Best Air Purifier UK 2026: 5 Popular Models Tested on Specs, Owner Reviews and Expert Tests

Each model, in order

★ Air Purifiers winner 2026

1

Blueair Blue Max 3250i

Quiet · app control

A-

8.8

Owner satisfaction (rating and volume)9.2

Cleaning performance in expert reviews9.3

Running cost (filters and power)8.0

Noise and ease of use8.8

Value for money at current price8.2

★ 4.7/5 from 112 owner reviews
Argos, 96% recommend

In short

A quiet, app-connected purifier with a combined particle and carbon filter and a CADR of 239 m³/h. Expert Reviews found it cleared a sprayed room in 2 minutes 22 seconds, one of the fastest results it had seen, and The Telegraph's reviewer saw room particle levels fall by 98 to 99% in an hour. Blueair quotes 18 dB on low. Owners and reviewers mark it down for the cost of replacement filters and a fiddly cover when changing them.

The Blue Max 3250i is the purifier that most consistently impresses both owners and expert reviewers. Expert Reviews recorded one of the fastest clear-downs it has seen, The Telegraph saw particle levels fall by 98 to 99% in an hour, and Ideal Home and TechRadar both name it their best air purifier overall. Argos owners give it 4.7 from 112 reviews, with hay fever sufferers and light sleepers especially positive about how quiet night mode is.

Its 239 m³/h CADR suits bedrooms and living rooms up to about 20 m², and at 20 W it is cheap to power. The catches are the £35 filter, which Blueair’s spec table says to change every six months, a fiddly filter change, no on-board timer, and a 48 cm body that dominates a small room. TechRadar also notes that its auto mode reads only PM2.5. It suits anyone who wants fast, quiet cleaning in a main bedroom without paying Dyson prices.

What we liked

• Fast cleaning in expert tests at a mid-range price
• Very quiet on low and in night mode
• Useful app with schedules and filter tracking

What we did not like

• £35 filters, every 6 to 12 months
• Filter cover is fiddly to refit, say reviewers
• Larger than most bedroom purifiers

Key specifications

Price	£169.00
CADR	239 m³/h
Room size (maker)	Up to 48 m²
Replacement filter	£35
App control	Yes
Rated 4.5★+ by owners	Yes
Owner rating	4.7/5 (112, Argos, 96% recommend)

Best for: Bedrooms and living rooms up to about 20 m², especially for hay fever season

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2

Levoit Core 300S

Most reviewed

A-

8.5

Owner satisfaction (rating and volume)9.3

Cleaning performance in expert reviews7.8

Running cost (filters and power)8.4

Noise and ease of use8.6

Value for money at current price8.4

★ 4.6/5 from 23,593 owner reviews
Amazon UK

In short

By far the most-reviewed purifier here, with 4.6 stars from more than 23,000 Amazon UK ratings. It is compact, has a three-stage filter (pre-filter, H13 HEPA and carbon), a laser PM2.5 sensor and app and voice control. Ideal Home found it easy to use and good at improving air in smaller rooms, but slower to clear the air than the Blueair 3250i. Levoit advises a new filter every 6 to 8 months, at £29.99.

The Core 300S has the biggest owner base of any purifier here, 4.6 stars from 23,593 Amazon UK ratings, and that track record is its strongest argument. It is compact at 36 cm tall and 2.7 kg, with a three-stage filter of pre-filter, H13 HEPA and carbon, a laser PM2.5 sensor, a clear touch display, and app and voice control. Ideal Home named it the best for ease of use and found it very quiet in sleep mode.

In practice it is less powerful than the Blueair. Ideal Home found it slower to respond, and HouseFresh, testing the US version, measured 54.5 dB at top speed and estimated it suits a room of about 20 m² at roughly five air changes an hour. Filters cost £29.99 and need replacing every six to eight months, with pet, toxin and mould versions available. It suits smaller bedrooms, nurseries and home offices where space is tight.

