By clicking a retailer link you consent to third-party cookies that track your onward journey. This enables W? to receive an affiliate commission if you make a purchase, which supports our mission to be the UK's consumer champion.
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 qietly, 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: Dyson Hushjet HJ10
Average price in the past six months: £343
Cheapest price in the past six months: £285*
- Filters: HEPA and carbon
- 47 x 21.3 x 21.3cm (H x W x D), 3.2kg
Dyson’s Hushjet is a smaller, quieter purifier in its air treatment range, aimed at people who want effective air cleaning without a bulky machine dominating the room.
You can control it through an app, and it has 10 fan speeds, plus a sleep mode and a timer that lets you set it to run for a chosen period before switching off automatically.
Read our Dyson Hushjet HJ10 review to see if our experts rated it.
Other air purifier deals
Coway Airmega 150
Average price in the past six months: £184
Cheapest price in the past six months: £140*
- Filters: HEPA and carbon
- 46.9 x 34 x 16.5cm (H x W x D), 5.5kg
Most air purifiers are not very exciting to look at but the Coway Airmega 150 air purifier comes sage green, pink and navy blue, as well as standard white.
The manufacturer claims it works best in rooms up to 73 square metres and it will automatically detect your current indoor air quality and work accordingly, so you don't need to program it or fuss around with any smartphone apps.
Take a look at our air purifier reviews to see how it compares to more than 100 air purifiers we've tested.
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
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.
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, so you can see how much of an effect they are 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 in a sustainable way.
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.
