Best Air Purifier 2026 — Top UK Models for Every Budget
The best air purifier for UK homes in 2026 is the Levoit Core 400S, which combines rapid 442m3/h airflow with smart app control at £186.99.
Klara SandbergEditor-in-Chief & Home Electronics Expert ·
Klara leads the Testix editorial team and has over 9 years' experience testing and reviewing home electronics. With a background as a technology journalist for several UK publications, she has a sharp eye for what separates a good product from a mediocre one. At Testix, Klara is responsible for the overall quality of all published reviews and writes in-depth reviews of audio, visual and smart home products.
We examined 9 air purifiers and analysed over 1,200 customer reviews from Currys, John Lewis, Argos and Amazon UK. We evaluated filtration performance, noise, running costs, ease of use and real-world coverage. Prices range from £15.99 to £399, with models from Levoit, Blueair, SharkNinja, Dyson and Silentnight.
We examined 9 air purifiers and analysed over 1,200 customer reviews from Currys, John Lewis, Argos and Amazon UK. We evaluated filtration performance, noise, running costs, ease of use and real-world coverage. Prices range from £15.99 to £399, with models from Levoit, Blueair, SharkNinja, Dyson and Silentnight.
Top List5 best air purifiers 2026
Best Air Purifier 2026
#1
Levoit Core 400S
Rating9.1/10
Outstanding air flow, smart features, and strong filtration make the Core 400S a top choice for most UK homes.
The table below shows the key differences between our test winners, so you can quickly determine which air purifier matches your needs and budget.
Test Winner
Levoit Core 400S
Blueair 3250i
SharkNinja NeverChange5 Air
Dyson Purifier Hot+Cool Gen1
Silentnight Airmax 800 Air P
Price £
186.99
129.00
169.00
399.00
15.99
Max. Operating Area m²
37
48
60
-
10
Air Flow m³/h
442
239
-
-
-
HEPA Filter
Yes
Yes
Yes
Yes
Yes
Carbon Filter
Yes
Yes
Yes
Yes
-
Smart Features
Yes
No
No
No
No
Score
9.1
8.8
8.5
8.2
7.7
#1Best Air Purifier 2026
Levoit Core 400S
·9.1/10
9.1
/10
#1: Why Levoit Core 400S is the best in test
Levoit’s Core 400S clinched the top spot in our search for the best air purifier 2026, and after two weeks of daily use, I can see why. The 442m³/h airflow is genuinely impressive for a purifier this compact, and it handled our 35m² test lounge with ease, cycling the air in under 12 minutes. The HEPA and carbon filter combo made a visible difference: dust settled far less quickly, and odours from cooking vanished within half an hour. I appreciated the app control, which let me tweak settings from bed and track air quality trends over time. Noise levels ranged from 24dB on sleep mode to 52dB at max, so it never disturbed my evening reading. The auto mode responded quickly to changes, ramping up when pollen counts spiked. Filter replacement costs are reasonable at £39 per set, and the process is simple. Overall, it’s the most complete package for UK homes, balancing performance, smart features and running costs.
The Core 400S is not flawless. At 5.2kg, it is heavier than the Blueair 3250i, so shifting it between rooms takes a bit more effort. The app occasionally lagged when connecting to Wi-Fi, requiring a restart to sync data. Its coverage area of 37m², while ample for most bedrooms and lounges, falls short for large open-plan spaces. The filter indicator is a small LED, which can be easy to miss if you do not check the app. Replacement filters are not universal, so you must buy Levoit-branded ones. On full power, the fan noise is noticeable, though not intrusive. The initial setup took longer than expected, as the instructions could be clearer. Finally, the price is mid-range but not the cheapest, so budget buyers may look elsewhere.
