When it comes to air quality, the UK is divided into 43 zones. According to the latest Air Pollution in the UK report by the Department for Environment Food & Rural Affairs, only seven zones are fully compliant when it comes to the levels of pollutants in the air.

If you live in an urban area, you know that smoke, dust and fumes can be a real problem. Luckily, air purifiers can be used to control such health hazards and improve air quality effectively.

The market brags a lot of variety, making it difficult to decide which option is the right one for you. Going through reviews and comparing options side by side are both very important.

The Blueair Classic 405 is a high-end air purifier. Quite expensive in comparison to other appliances on the market, but this one has many excellent features.

Is it worth buying for your home, however? The following review will detail the functioning, the benefits and what it does right and what it does wrong.

An Overview Of the Blueair Classic 405

Blueair Classic 405Blueair Classic 405 has exceptionally high air cleaning capacity certified by the Testfakta (a Nordic independent testing and research facility). In the Testfakta examination, Blueair Classic 405 received a score of 8.4 out of 10 points. This score is the highest as far as air cleaning capacity is concerned.

Blueair itself is a Swedish company that specialises in the development of air purification systems. The company was founded over two decades ago, and since the start, it’s been run by an experienced team of designers and filtration experts.

Known for high-quality Scandinavian design, the company distributes its products in over 60 countries across the world.

Blueair Classic 405 is one of the most popular models for at-home use within the brand’s range. This air purifier ranks among the more expensive models. Based on its features, however, it’s easy to conclude that it offers an excellent price to quality ratio.

Main Features

Blueair Classic 405 is a wi-fi enabled air purifier. This means that it can be controlled through any device that’s connected to the internet. It is compatible with the Blueair Friend app developed by the company for the effortless utilisation of its wi-fi appliances.

The air purifier is optimal for mid-sized rooms of up to 40 square metres.

The air-cleaning capacity of the machine is excellent. Several institutions recommend Blueair Classic 405 for the households of individuals with asthma.

Blueair Classic 405 Control PanelThe appliance brags the Blueair HEPAsilent technology that utilises both electrostatic charge and mechanical filtration to deliver results.

Blueair Classic 405 can effectively get rid of 99.97% of airborne pollutants (dust, smoke, VOCs, pollen, pet dander and other kinds of allergens). On top of that, there’s a SmokeStop filter (sold separately) to ensure even better carbon-based filtration.

Other key features worth mentioning include:

  • 3 fan speeds to choose among
  • Very silent operation that doesn’t disturb everyday activities or sleep during the night
  • Highly energy efficient operations
  • CADR air rate of 510 cubic metres per hour for dust and pollen
  • 5 air changes per hour
  • Remote control available on top of the wi-fi enabled operations
  • Timer
  • Filter replacement indicator

Styles and Models

Blueair Classic 405 is the company’s model recommended for medium-sized rooms.

The product range features several other models that are better for larger or smaller premises.

Blueair Classic 205 is the smaller product that’s ideal for rooms measuring up to 26 cubic metres. Since it’s meant for smaller spaces, the design of this air purifier is much more compact.

Blueair Classic 505 is excellent for rooms of up to 65 square metres,

Blueair Classic 605 – up to 72 square metres and Blueair Pro XL is the biggest member of the family that can be used in spaces of up to 110 square metres.

There are also two “I” members of the family. Blueair Classic 280i, 480i and 680i are recommended by the Asthma and Allergy Association as optimal choices for people with asthma.


The biggest advantages linked to using the air purifier include the following:

  • Very effective, gets rid of most common types of air pollutants and allergens
  • Certified performance (by a number of reputable institutions)
  • Highly energy efficient
  • Provided with a manufacturer guarantee of five years
  • Very silent operations
  • Wi-fi connectivity and usability through the Blueair app (as well as remote control use)
  • A perfect choice for asthma sufferers


Naturally, there are some downsides. The key shortcomings are:

  • Expensive in comparison to other air purification appliances
  • A somewhat bulky design prevents the appliance from blending seamlessly in a room’s interior
  • Some less expensive models tend to feature multiple forms of filtration (which is available for the Blueair Classic 405 but sold separately)
  • Lacks smart sensors to provide information about air quality

Reviewers who already own Blueair Classic 405 report that the change in air quality is sensible after the installation of the appliance. There are no two opinions when it comes to the quality of the filtration. Thus, if you’re considering the purchase of a Blueair purifier, you can rest assured it will get the job done.

Final Verdict

Blueair Classic 405 RatingsThe Blueair Classic 405 is made in Europe and certified for its high level of effectiveness. These two characteristics, however, contribute to a sensibly higher price than the cost of some similar counterparts.

The appliance itself and the brand have many fans across Europe and in the UK. Blueair Classic 405 is a very popular model because its capacity is suitable for medium-sized rooms.

If you are not concerned about the price and you’re seeking quality with a certificate, you will enjoy everything that Blueair Classic 405 brings to the table. The appliance is wi-fi enabled, and you can control it from home and while you are at the office. Hence, this is a great choice as far as home automation is concerned.

The high price is the biggest turnoff for potential buyers interested in improving air quality at home. It’s also important to keep in mind the fact that the appliance is somewhat big and bulky. But, this is a case of you get what you pay for, with it’s features and efficiency, this really is one of the best air purifiers available.