Bionaire BAP9240-IUK Air Purifier, Silver

Product information

This neat air purifier from Bionaire combines HEPA filtration with an inbuilt ioniser for the ultimate in compact air treatment.

Dirty, dust laden air is drawn through the front of the Bionaire BAP9240-IUK and through the multi-stage filtration system.

  • The washable foam pre-filter captures larger particles and extends the HEPA-type filter’s replacement cycle
  • The HEPA-type filter entraps 99% of all smaller visible and non-visible particles down to 2 microns in size
  • The independent ioniser naturally improves performance and helps freshen the air

The rugged motor has been designed to give many years of use and there are 3 settings, the lowest being perfect for quieter operation (such as in a bedroom). A filter service indicator eliminates guesswork by letting you know when it’s time to replace the HEPA-type filter.

The versatile Bionaire BAP9240-IUK can even be placed either upright or on its side, flush against the wall. Finally, the independent ioniser, when turned on, releases negative ions into the outgoing filtered air to help the air purification process.

H16 x W33 x D23cm
Eligible for International Delivery
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Click & collect

Free Click & collect from John Lewis or Waitrose shops for collection tomorrow from 2pm
368 participating John Lewis and Waitrose shops

Standard delivery in 5 working days (after Christmas)


Next, named or Saturday UK delivery (in time for Christmas)


Next/named day UK delivery pre-10.30am (in time for Christmas)


International delivery not available


We want you to be happy with your purchase. If you're not, depending on the type of product, you can make free returns in the UK via John Lewis shops, Royal Mail, Collect+, or MyHermes. If you need to arrange collection of large or heavy items, call us on 03456 049 049. For international returns queries, call us on +44 1698 545 454. Find out more about returns.

You'll find returns information on your delivery note. Unless faulty, we'd like you to make your return within 90 days of purchase. Exceptions apply to certain products - find out more about our refund policy.


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Q & As

Bionaire BAP9240-IUK Air Purifier, Silver 4.5 5 17 17
Great machine but too loud for the bedroom during sleep It truly does work very well and helps to clear the air making a noticeable difference and calming irritated noses. But after weeks of trying even on setting 1 of 3 we find it too noisy to sleep with it running. It needs a 0.5 setting realy. A good solution is to turn it on for the evening to clear the room before sleep. 02 December 2014
Excellent My husband suffers from various kinds of allergies (dust mites, mold etc.). This allergy triggers Allergic Rhinitis which if not sorted within day or two transforms into severe Asthma. This created quite a havoc in our lives till the day this machine arrived. Now, whenever there is a slight allergy reaction, on goes this machine and within few hours the impact is visible. We have got our lives back all thanks to this. Hence, cannot recommend this machine enough for a allergy sufferers and amazing value for money. 23 August 2014
Like a hotel room Having purchased the product yesterday and used it overnight, the air seems cleaner and cooler, similar to a hotel room. 20 April 2014
It does the job. I bought this appliance to help with my allergies. Overall I think it is a good product and definitely helps to purify the air. Two down sides are that it is not fitted with a true heap filter and it is also quite noisy on the lowest setting. Some describe it as "background noise" but it is certainly noticeable. I believe you can buy a true heap filter for it and also it might be worth buying a timer so that you can set it to come on a for a few hours before bed. 15 April 2014
Best Ever Product ! My grandson (5 yrs old)has been suffering from rhinitis (NHS diaganosed) which led to him having asthma - he tested positive (6) for dust mite /dog /cat /mould & grass inhalant allergy. Since this air purifier has been in his bedroom he no longer 'sniffs' at night and does not get his 'night time' asthma. We have left it running constantly on the number 2 setting and have used the filter supplied with the product. If we switch it off by mistake his night time allergy comes back. Fab product and great price - thanks Bionaire & John Lewis 07 September 2013
Very good product. I have used this for a few days in my bedroom, I am in my early 20's and my room does sometimes smell after being to the gym, I also suffer from hey-fever and asthma so I thought I'd chance this product. I did some research, and after seeing the Pseudoscience and unrealistic claims people say about Ionizers and air purifiers. BUT, It works for me, I feel like my room feels fresher and it is not a noisy device, I've heard worse. It does make the air fresher, and I've not had any hey-fever symptoms. The only issue I have, is that it only comes with a HEPA-type filter, which only catches particles to 2 Microns, Bionaire will sell you a true-HEPA filter that will catch particles to 0.3 Microns. 11 July 2013
Very effective to reduce odours and mould! Bought this due to having to wait 3 months to have damp proofing carried out in my new flat. Prior to buying the purifier I had problems with my sinuses/sneezing caused by mould. Once this little machine had been in action for two days in my bedroom, my sinus problems were all but gone. I was a little worried about the noise mentioned in other reviews but didn't find it a problem on the lowest setting despite being a light sleeper. It's really 'white noise' as someone else mentions. Since the damp proofing has been carried out I now use it to eradicate frying smells that seep through the floor from my upstairs neighbour. Really. happy with this - can't recommend it enough! 27 December 2012
Perfect for bedroom This product is so easy to use and looks very good. The low setting is perfect for the bedroom and produces a gentle hum which is great, and like white noise, cuts out other noises. I do not know why some people say it is too loud. It will go upright against the wall and does not take up too much room. Have only just received this but already it appears to be effective at filtering the air. I hope that means less dusting! 19 November 2012
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Additional services

  • 2 year guarantee included

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