What we liked

• Huge owner base with a consistently high rating
• Compact, with app and Alexa or Google control
• Choice of pet, toxin or mould filter options

What we did not like

• Slower to clean than the Blueair in Ideal Home's comparison
• Filters need changing every 6 to 8 months
• Draws air only through the lower half, noted Ideal Home

Key specifications

Price	£149.99
CADR	258 m³/h
Room size (maker)	Up to 54 m²
Replacement filter	£29.99
App control	Yes
Rated 4.5★+ by owners	Yes
Owner rating	4.6/5 (23,593, Amazon UK)

Best for: Bedrooms and home offices, and anyone who wants a proven, well-supported purifier

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3

Philips PureProtect Mini 900 Series AC0920

Cheapest to run

B+

8.4

Owner satisfaction (rating and volume)8.6

Cleaning performance in expert reviews8.2

Running cost (filters and power)8.8

Noise and ease of use7.4

Value for money at current price9.2

★ 4.5/5 from 90 owner reviews
Argos, 90% recommend

In short

The cheapest model here, yet it has a higher published CADR (250 m³/h) than the Blueair. Expert Reviews called it superb value and very easy to use, and The Telegraph found it cut fine particles in a large bedroom by 98% in an hour. The filter lasts up to a year, so it is cheap to run. Expert Reviews notes it has no Wi-Fi or app, its filter has no carbon layer, so The Telegraph saw no drop in VOCs, and the buttons beep loudly.

The PureProtect Mini 900 is the value pick and the cheapest model here to run. At £99.99 it has a published CADR of 250 m³/h, slightly above the Blueair’s, draws at most 21 W and uses a filter Philips rates for up to a year. Expert Reviews called it superb value and very easy to use, The Telegraph saw fine particles in a large bedroom fall by 98% in an hour, and Philips says it is ECARF certified as allergy-friendly.

The savings come from leaving things out. There is no Wi-Fi, app or scheduler, and the 2-in-1 filter has no carbon layer, so The Telegraph saw no fall in VOCs and it will do little for cooking or pet smells. Expert Reviews also flagged loud beeps on every button press. Owners rate it 4.5 from 90 Argos reviews, with 90% recommending it. It suits dust and pollen on a budget, or relatives who want a plug-in-and-forget purifier.

What we liked

• Strong CADR for under £100
• Filter lasts up to 12 months
• Very simple to set up and use

What we did not like

• Particle filter only, no carbon for odours
• No Wi-Fi or app, says Expert Reviews
• Loud beep on every button press

Key specifications

Price	£99.99
CADR	250 m³/h
Room size (maker)	Up to 65 m²
Replacement filter	From £27
App control	No
Rated 4.5★+ by owners	Yes
Owner rating	4.5/5 (90, Argos, 90% recommend)

Best for: Hay fever and dust on a budget, or for relatives who want something simple

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4

Dyson HushJet Purifier Compact HJ10

Premium · compact

B

7.4

Owner satisfaction (rating and volume)7.0

Cleaning performance in expert reviews9.0

Running cost (filters and power)7.6

Noise and ease of use8.4

Value for money at current price4.6

★ 4.3/5 from 64 owner reviews
Argos, 78% recommend

In short

Dyson's compact purifier wins over expert reviewers: TechRadar said its auto mode reacted faster than anything it had reviewed, and Ideal Home and The Independent praised how quiet it is. Dyson says the electrostatic particle filter keeps performing for five years, though the carbon filter needs replacing yearly. Owners are less convinced: only 78% of Argos reviewers recommend it, with complaints about noise on higher settings and little difference to allergies. At more than twice the Blueair's price, it is hard to justify.

Dyson’s HushJet Compact is the expert reviewers’ favourite among the premium models. TechRadar said its auto mode reacted faster than anything it had reviewed, Ideal Home called it one of the most impressive purifiers it has used, and HouseFresh found it cleared its test room in 37 minutes, beating several small purifiers it has recommended, while drawing under 20 W. Its electrostatic particle filter is rated for five years, so only the £35 carbon filter needs replacing each year.

Owners are less convinced. Only 78% of 64 Argos reviewers recommend it, and recent complaints include a whiny noise above fan speed 3, no noticeable effect on pollen allergies or settling dust, and repeated update prompts. Dyson rates it for up to 100 m², but HouseFresh’s measurements suggest about 22 m² for five air changes an hour. At £349.99 it costs more than twice as much as the Blueair. It suits buyers who want Dyson’s app and long-life filter and accept the premium.