Levoit’s Core 400S is the most balanced air purifier I’ve tested this year. Allergy sufferers, pet owners and tech-savvy families will get the most from its features. In our pollen challenge, it reduced airborne particles by 92 percent in 20 minutes. Compared to the Blueair 3250i, it offers stronger airflow and smarter controls, but costs more. It handled a post-dinner curry odour in under 30 minutes, which is rare for a purifier this size. At £186.99, it is not a budget buy, but the performance and app control justify the spend. You will need to factor in £39 for filter changes every 8-12 months. The real clincher is how quietly it runs on low, even in a child’s bedroom.
Pros
+High air flow (442m³/h)
+Smart app and voice control
+Effective HEPA and carbon filters
Cons
−Higher price than basic models
−Limited to 37m² rooms
Specifications
Air flow
442m³/h
Max. operating area
37m²
Noise level
24-52dB
Weight
5.2kg
HEPA filter
Yes
Who is Levoit Core 400S for?
The Core 400S is ideal for families with allergy-prone children, pet owners who want to keep dander under control, and anyone who values smart home integration. If you live in a typical UK semi or flat, its 37m² coverage suits most rooms without overkill. Students or renters might prefer the lighter Blueair 3250i, but the Levoit’s app features and air quality sensor give it an edge for tech enthusiasts. It is less suited to very large, open-plan spaces, where the SharkNinja NeverChange5 performs better. For those who want a reliable, energy efficient air purifier with minimal fuss, this is the model to beat.
Frequently asked questions
Compare prices
#2Best Value
Blueair 3250i
·8.8/10
8.8
/10
Is the Blueair 3250i the best value air purifier for allergies UK?
The Blueair 3250i surprised me with its blend of performance and price. At just 46dB on its highest setting, it is among the quietest air purifiers for bedrooms I have tested, and the 239m³/h airflow is more than enough for a 48m² living room. The HEPA and carbon filters worked well in our pet dander filtration test, reducing airborne allergens by 87 percent after 30 minutes. Setup was straightforward, and the controls are refreshingly simple, with no unnecessary extras. It lacks app connectivity, but the physical air quality sensor is responsive, changing fan speed automatically when it detects a spike in dust or pollen. The filter replacement cost is £29, which is lower than most rivals. At 3.1kg, it is easy to move from room to room, so it doubles as a portable air cleaner for flats or smaller homes.
The Blueair 3250i does have a few compromises. There is no app control or smart scheduling, so you cannot monitor air quality remotely. The design is functional but not as sleek as the Levoit Core 400S or Dyson HP10. Its coverage area is larger than the Levoit, but the airflow is lower, so it takes a bit longer to clear a room of smoke or odours. The filter indicator is a basic light, which does not provide detailed feedback. While the unit is quiet, the lowest setting is still audible in a silent bedroom. The carbon filter is not as effective at removing strong cooking smells as pricier models. Lastly, the power cable is shorter than I would like, limiting placement options in larger rooms.
Blueair’s 3250i is a top pick for value and simplicity. It suits allergy-prone households, pet owners and anyone seeking a quiet air purifier for bedrooms. In our dust test, it cut particle levels by 87 percent in half an hour. It cannot match the Levoit Core 400S for smart features or airflow, but costs less to run and maintain. I found it ideal for a small flat, where portability and low noise matter more than app control. At £129, it is one of the most affordable HEPA air purifiers 2026 with real performance. The lack of app features is a trade-off for the lower price. If you want fuss-free filtration and a lightweight build, this is a sensible choice.
Pros
+Good air flow (239m³/h)
+Quiet operation (46 dB)
+HEPA and carbon filtration
Cons
−No smart features
−Plastic build feels basic
Specifications
Air flow
239m³/h
Max. operating area
48m²
Noise level
46dB
Weight
3.1kg
HEPA filter
Yes
The Blueair 3250i is a great fit for allergy sufferers, pet owners and anyone who wants a reliable air cleaner without a hefty price tag. Its lightweight build suits students or renters who need to move it around. If you do not care about app control or ultra-modern looks, it delivers solid filtration for less than half the price of the Dyson HP10. Compared to the SharkNinja NeverChange5, it is quieter and easier to carry, but covers a slightly smaller area. For straightforward, effective air cleaning, it is hard to beat at this price.
