The Best Air Purifier

Posted on 17 May 2022

After 21 hours of research and the comparison of 23 models, including the testing of 6 of them, the Pro Breeze PB-P01 air purifier stands out thanks to its best price-quality ratio.

This comparison is certified 100% impartial and follows our selection process.

Our choice, Best budget

Pro Breeze PB-P01

This purifier has no less than four filtration systems and a negative ion generator for effective performance in areas up to 45 m².

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Pro Breeze PB-P01

In addition to a CADR of 218 m³/h, the Pro Breeze 5-in-1 is very complete in terms of filtration. Equipped with a stand-alone pre-filter, a HEPA filter, a cold catalyst filter, an active carbon filter and a negative ion generator, it is capable of neutralising a large number of pollutants, bacteria and dust present in the air. It can be set to three speeds and can be programmed 1, 2 or 4 hours in advance, for an automatic start or a stop.

 

 

Best mid-range

Xiaomi 3H

This purifier compensates for its more traditional filtration system with remote control possibilities (via Wifi) and voice control that will delight the most technophile.

£ 251.00 on Amazon

Xiaomi 3H

The Mi Air Purifier 3H has an astonishing throughput of 380m³/hr suitable for rooms up to 45m², but compared to its competitors, it only has three filters (a pre-filter, a carbon filter and a HEPA filter) to treat the air in the room. It can operate on three speeds and three modes (Standby, Auto and Favorite) and its low noise level is appreciated. A circle of light shows you the air quality in real time as it changes colour (green, orange or red), which you can also view on your smartphone using the Mi Home app. The app also allows you to set automatic switch-on and switch-off times to best suit your needs.

 

Best high-end

Rowenta PU4020F0

In addition to offering four levels of filtration, this device has air pollution sensors, allowing it to automatically adapt its filtration speed accordingly.

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This model is equipped with 4 types of filter: a pre-filter, an active carbon filter, an Allergy+ filter (HEPA) and a NanoCaptur filter (to capture formaldehyde, a gaseous pollutant). But beyond that, it is on its design that this air purifier justifies its top-of-the-range positioning, since it integrates pollution sensors adjustable on three sensitivities. The device’s operation is based on an Auto mode and a Night mode in addition to the four filtration speeds, but it also offers an automatic start or a stop function (1h, 2h, 4h or 8h). Thanks to a CADR of 160 m³/h, it can be used in a living room or between several rooms.

 

Our selection

Our choice, Best budgetBest mid-rangeBest high-end
Pro Breeze PB-P01Xiaomi 3HRowenta PU4020F0
Pro Breeze PB-P01Xiaomi Mi Air Purifier 3HRowenta PU4020F0
This purifier has no less than four filtration systems and a negative ion generator for effective performance in areas up to 45 m².This purifier compensates for its more traditional filtration system with remote control possibilities (via Wifi) and voice control that will delight the most technophile.In addition to offering four levels of filtration, this device has air pollution sensors, allowing it to automatically adapt its filtration speed accordingly.
Price search in progress... please wait
£ 251.00 on Amazon
Price search in progress... please wait

 

Honorable mentions

De’Longhi AC230 (£299,99 upon publication): a high-end alternative with UV filter. Suitable for areas up to 80 m², this purifier has no less than five different filter systems. The UV filter is effective against bacteria and gases and requires no maintenance. The air quality can be seen at a glance thanks to the LED indicators which change colour according to the level detected (orange if it is bad, green if it is average, blue if it is good), a level to which the Automatic mode alone adjusts the speed of the appliance (on three possible intensities).

 

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How to choose your air purifier?

Useful for controlling indoor air quality, but also if you suffer from allergies, asthma or other respiratory problems, air purifiers are difficult to choose because of the many models available on the market and their intended use.

Purificateurs d'air
In addition to the format, the functionality may vary from one model to another. | Source: Selectos

To understand how it works, it is necessary to be able to identify the different types of filters that exist:

  • The pre-filter: it removes large particles from the air (such as hair and pet hair) before passing it through the filter itself. If the filter was in constant contact with these large particles, the purifier would be less effective and less durable. The pre-filter is usually washable and is often made of woven nylon or foam.
  • The HEPA filter: this is the best known and most effective of all filters. It consists of a very dense paper that filters out most airborne pollutants, including the smallest particles. The word HEPA is usually accompanied by a number from 11 to 15. The higher the number, the more effective the filter. However, this type of filter has no effect on odours and chemical fumes.
Purificateurs d'air
Filters are certainly the most important element. | Source: Selectos
  • The ionic filter: this is a filtration technology that emits a cloud of negatively charged ions into the air. These neutralise dust, spores and fungi, VOCs, and even some bacteria and viruses.
  • The active carbon filter: with this system, several million absorbent pores suck in smoke, gases and odours. This filter is never used alone, as its primary function is not to remove particles that are harmful to health, but rather to rid the air of those that give off bad odours. Some claim to be able to eliminate formaldehyde, a gas emanating from household products, paints, glues, etc., but their effectiveness is not always proven.
  • The UV filter: this is a technology that emits an invisible light that attacks pollutants by using the UV-C band of the ultraviolet ray. Its main purpose is to kill bacteria and viruses to leave the environment clean and sterile. This technology works completely independently of the others. This type of filter is therefore used on its own, unlike the other three which can work together.
Purificateurs d'air
Air purifiers are useful for controlling indoor air quality. | Source: Selectos

Secondly, there are several criteria to consider when making a purchase:

  • CADR: it indicates the clean air production rate of the device and represents the ability of the purifier to remove cigarette smoke, dust and pollen. The higher the number, the more efficient the air purifier. Unfortunately, not all air cleaners display this information on their packaging.

Once theses concepts acquired, it is important to look at the main characteristics of the purifiers, which will allow us to refine our search and select only the best.

  • Features: while it is always comfortable to have several operating speeds, the presence of an Auto mode can be undeniably more comfortable since the unit automatically adjusts to the quality of the ambient air. A Night mode is also appreciated in bedrooms, as it reduces both the noise level and the light intensity of the unit.
Purificateurs d'air
A Night mode is appreciated to reduce the noise level. | Source: Selectos
  • Noise level: even during the day, the noise is obviously an important criterion to consider, especially if your air purifier is intended for a professional environment or for a night-time use. Air purifiers with HEPA or carbon filters always have a fan to accumulate the air to be purified, making them louder at full power.
  • Maintenance costs: HEPA and active carbon filter units require a filter change routine that must be followed carefully if you want an air purifier that lasts. This is to be expected, as these filters capture particles that can eventually clog them and prevent them from doing their job properly. So take a good look at the manufacturer’s recommendations and consider how much it will cost you each time you change the filter.
Purificateurs d'air
The noise level of the device is important if you use it in a quiet environment. | Source: Selectos
  • Dedicated application: some air purifiers work with a smartphone/tablet application that gives you access to a lot of more or less interesting data during the air cleaning phase. Some apps can even select the type of pollutants to be removed and give an indication of the air quality in real time. This feature, however, is usually reserved for high-end devices.
Purificateurs d'air
Some models work with an application. | Source: Selectos

Note that an air purifier does not have the same role as a fan (which blows air) or an air conditioner (which cools it), although some devices combine these functions.

 

Translated by Aylin Akturk 

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