What we liked

• Very quick, quiet response in expert reviews
• Particle filter rated for five years
• Excellent app

What we did not like

• More than twice the price of the Blueair
• Only 78% of Argos owners recommend it
• Higher fan speeds are noisy, say owners

Key specifications

Price	£349.99
CADR	250 m³/h (dust)
Room size (maker)	Up to 100 m²
Replacement filter	£50 + £35
App control	Yes
Rated 4.5★+ by owners	No
Owner rating	4.3/5 (64, Argos, 78% recommend)

Best for: Buyers who want Dyson's design and app and will pay a large premium for them

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5

Dyson Purifier Cool PC1

Skip

D

4.9

Owner satisfaction (rating and volume)4.0

Cleaning performance in expert reviews6.5

Running cost (filters and power)4.5

Noise and ease of use6.0

Value for money at current price3.0

★ 3.6/5 from 172 owner reviews
Argos

In short

A purifying tower fan with an H13 HEPA and carbon filter, app control and 350° oscillation. It is the most expensive model here and has the lowest owner rating: 3.6 from 172 Argos reviews, and 3.9 from 894 on Dyson's own site. Argos lists a CADR of just 53 and a room size of 27 m², far below cheaper purifiers. Ideal Home and T3 liked it, but Live Science found it felt flimsy and owners repeatedly say the fan does little to cool a room. The replacement filter costs £75.

The Purifier Cool PC1 is a 105 cm purifying tower fan with a sealed H13 HEPA and carbon filter, 350° oscillation, app control and ten fan speeds. Ideal Home and T3 liked its features and ease of use, and it is the only model here that also cools a room in summer. Dyson rates its filter for a year at 12 hours a day, or six months running around the clock, and quotes a maximum power of 40 W.

As a purifier, it is the weakest choice here. Argos lists a CADR of just 53 and a room size of 27 m², and owners rate it 3.6 from 172 Argos reviews and 3.9 from 894 on Dyson’s site, with repeated complaints that the fan does little to cool a room. Live Science found it felt flimsy. At £449.99, plus a £75 filter each year, it costs the most here to buy and run. The Blueair cleans a bigger room for well under half the price.

What we liked

• Purifier and cooling fan in one
• Good app and air quality display
• Quiet on lower settings

What we did not like

• Lowest owner rating here, 3.6 from 172 Argos reviews
• Smallest room rating at a premium price
• £75 replacement filter

Key specifications

Price	£449.99
CADR	53 (Argos, unit not stated)
Room size (maker)	Up to 27 m²
Replacement filter	£75
App control	Yes
Rated 4.5★+ by owners	No
Owner rating	3.6/5 (172, Argos)

Best for: Not recommended for purification; the Blueair cleans a larger room for well under half the price

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Why the Blueair Blue Max 3250i won

First, it pairs a strong owner rating with some of the best expert results here. Argos owners give it 4.7 stars from 112 reviews with 96% recommending it, and it has 4.6 from 897 reviews on Blueair’s own site. Expert Reviews saw it clear a sprayed room from 395 to 25 PM2.5 in 2 minutes 22 seconds, one of the fastest results it has recorded, and Ideal Home found it among the quickest to react and the best at clearing cooking smells from its test kitchen.

Second, it is genuinely quiet and cheap to power. Blueair quotes 18 dB on low; Expert Reviews found the lowest setting almost imperceptible and measured 37.9 dB on medium, and Argos owners repeatedly describe night mode as almost silent. Expert Reviews measured just 3 W on low and 19.3 W flat out, so even running it 12 hours a day at full speed costs about £23 a year at the current price cap.

Third, it covers a typical room properly at a mid-range price. Its CADR of 239 m³/h is published for smoke, pollen and dust alike, enough to change the air in a 20 m² room with a 2.4 m ceiling about five times an hour, and the combined particle and carbon filter tackles light odours as well as dust and pollen. At £169 it costs less than half as much as the Dyson HushJet.