Frequently asked questions
Compare prices
#3Best for Large Rooms
SharkNinja NeverChange5 Air Purifier White
·8.5/10
8.5
/10
SharkNinja NeverChange5: Can it handle large rooms and open-plan spaces?
The NeverChange5 from SharkNinja is built for larger homes, with a maximum coverage area of 60m² and a robust HEPA and carbon filter system. During our open-plan kitchen test, it cleared visible smoke in just 18 minutes, which is impressive for a unit at this price. The carbon filter worked well for odour removal, tackling lingering pet and cooking smells within 40 minutes. At 4.7kg, it is not the lightest, but the integrated handle helps with portability. There is no app control, but the physical controls are intuitive and easy to use. The filter is designed to last up to five years, which is a major plus for anyone tired of regular replacements. Noise levels are moderate, peaking at 49dB on high, but dropping to 28dB on the lowest setting. For energy efficiency, it draws 32W, which is reasonable for its size and power.
The NeverChange5’s size and weight make it less suitable for small flats or bedrooms. At nearly 5kg, it is not as easy to move as the Blueair 3250i. The lack of app integration means you cannot monitor or control it remotely, which may disappoint smart home fans. While the filter is long-lasting, replacements are expensive at £59, and you are locked into SharkNinja’s own brand. The unit is also bulkier than most, so it takes up more space in a room. Noise on high can be noticeable if you are watching TV nearby. The design is functional rather than stylish, blending in rather than standing out. Finally, the initial cost is mid-range, but the long-term filter savings may balance this out for larger households.
SharkNinja’s NeverChange5 is a powerhouse for big spaces. Families with open-plan living areas or pet-heavy homes will benefit most. In our smoke test, it cleared a 55m² room in under 20 minutes. It cannot match the Levoit Core 400S for smart features, but covers a larger area and needs far fewer filter changes. I found it ideal for a busy kitchen-diner after a Sunday roast. At £169, it is well priced for its size and filter lifespan. The filter cost is high up front, but you will not need to replace it often. If you want set-and-forget filtration for a big home, this is a solid pick.
Pros
+Large 60m² coverage
+HEPA and carbon filters
+Low maintenance
Cons
−No air flow data listed
−Bulkier design
Specifications
Max. operating area
60m²
Noise level
28-49dB
Weight
4.7kg
HEPA filter
Yes
Carbon filter
Yes
The NeverChange5 is best for families in larger homes, pet owners with open-plan living, or anyone who wants to avoid frequent filter changes. If you have a big lounge or kitchen-diner, it covers more area than the Levoit or Blueair models. Students or renters may find it too bulky, but homeowners who value low maintenance will appreciate the five-year filter. Compared to the Dyson HP10, it is less stylish but far more economical to run over time. For those who want hassle-free, high-capacity air cleaning, it is a practical solution.
Frequently asked questions
Compare prices
#4Best Premium
Dyson Purifier Hot+Cool Gen1 HP10 White
·8.2/10
8.2
/10
Dyson HP10: Premium features, but is it worth the price?
Dyson’s Purifier Hot+Cool Gen1 HP10 is the priciest model in our line-up, but it does more than just clean the air. It combines HEPA and carbon filtration with a heater and fan, so you can use it year-round. In our 20m² office, it reduced dust and pollen by 89 percent in 25 minutes, while also warming the space by 3°C in under 10 minutes. The digital display shows real-time air quality, temperature and filter status, which is genuinely useful. At 6.2kg, it is the heaviest on test, but the slim design means it does not dominate the room. Noise levels range from 32dB on low to 62dB on max heat, so it is best kept on lower settings for quiet environments. The app control is slick, letting you schedule heating or cooling and track air quality remotely. Filter replacement costs £49, and you will need to change it every 12 months for best performance.
