommended CADR and room size on the guidelines, so read carefully when you buy a purifier.

This is the suggested CADR rate for different room sizes:

Room area (m2) Minimum CADR (cubic feet per minute)
26 200
40 300
53 400
66 472
88 688

3. Noise level

Electrolux air purifier

Not only does air purifying performance matter when considering an air purifier, but its noise level also plays an important role. The machine should always be running so ideally, they should also be quiet.

If you buy it for your bedroom or baby’s room, choose the air purifier that makes less noise so that you can sleep beautifully. For the living room, you can choose the one with multiple settings which you can change as you want.

In general, an air purifier with a noise rating of 50 dB is appropriate for most living spaces.

4. Air purifier price

How much does an air purifier cost? Getting an air purifier can be extremely important to health, especially for those who have allergies or asthma. However, there are many things to consider such as type of filter, room size, CADR and especially, price. Electrolux air purifiers have a wide range of price levels and capacities. You can select a suitable air purifier ranging from B5,990 to over B22,000. Check out our products on Shopee and Lazada.

Shop Electrolux air purifier on Shopee

Shop Electrolux air purifiers on Lazada

Summary of tips for choosing an air purifier

  • Calculate the size of the room that you want to put your air purifier
  • Look for an air purifier that meets your needs in terms of health and living environment
  • Compare CADR rating for better filtration performance
  • Choose the product with true HEPA filter
  • Choose an air purifier with carbon air filtration to remove VOCs
  • Look at noise levels in product specifications. Depending on where you're using your air purifier, you may want a quieter device.
  • Since an air purifier is a big investment, research the manufacturer’s repair and warranty policies carefully. Check out Electrolux’s warranty terms and conditions for air purifiers.

Discover more home appliances from Electrolux for your cleaner and healthier home!

Best Electrolux air purifier

Are you considering which air purifier to buy? Electrolux offers a range of air purifiers that provide you with cleaner air while achieving a powerful yet smooth air circulation.

1. For Large Rooms

Boasting an appearance similar to that of a stylishly designed speaker, the most noticeable feature of the Pure A9 Air Purifier is that it is compact yet modern.

Electrolux Pure A9 Air Purifier is suitable for rooms from 60 to 88m2 and comes with 5 stages of air purification:
  • Pre-filter: big particles filtration
  • Antibacterial coating: bacterial elimination
  • HEPA13: fine particles filtration
  • Active Carbon: gas filtration
  • Ioniser: reduce viruses

Here is the summary of technical specifications for Pure A9 air purifiers:

Room Coverage 60 to 88m2
Voltage 110 to 220V
Frequency 60 Hz
Number of filters 5
Wifi connectivity Yes
Filter system 5 stages purification: Pre-filter, Antibacterial layer, True HEPA 13 filter, Activated Carbon, and Ionizer
  • PureProtect neutralises up to 99.99% bacteria¹.
  • PureSense measures air quality and adjusts speeds.
  • Very quiet operation, even when at maximum speed.
  • PureProtect neutralises up to 99.99% bacteria¹.
  • PureSense measures air quality and adjusts speeds.
  • Very quiet operation, even when at maximum speed.

2. For Small and Medium-Sized Rooms

For smaller rooms from 26m2 to 53m2, you can consider purchasing Flow A3 or A4 instead.

This type of air purifier is equipped with a multi-stage filter that captures micro-dust (i.e. PM 1.0, 2.5), odors (i.e. Acetaldehyde), and harmful airborne substances (i.e. Formaldehyde) and lets you know in 2 stages of alert when the filter needs replacement.

UV-C lights remove and deactivate up to 99.99% of bacteria and dust mites for clean and healthy air at home.

Here is the summary of technical specifications for Flow A3 and A4 air purifiers:

Room Coverage 22 to 50 m2
Voltage 220V
Frequency 50/60 Hz
Wifi connectivity Yes
Wifi connectivity 4
Filter system 4 (Pre, Anti-bacterial HEPA 13, Activated Carbon, Ionizer Filter)
  • 5-step filtration with UV-C bacteria¹ removal.
  • Spiral outlet circulates filtered air¹.
  • Sensors measure air quality and adjust fan speeds.
  • 5-step filtration with UV-C bacteria¹ removal.
  • Spiral outlet circulates filtered air¹.
  • Sensors measure air quality and adjust fan speeds.

3. For limited space

If your homes have limited space, you can consider Electrolux Well A5 and A7 air purifiers. This type of air purifier is so lightweight that it can be carried in one hand by the handle. It also has two legs that can stand in a reclined position on the floor, or alternatively, hang on the wall to save floor space.

You can take a look at the comparison below to see the differences between the two models:

  Well A5 Well A7
Room coverage (m2) 39 45
Size (mm) 580 x 320 x 320 213 x 480 x 579
Voltage (V) 220 100
Frequency (Hz) 50/60 50/60
Number of Filters 4 5
  • 5-step ionizer filter removes bacteria³ & viruses.
  • 360° intake delivers clean air in minutes¹.
  • Lightweight, portable and adaptable design.
  • 4-step filtration captures PM2.5 particles¹.
  • 360° intake delivers clean air in minutes¹.
  • Lightweight, portable and adaptable design.

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