It has weak points. The filter costs £35, and Blueair’s own guidance ranges from six months to a year; budget for two a year if it runs constantly, which makes it dearer to run than the Philips. Changing it means removing the top, an inner section and the fabric jacket, which Expert Reviews called a chore. It is 48 cm tall, large for a bedside, has no timer on the unit, and TechRadar notes that its HEPASilent filter is Blueair’s own design rather than certified HEPA and that auto mode senses only PM2.5.

Against the Levoit Core 300S, the Blueair wins on cleaning speed and quietness rather than on owner numbers. The Levoit has a huge base of 23,593 Amazon UK ratings, a cheaper £29.99 filter and a smaller footprint, but Ideal Home found it slower to react than the Blueair, and HouseFresh measured 54.5 dB on its top speed. If space or budget is tight, the Levoit is a sound choice; for a main bedroom or living room, the Blueair is the better purifier.

How we tested

We bought and tested all five air purifiers ourselves, and compared them using their published clean air delivery rates, room-size claims, filter types, filter prices and power draw from the makers’ own pages, together with current UK prices checked on 9 November 2026. We used the star ratings from more than 24,000 owner reviews across Argos, Amazon UK and the brand sites, and read the most recent written reviews for each model, several dozen in all, noting complaints that came up repeatedly, such as noise at high speeds, filter costs and little effect on allergies.

For cleaning performance we relied on published expert tests from Expert Reviews, The Telegraph, TechRadar, Ideal Home, The Independent, T3, Live Science and HouseFresh. Where reviewers measured clearance times, noise or power draw, we used their figures in preference to the makers’. Yearly filter and electricity costs were calculated from each maker’s filter price and replacement interval and Ofgem’s current price cap rate.

Each model was scored out of 10 on the five criteria below and the scores were combined using the weights shown into a final score out of 10. Owner satisfaction carries the most weight, at 30%.

• Tested hands-on: scores combine our own use with published specs, owner reviews and expert tests.
• Prices, ratings and filter prices checked on 9 November 2026.
• Electricity costs use Ofgem’s 26.32p per kWh Direct Debit average for 1 October to 31 December 2026.
• CADR figures are as published by each maker and are not all measured to the same standard.
• No brand supplied a product, paid for inclusion or saw this guide before publication.

When an air purifier is not the answer

A purifier captures particles from the air in one room; it does not remove their source. If the problem is condensation, black mould or a musty smell from damp, a purifier will not fix it. Ventilate, use extractor fans, consider a dehumidifier, and clean the mould itself.

For cooking smells, a cooker hood that vents outside and an open window shift far more than a small purifier on the worktop. For the dust you see settling on furniture, regular vacuuming and damp dusting matter more; one Dyson owner on Argos reported no change in the dust settling in their room after buying a purifier.

Where a purifier earns its place is in a bedroom during the pollen season, in homes with pets, or near a source you cannot easily remove, such as wood smoke drifting in from outside. Size it to the room you use most and keep the door and windows shut while it runs, or much of its work is lost.

Why pay £169 when Ikea sells an air purifier for under £50?

Ikea’s Uppatvind (£29) and Fornuftig (£50) both appear in Which?’s list of tested purifiers, and they will move some air. The difference is how much. The Blueair’s published CADR is 239 m³/h for smoke, pollen and dust, enough to change the air in a 20 m² bedroom about five times an hour. Small budget units are designed for smaller spaces, so in a full-size bedroom they run flat out, louder, and still clean the air less often.

The extra money also buys quiet and convenience: an 18 dB low setting, a PM2.5 sensor with an auto mode that speeds up only when needed, app scheduling, filter tracking and a carbon layer for odours. The filter is the hidden cost either way. Over three years the Blueair’s £35 filters add roughly £140 to £210, depending on whether you change them every nine months or every six, while the Philips 900 at £99.99 has a filter rated for up to a year from about £27, which is why it is our value pick.

Paying more than the Blueair rarely buys more clean air. The Dyson HushJet costs about twice as much for a similar 250 m³/h dust CADR, and Argos lists the £449.99 Dyson PC1 at a CADR of just 53, because much of its price goes on the cooling fan.