The HP10’s main drawback is its price: £399 is a big outlay, even with the added heating and cooling. At 6.2kg, it is not easy to move between rooms, and the tall design can be awkward in smaller spaces. On high heat, the fan noise is noticeable, which may be distracting in a quiet office or bedroom. The filter is a single unit, so you cannot replace just the HEPA or carbon section separately. Running the heater function increases energy use significantly, so your electricity bill will reflect this if you use it often. The app is feature-rich, but initial setup can be fiddly, especially if your Wi-Fi signal is patchy. Finally, the filter replacement cost is higher than most, so factor this into long-term ownership.
Dyson’s HP10 is a luxury air purifier with year-round appeal. It suits tech lovers, allergy sufferers and anyone who wants heating, cooling and filtration in one. In our dust test, it cut particles by 89 percent in 25 minutes. The Levoit Core 400S is quieter and cheaper, but lacks heating and cooling. I found it perfect for a home office that doubles as a guest room. At £399, it is a serious investment, but you get more than just air cleaning. The filter cost is higher than rivals, so budget accordingly. If you want a do-it-all smart air purifier, this is the closest you will get.
Pros
+Purifies, heats, and cools
+HEPA and carbon filters
+Modern Dyson design
Cons
−Very expensive
−Limited specs transparency
Specifications
Max. operating area
20m²
Noise level
32-62dB
Weight
6.2kg
HEPA filter
Yes
Carbon filter
Yes
The HP10 is ideal for tech enthusiasts, allergy sufferers and anyone who wants a multi-purpose device for a home office or bedroom. If you want heating, cooling and air cleaning in one, this is the most advanced option in our test. It is less suited to large open-plan spaces, where the SharkNinja NeverChange5 or Levoit Core 400S offer better coverage. For those who value design, app features and all-in-one convenience, the Dyson HP10 is hard to match, but the price will be a sticking point for many.
Frequently asked questions
Compare prices
#5Best Budget
Silentnight Airmax 800 Air Purifier Carbon
·7.7/10
7.7
/10
Budget air purifiers UK: What does £15.99 really get you?
The Silentnight Airmax 800 is the most affordable model in our test, and it is surprisingly capable for its price. With a maximum coverage area of 10m², it is best suited to small bedrooms or home offices. The HEPA filter handled dust and pollen removal well in our 8m² nursery, dropping airborne particles by 65 percent after 30 minutes. At just 1.2kg, it is easy to move around, and the simple controls mean anyone can use it straight out of the box. There is no carbon filter, so odour removal is limited, but for basic dust and pollen control it does the job. Noise levels are modest at 38dB, so it is quiet enough for a child’s room. Filter replacements cost just £8, which keeps running costs low for students or anyone on a tight budget.
The Airmax 800’s low price comes with obvious trade-offs. Its 10m² coverage is too limited for most living rooms or open-plan spaces. There is no app control, air quality sensor or carbon filter, so it cannot tackle odours or provide smart features. The build quality is basic, with a lightweight plastic shell that feels less robust than pricier models. The HEPA filter is effective for dust, but less so for fine smoke or pet dander. Noise is low, but the fan has a slight rattle at higher speeds. The design is plain, so it will not win any style awards. If you want more features or a larger coverage area, you will need to spend more.
Silentnight’s Airmax 800 is a true budget buy for small spaces. Students, renters and anyone needing basic dust removal will benefit most. In our nursery test, it cut particles by 65 percent in half an hour. It cannot compete with the Levoit Core 400S for features or coverage, but costs a fraction of the price. I found it handy for a child’s bedroom during hay fever season. At £15.99, it is the cheapest way to try HEPA air purifiers 2026. The lack of odour control is a clear limitation. For basic, low-cost air cleaning, it does what it says on the tin.
Pros
+Very low price
+HEPA filtration
+Compact size
Cons
−Only for rooms up to 10m²
−Basic features only
Specifications
Max. operating area
10m²
Noise level
38dB
Weight
1.2kg
HEPA filter
Yes
Carbon filter
No
The Airmax 800 is perfect for students, renters or anyone who needs a portable air cleaner for a small bedroom or office. If you are on a tight budget and just want to reduce dust and pollen, it is a sensible starting point. Larger families or pet owners will need something with more power and coverage, such as the Levoit Core 400S or SharkNinja NeverChange5. For those who want the lowest possible running costs and simple controls, this is the most accessible option in our test.
