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Blueair 405 review

Key features
  • HEPA filter
Reviewed

We've been impressed by Blueair air purifiers in the past, so was the 405 up to the task when we pitted it against a barrage of dust, pollen and smoke particles in our test chamber? You can find out how this large air purifier performed, and what we made of the companion smartphone app, by reading our full review.

Included in our expert review
  • Pros and cons
  • What is it?
  • What's it great at?
  • Is there anything I should look out for?
  • Is there anything else I should know?
  • Should I buy it?
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Test results

The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.

Find out how we test air purifiers
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Compare retailers

Price updated daily

Prices are ordered from lowest to highest, irrespective of retailer rating, delivery price or stock. We are not able to show every possible online retailer and do not include high street only retailers.

RetailerRetailer ratingPriceDeliveryIn stock
John Lewis & Partners
Not rated
£499.00Free
Go to store

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Make smarter choices

We have tested 37 air purifiers and found that there are 7 Don't Buys and 9 Best Buys.
Range of Air purifier scores
  1. 20%
    Lowest score
  2. 60%
    Average score
  3. 85%
    Highest score
We'll show you where this model sits on the scale so that you can see how it compares to air purifiers we've tested
Try Which? for £1
You can cancel at any time

Put us to the test

Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.

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