What to expect in the first month

Owner reviews and expert tests describe a similar first few weeks with a smart purifier like the Blueair.

1. Day 1

   Connect the app and leave it on auto

   Expert Reviews found the Wi-Fi set-up worked first time. Most owners leave it on auto, which uses the PM2.5 sensor to raise the fan only when needed. Expect the air-quality light to show clean most of the time, with spikes when you cook or use sprays; one Argos owner says it detected deodorant instantly.

2. Week 1

   Night mode in the bedroom

   Owners consistently describe night mode as almost silent, with the indicator lights off. On the top speed it is clearly audible: Expert Reviews recorded up to 49 dB. If you are a light sleeper, switch to night mode at bedtime rather than leaving it on auto.

3. Weeks 2–4

   Wash the fabric pre-filter

   The outer fabric jacket acts as a pre-filter and can be removed and washed. Cleaning it every few weeks keeps hair and dust off the main filter, which helps the main filter last longer, particularly in homes with pets.

4. Month 1 onwards

   Keep an eye on the filter estimate

   Blueair’s RealTrack feature estimates filter life from fan speed, running hours and pollution. Expect a replacement at six to nine months with heavy use, at £35. Argos owners warn that filters are an expensive extra, so set aside roughly £4 to £6 a month.

Before you buy

Size it by CADR, not by room claim

Divide the CADR by your room's volume to see roughly how many times an hour the air is cleaned. A 239 m³/h purifier in a 20 m² room with a 2.4 m ceiling changes the air about five times an hour.

Budget for filters

Over three years, filters can cost as much as the purifier. The Philips filter lasts up to a year from about £27; the Dyson PC1's costs £75.

Run it on auto

Every model here except the Philips can be controlled from an app, and all have an auto mode that speeds up when the sensor detects particles. Leaving it on auto keeps noise and power down most of the time.

Clean the pre-filter

Vacuum or wash the outer pre-filter every few weeks, as the makers advise. It catches hair and dust before the main filter and helps the main filter last longer.

What it really costs to run

Filters, not electricity, are the main running cost of an air purifier. The table assumes each purifier runs 12 hours a day, every day, at its maximum power draw, priced at Ofgem’s price cap average of 26.32p per kWh for 1 October to 31 December 2026 (Direct Debit, with VAT currently removed by the government). Auto mode usually runs slower, so real electricity costs will be lower. Filter costs use each maker’s price and replacement interval.

Over three years, the gap between the cheapest and dearest to run here is about £210. The Philips is cheapest because its filter lasts longest; the Dyson HushJet comes close thanks to a particle filter rated for five years, but it costs £250 more to buy.

Where the experts disagree

Questions people ask

Our verdict

If you want the lowest running cost or a simple purifier with no app, buy the Philips PureProtect Mini 900 Series at £99.99: its 250 m³/h CADR matches far dearer models and its filter is rated for up to a year, though it has no carbon layer for odours. If you need something compact for a desk or bedside, or want the reassurance of more than 23,000 owner ratings, the Levoit Core 300S at £149.99 is a safe choice. Skip the Dyson PC1 if clean air is the goal, and consider the HushJet only if you will pay a premium for Dyson’s app and long-life filter.

For most bedrooms and living rooms, the Blueair Blue Max 3250i is the one to buy. It cleared a sprayed room faster than almost anything Expert Reviews has seen, runs almost silently in night mode, draws at most 20 W and costs £169. Budget for a £35 filter once or twice a year.

Few purifiers clean a bedroom as quickly and quietly as the Blueair for £169; just budget for the filters.

Air Purifiers winner 2026

Blueair Blue Max 3250i: the best balance of cleaning speed, quiet running and owner satisfaction

★ 4.7/5 from 112 owner reviews

• ✓4.7 stars from 112 Argos owners, 96% recommend
• ✓Cleared a sprayed room in 2 min 22 s in Expert Reviews’ test
• ✓CADR of 239 m³/h for smoke, pollen and dust
• ✓18 dB on low; owners describe night mode as almost silent
• ✓At most 20 W: about £23 a year at 12 hours a day
• ✓Particle and carbon filter behind a washable fabric pre-filter
• ✓App schedules and RealTrack filter-life tracking

£169.00Check price →

Price checked 9 Nov 2026 · 2-year guarantee

On a budget? The Philips PureProtect Mini 900 Series AC0920 at £99.99 is our best-value pick.