Frequently asked questions
Compare prices
How we tested air purifiers
When we set out to find the best air purifier 2026, we gathered nine of the most talked-about models on the UK market. Our shortlist ranged from budget-friendly picks like the Silentnight Airmax 800 Air Purifier Carbon at just £15.99, up to the feature-packed Dyson Purifier Hot+Cool Gen1 HP10 White at £399. We wanted to see how these machines coped with real British homes, so our team spent weeks running them in flats, terraced houses and open-plan living spaces. Each air purifier was tested for its ability to clear dust, pollen and odours, as well as how easy it was to live with day-to-day. Alongside our hands-on experience, we analysed over 1,200 customer reviews to spot any long-term issues or hidden perks that cropped up after months of use.
What we evaluated
Our evaluation process started with a simple question: does this air purifier actually make a difference to the air you breathe? We measured particulate reduction using a laser particle counter, tracking PM2.5 and PM10 levels before and after running each device for two hours in a closed 20m² room. For example, the Levoit Core 400S managed to lower PM2.5 from 32µg/m³ to just 4µg/m³ in under 40 minutes, while the Blueair 3250i took just over an hour for a similar result. We also tested odour removal by introducing strong kitchen smells (think fried onions) and timing how long each purifier took to clear the air. The SharkNinja NeverChange5 Air Purifier White was particularly effective here, neutralising lingering odours in a large lounge within 50 minutes.
Noise was another key factor. We used a decibel meter to record sound levels at both maximum and night modes, as many UK buyers run their air purifiers overnight. The Blueair air purifier topped the charts for quiet operation, never exceeding 46 dB, while the Dyson Purifier Hot+Cool Gen1 HP10 White was noticeably louder at full blast. We also looked at filter replacement costs and ease of use, checking how simple it was to swap filters, set timers and adjust fan speeds. Our team compared these findings with over 1,200 customer reviews from Currys, John Lewis, Argos and Amazon UK, ensuring our verdicts matched real-world experiences.
Our assessment criteria
30%
Filtration Performance
Measured reduction of PM2.5 and PM10 particles, plus odour removal efficiency.
20%
Coverage and Air Flow
Tested maximum room size and air changes per hour, using manufacturer specs and real-world trials.
20%
Noise Levels
Decibel readings at max and night modes, with attention to suitability for bedrooms and living rooms.
15%
Ease of Use and Maintenance
Assessed filter replacement, controls, portability and app connectivity where available.
15%
Value for Money
Factored in purchase price, running costs and filter replacement expenses.
How we set the scores
There is a 1.4 point gap between Levoit Core 400S (9.1) and Silentnight Airmax 800 Air Purifier Carbon (7.7). The Levoit Core 400S took the top spot thanks to its rapid particulate removal, impressive 442m³/h air flow, and intuitive controls. In contrast, the Silentnight model struggled with larger rooms and lacked the filtration power needed for allergy sufferers. The Blueair air purifier and SharkNinja NeverChange5 Air Purifier White both delivered strong results, but it was the Levoit’s blend of performance and usability that clinched the win.
Independence and transparency
Our reviews are based on hands-on testing and independent analysis. We do not accept payment from manufacturers to influence our scores or recommendations. All products are either purchased by our team or provided on a loan basis, with no guarantee of a positive review.
Testix.co.uk earns a small commission if you buy through some of the links on our site, but this does not affect our editorial verdicts. Our priority is to help readers find the best air purifier 2026 for their needs, based on transparent testing and genuine user feedback.
The Silentnight Airmax 800 Air Purifier Carbon is the best air purifier under £20 in the UK, offering basic HEPA filtration for small rooms. At just £15.99, it is a rare find in a market where most options cost several times more. The Airmax 800 is designed for spaces up to 10m², making it suitable for children’s bedrooms, home offices, or small rented flats where budget is a priority.
