I'm impressed with the way they've done it and with how little energy it uses, but I've yet to see any evidence that (apart from for people with certain specific medical conditions) air purifiers are of any practical benefit; seems like having one of them turned off is even more sustainable.

If, however, you are someone who finds a benefit for an air purifier, this one looks like a great way to go.

@majordennisbloodnok, that's definitely one way to look at it – not buying anything is indeed the best form of sustainability, environmental and financial. 😀 

I don't really benefit from air purifiers, but I can definitely see the benefits on my wife who suffers from allergies and asthma. Since running our purifiers this year, she has hardly been affected by allergies – the real test is coming with the pollen season though.

Posted by: @editor

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I can definitely see the benefits on my wife who suffers from allergies and asthma. Since running our purifiers this year, she has hardly been affected by allergies – the real test is coming with the pollen season though.

And that, of course, is precisely the point. First and foremost, the product has to be able to justify its existence and for your wife that's what it's doing. Good to know it's doing so in an environmentally responsible way too.

After seeing Dave Gorman tot up the fees for a "Product of the Year" contest, I'm very cynical: who says it is "Most sustainable and innovative domestic product of the year" and how much did briiv pay them?