Vax Air Purifier

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Product is rated as #13 in category Air Purifiers
Space efficient7
Area of Coverage9
VOC removal0

An option but without clear features


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Product summary

  • HEPA filter removes up to 99% of allergens, airborne pollutants and bacteria from the air stream
  • The Vax Pure Air 300 traps and removes particles from the air as small as 0.3 microns, helping to reduce the effect of allergies, asthma and hay fever.
  • Smart Sensor Technology monitors the quality of air and when needed, it adjusts the filtration speed to help maintain air quality.
  • Includes speed settings, sleep mode and a filter change reminder.

Our opinion:

Insufficient power

Vax Air Purifier filters dust and particulate matter with a Clean Air Delivery Rate (CADR) of 391 m³/hour. The CADR is the volume of clean air that the air purifier can deliver in one hour. What CADR do you need in an air purifier? The answer is: it depends on the size of the room. For an air purifier to be effective, it needs to filter the whole volume of air in the room at least 5 times per hour. This is because, as the air purifier cleans the air, new pollutants are coming in. So you need the air purifier to clean the air fast enough. This number of times that the whole air in a room is filtered is known as the Air Changes Per Hour. So, in summary, you need an Air Purifier that can provide a minimum Air Changes Per Hour of 5 for the specific room where you want to use it. The bigger the room, the less Air Changes Per Hour the same air purifier will be able to perform.

❕ The maker claims that the Vax Pure Air 300 Air Purifier is suitable for rooms up to 120 m2 (1291,67 sq ft.). However, in Stellar Air Cleaning we don´t agree with this statement.

If we make the calculation, for a room of 120 m2 (as claimed by the maker), and assuming a room height of 2,4 meters, for the CADR of the Vax Pure Air 3000 (391 m³/hour), the result is that there is only 2,3 air changes per hour. This is far below the required minimum of 5 air changes per hour.

VAX air purifier CADR

In order to get 5 air changes per hour, the room size cannot be bigger than 55 m2 (592,015 sq ft.).

Other features

It includes a remote control, which can be handy.

???? It also has a night mode: this is useful as it makes less noise, and therefore it’s ideal for sleep.

⁉ However, we haven’t been able to find any reference to HEPA filter on the Vax Purifier maker’s website. This is quite unusual, as most makers clearly highlight that their filters are HEPA. Therefore the lack of reference to them on Vax website makes us doubtful. Only for this, we can’t recommend this air purifier.

Also, since there is no comment at all about the presence of an Activated Carbon Filter, we can only guess there is none. Again, this is something that most makers will highlight. Purifiers with Activated carbon filters can clean not only particulate matter and dust, but also remove harmful gases (such as formaldehyde, or cigarette smoke ) from the air. We strongly recommend you to buy an air purifier with activated carbon filter.

vax air purifier

Vax Air Purifier replacement filters

This seems to be a recurring problem. Both in Vax´s website and in Amazon website, several customers complain that it´s impossible to buy new filters. The answers from the maker point to the fact that they were having stocking problems and ran out of filters for a while.  Users also complain that filters need to be changed every 6 months and they’re expensive (around 50 GBP per filter).

You can buy cheap Vax Air Purifier replacement filter on VAX official website, but you can buy it cheaper on this external site.

vax air purifier 300 replacement filter




7Expert Score
Not clear HEPA or Activated Carbon filter
An option but without clear features
Space efficient
Area of Coverage
VOC removal
  • Remote control
  • Sensor for the air pollutants
  • Low Power Consumption
  • Slick design
  • Not clear from the maker's site whether it has a HEPA filter
  • Not clear from the maker's site whether it has an activated carbon filter
  • Some users report it´s difficult to find replacement filter: they run out of stock

Specification: Vax Air Purifier

Ozone Free
Filters VOC
Size H76 x D32 x W32 cm
Area of Coverage 55
UV light No
Ionizer No
Max noise 66

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