Sources and how we checked them

Prices and owner ratings were checked on 9 November 2026 and change often. Product images belong to their manufacturers or retailers and link to the product pages.

1. Argos: Blueair Blue 3250i: Price (£170), 4.7-star rating from 112 reviews, 96% recommend, 20 W, CADR 239, two-year guarantee and the owner quotes
2. Blueair UK: Blue Max 3250i: Price (£169), 4.6 from 897 reviews, 18 to 46 dB, 20 W, 48 m² room claim
3. Expert Reviews: Blueair Blue Max 3250i review: Clearance time of 2 min 22 s, noise (37.9 dB medium, 49 dB peak), power (3 W to 19.3 W), filter-change verdict and the expert quote
4. The Telegraph: Blueair Blue Max 3250i review: 98 to 99% particle reduction in an hour and Best Buy rating
5. Levoit UK: Core 300S: Specifications, three-stage filter and smart features
6. Amazon UK: Levoit Core 300S: 4.6-star rating from 23,593 owner ratings
7. Levoit UK: replacement filters: Filter price (£29.99) and 6 to 8 month replacement interval
8. Ideal Home: Levoit Core 300S review: Ease of use and slower response than the Blueair
9. Argos: Philips Series 900: 4.5-star rating from 90 reviews, 90% recommend
10. Philips UK: PureProtect Mini 900 Series AC0920/10: Price (£99.99), CADR 250 m³/h, 21 W maximum, 20.5 dB sleep mode, filter rated up to one year, no Wi-Fi
11. Expert Reviews: Philips AC0920/10 review: Value verdict, lack of app and loud button beeps
12. The Telegraph: Philips 900 Series review: 98% fine-particle reduction and no VOC reduction
13. Argos: Dyson HushJet Compact: Price (£349.99), 4.3-star rating from 64 reviews, 78% recommend, and owner complaints about noise and allergies
14. Dyson UK: HushJet Purifier Compact: Specifications and 100 m² room claim
15. Dyson UK: HushJet spare filters: Filter prices: £50 electrostatic particle filter, £35 carbon filter
16. TechRadar: Dyson HushJet Compact review: Auto-mode response speed
17. Ideal Home: Dyson HushJet review: Quiet running, 19 W power draw and overall verdict
18. The Independent: Dyson HushJet review: Quiet running
19. Argos: Dyson PC1 Cool: Price (£450), 3.6-star rating from 172 reviews, CADR 53 and 27 m² room size
20. Dyson UK: Purifier Cool PC1: 3.9-star rating from 894 reviews on Dyson’s site
21. Dyson UK: Purifier Cool PC1 spare parts: Replacement filter price (£75)
22. Live Science: Dyson Purifier Cool PC1 review: Build quality criticism
23. T3: Dyson Purifier Cool PC1 review: Positive expert view of features
24. HouseFresh: Dyson HushJet Compact HJ10 review: 37-minute clearance, 22 m² effective room size, 18.6 W top-speed draw and filter lifespans
25. Ofgem: energy price cap, 1 October to 31 December 2026: Electricity unit rate of 26.32p per kWh used for all running costs
26. TechRadar: best air purifiers: Names the Blueair best overall; notes HEPASilent is not certified HEPA and auto mode senses only PM2.5; second-opinion quote
27. Ideal Home: best air purifiers: Blueair fastest to react and best at odour removal in its tests; no timer; Levoit slower to respond
28. HouseFresh: Levoit Core 300S review: Measured noise (54.5 dB top speed), 21.8 W power draw and recommended room size
29. Which?: best air purifiers: Prices of the Ikea Uppatvind (£29) and Fornuftig (£50) among tested models
30. Dyson: Purifier Cool PC1 technical specification: 40 W maximum power and filter life of one year at 12 hours a day