Bionaire BAP9424-IUK Air Purifier, White

Product information

The space saving BAP9424-IUK tower 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 rear of the Bionaire BAP9424-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 Bionaire BAP9424-IUK also boasts an 8 hour countdown timer and finally, the independent ioniser, when turned on, releases negative ions into the outgoing filtered air to help the air purification process.

This product has received the British Allergy Foundation’s seal of approval. They scientifically test and measure products and endorse those that specifically restrict or remove high levels of named allergens from the environment.

H68 x W22 x D18cm
Eligible for International Delivery
1x washable pre filter, 2x replacable HEPA-type filters
Maximum room size
Model name / number


Click & collect

FREE on orders over £30, £2 if you spend less. Collect from John Lewis or Waitrose tomorrow from 2pm
369 participating John Lewis and Waitrose shops

Standard delivery in 5 working days


Named or Saturday UK delivery


Named day UK delivery pre-10.30am


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.


Find out more about returning products

Q & As

Rated 4.1 out of 5 by 8 reviewers.
Rated 5 out of 5 by Air purifier great for son's hayfever This is a larger model than some - but means it sits on the floor rather than a surface, so actually better. It can deal with more than one room, which can be useful. We use it in my sons bedroom for his hayfever and it has helped. The great feature is the timer so you can set it for 2, 4 or 8 hours. We liked it so much we got one for our room too! 14 July 2015
Rated 3 out of 5 by Excellent JL service - but product only average I bought this purifier in the summer as I was suffering from hay fever. You can definitely tell the difference in the air, however it's noisy even on its lowest setting, so you cannot leave it on through the night. Good build quality, but expensive for what it is. To be honest, I have only used it a handful of times due to the noise it makes. 28 December 2014
Rated 5 out of 5 by Excellent for asthma suffers Found this excellent for my asthma , used every day during this summers heat wave. Others noticed the Air was clearer in my room. Loved the timer & different speeds. Only downside was the noise but did test it in the shop with excellent sales assistant against similar products, will recommend. 19 August 2014
Rated 5 out of 5 by Helped my wife My wife suffers from hay fever and finds sleeping difficult during periods of high pollen, using the Bionaire for a few hours before sleep to filter the room has really helped. 22 July 2014
Rated 5 out of 5 by Excellent value for money We have had a damp problem in a flat we rented. I am now allergic to mould so when this problem started and the landlord couldn't fix it (and we had the rest of our tenancy), I found I wasn't sleeping properly or had to take anti-histamines all the time. As soon as I bought this and put it in the bedroom, I had a brilliant nights sleep and woke in the morning being able to breath. The time settings available are good, it is stylish looking so can be hidden in the bedroom and works brilliantly - the air seemed so much fresher. Would definitely recommend. 22 October 2012
Rated 2 out of 5 by too noisy On the highest setting it was very noisy and even on the lowest speed it was too loud for a bedroom and I returned the item as it wasnt any use to me. 27 July 2012
Rated 4 out of 5 by Effective, Quiet, but annoying blue light We are very happy with this air purifier and find it removes dust and makes the air feel fresher in our bedroom. Quiet enough to run during the night without being disturbing, and a handy timer function to turn off automatically. Good quality and effective, the only annoying feature is the 'power' button, which glows a very bright light blue - to the point that it illuminates half our bedroom at night and we no longer have any need for a nightlight or bedside lamps. We have found a simple solution, a facecloth over said button blocks the light :) 29 June 2012
Rated 4 out of 5 by Really works efficiently I bought this filter to remove cat hair particle's from my lounge area. My Son's girlfriend is allergic to cats. Even though the cat was around she didn't suffer with her allergy. I was really impressed. 07 July 2011
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Additional services

  • 2 year guarantee included

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