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Best air purifier deals 2026
If you suffer from allergies or live beside a busy and congested road, you might want to consider an purifier to clean the air you’re breathing in your home.
Air purifiers are useful for improving air quality by removing dust mites, pollen, pet dander and other airborne allergens, which can be more common in the warmer spring and summer months.
We test and review them throughout the year, and our intensive research helps us uncover the best air purifiers that work effectively and quietly and are efficient to run, from popular brands including Dyson, Levoit and Philips.
Read on for our picks of the latest air purifier deals.
What makes Which? deals different?
Retailers sometimes use misleading ‘was’ and ‘before’ prices to claim their deals are good. Media sites and artificial intelligence (AI) promote deals from retailers – but do they always check/verify them first? We don’t just take a retailer's word for it; we track actual market prices over six months. We share cheapest and average calculations, and evaluate products against strict performance benchmarks – so you get good quality at honest prices.
*References to ‘average price' and 'cheapest price' are based on Which? market knowledge and information supplied by our partners. Prices are checked for the six calendar months prior to publication. Not all retailers are included in our checks.
Best air purifier deals
We check top retailers to find the best deals on air purifiers.
We only include offers on air purifiers that do well in our lab tests. If an air purifier doesn't make the grade, you won't find it on this list – even if it's been heavily reduced.
Our pick: Winix Zero-S
Average price in the past six months: £201
Cheapest price in the past six months: £130*
- Filters: HEPA and carbon
- 59.6 x 38.2 x 22.3cm (H x W x D), 7.7kg
Winix claims that this air purifier has a large coverage area of up to 100 square metres and it can purify a room a fifth of that size in under 5 minutes.
With four fan speeds and night and auto modes, as well as HEPA and carbon filters, it could be just what you need to keep your bedroom a low-allergen zone, as it's claimed to remove pollen, dust, pet hair, mould spores and volatile organic compounds.
Find out how effectively it works compared to other models in our Winix Zero-S Air Purifier review.
Other air purifier deals
AEG Pure 5000 APO50371DG
Average price in the past six months: £166
Cheapest price in the past six months: £130*
- Filters: HEPA and carbon
- 41 x 23 x 23cm (H x W x D), 3.36kg
If you want to freshen up a small space, this AEG air purifier is a decent option. AEG claims it can rid a 10-square-metre room of house dust, pollen or pet dander in only 11 minutes.
It's smart compatible, so you can control it remotely using an app on your phone or tablet. Its features include night mode with a claimed minimum noise level of 20dB – equivalent to a soft whisper from a few feet away.
Grab this while you can, as it's only on special offer at Amazon for a limited period (while stocks last).
Read our AEG Pure 5000 APO50371DG review to find out if it's as quiet as claimed.
Philips 1000i Series AC1715/30
Average price in the past six months: £188
Cheapest price in the past six months: £130*
- Filters: Dust, HEPA and carbon
- 48.5 x 25.3 x 25.3cm (H x W x D), 3.87kg
Grab this while you can as it's only on special offer at Amazon for a limited period (while stocks last).
This air purifier from Philips is designed to work in medium rooms of up to 78 square metres. It comes with a 1.8-metre power cord.
It's smart compatible, meaning that you can control it remotely using the Air+ app for your phone or tablet. Its features include night and auto modes, a timer via the app and four fan speeds.
Read our Philips 1000i Series AC1715/30 review to see what our tests uncovered.
Blueair Blue Signature
Average price in the past six months: £360
Cheapest price in the past six months: £259*
- Filters: HEPA and carbon
- 43.5 x 36 x 36cm (HxWxD), 6kg
If you want a purifier with a bit of heft to cleanse a bigger space, Blueair claims that this purifier will take just 30 minutes to clean a 154-square-metre room.
App control and a voice assistant allow you to customise settings, schedule cleanings, track air quality over time and will even tell you when the filters need replacing.
This air purifier is another limited term deal from Amazon that will end when promotional stocks run out.
Read our Blueair Blue Signature review to see if it's simple and intuitive to use and excellent at air purifying.
What type of air purifier should I buy?
Patrick Gallagher, Which? researcher, says:
Choosing a filter type
'Not all air purifiers are equal when it comes to air purification, and their ability to quickly and effectively extract pollutants varies. Some fail to remove many particles at all, can be noisy when put on the highest settings and the filters can be fiddly to remove or fit.
'Look for an air purifier with a HEPA (High Efficiency Particulate Air) filter. It's designed to capture 99.95% of ultrafine particles, and a filter must meet certain standards of filtration efficiency to call itself HEPA.
'Be wary of air purifiers that describe the filter as HEPA-type or HEPA-style, as they might not conform to the exact criteria or work as well. The same goes for EPA (efficiency particulate air) filters, which may not meet the same high standards as HEPA filters.
'For unpleasant smells and gases, including VOCs (Volatile Organic Compounds) from common household chemicals such as cleaning products, you'll need an air purifier that also has an activated carbon filter or a charcoal filter.'
Running costs, automatic modes and air-quality sensors
'As well as the initial purchase price, it's important to consider how much an air purifier will cost to run. Our tests have found this can be as little as £6 a year (which is the annual running cost of our Great Value recommendation), and as much as £64 per year.
'Many air purifiers have an auto mode, meaning they'll detect the level of pollution in the air and spring into action when they need to, without you having to manually adjust the settings. That's a useful feature to have, as it saves you time and effort. But you won't want it on auto mode if it has high running costs.
'Some air purifiers have air-quality sensors that also report on the pollution they've detected, either sending the information to an app on your smartphone or displaying it on a screen on the machine itself. That way you can see how much of an effect they're having on your home's air quality.'
Get more tips on how to buy the best air purifier.
How to recycle old appliances
If you're looking to replace an ageing air purifier by shopping in the sales, make sure you dispose of your old one sustainably.
One option is kerbside collection for small electrical items. In many cases, your local council will collect smaller items such as toasters and kettles. Alternatively, you can drop items at a local recycling centre or hand them over to retailers that have their own recycling schemes.
For more details on how to get rid of your unused gadgets, read our guide on how to recycle electrical items.
Looking for more offers on home products? See our pick of the best washing machine deals and best mattress deals.