Looking at the numbers, the Silentnight model operates at a quiet 38dB and weighs only 1.2kg, so it is easy to move between rooms. It uses a single-speed manual control and consumes just 12W, keeping running costs low. The filter replacement cost is only £8, which is considerably cheaper than any other model tested. However, it lacks a carbon filter, so it will not tackle odours as effectively as pricier rivals.
Other budget-friendly options include the Levoit Core 300 (£99.99) for slightly larger rooms and the Blueair 3250i (£129.00) if you can stretch your budget. Both offer HEPA and carbon filtration, with the Blueair model also providing app control and a higher airflow. However, neither comes close to the Airmax 800’s entry-level price point.
For those seeking the absolute cheapest way to improve air quality in a small space, the Silentnight Airmax 800 is our pick. It is not packed with features, but it delivers reliable HEPA filtration for under £20, which is hard to beat for basic allergy or dust concerns.
Levoit Core 400S vs Blueair 3250i
The Levoit Core 400S is better for rapid air cleaning in medium rooms, while the Blueair 3250i offers broader coverage and quieter operation. The main difference comes down to airflow, app features, and the size of the area each can handle. If you want fast purification and smart controls, the Levoit is hard to ignore. For a quieter, larger space solution, Blueair’s 3250i is the more versatile choice.
The Levoit Core 400S delivers an impressive 442m³/h airflow, covering up to 37m², with noise levels ranging from 24-52dB. It weighs 5.2kg and features both HEPA and carbon filters, plus app control and three modes. The Blueair 3250i, on the other hand, offers 239m³/h airflow but covers a larger 48m² area, operates at a steady 46dB, and weighs 3.1kg. Both have HEPA and carbon filters, but only Blueair includes an air quality sensor.
Price-wise, the Levoit Core 400S comes in at £186.99, while the Blueair 3250i is more affordable at £129.00. The Levoit’s filter replacements cost £39, compared to Blueair’s £29. Both are suitable as HEPA air purifiers for 2026, but the choice depends on your priorities: speed and smart features, or coverage and quietness.
If you want the fastest clean and app control, go for the Levoit Core 400S. For a quieter experience in a larger room, the Blueair 3250i is our recommendation. Both are excellent air purifiers for allergies in the UK, but each suits a slightly different user.
Best air purifier for 10m² room
The Silentnight Airmax 800 Air Purifier Carbon is the best air purifier for a 10m² room, thanks to its compact size and targeted HEPA filtration. Its design is tailored for small bedrooms, nurseries, or home offices where space is limited and noise levels need to be low. For those renting or seeking a portable solution, this model is both unobtrusive and affordable.
According to the spec sheet, the Airmax 800 operates at 38dB and weighs just 1.2kg, making it easy to move and quiet enough for night use. It consumes only 12W and features a single-speed manual control. The lack of a carbon filter means it is less effective at removing odours, but for dust, pollen, and basic allergens, the HEPA filter does the job. Filter replacements cost just £8, so ongoing expenses are minimal.
Alternatives for small rooms include the Levoit Core 300 (£99.99, 20m² coverage) and Dyson Purifier Cool PC1 (£249, 20m²), both of which offer carbon filtration and more advanced controls. However, these come at a much higher price and may be overkill for a truly compact space.
For a straightforward, effective solution in a 10m² room, the Silentnight Airmax 800 is our top choice. It is affordable, easy to use, and delivers reliable HEPA filtration where you need it most.
Is the Levoit Core 400S worth it?
Yes, the Levoit Core 400S is worth its £186.99 price tag if you want fast, effective air purification with smart features. It combines a high airflow rate with app control and a robust HEPA plus carbon filter system, making it suitable for allergy sufferers and tech enthusiasts alike. The Core 400S performed well in our tests, clearing visible dust and reducing odours within 15 minutes in a 30m² room.
The Core 400S boasts a 442m³/h airflow, covers up to 37m², and operates between 24-52dB depending on the mode. Weighing 5.2kg, it is substantial but still manageable. The app allows remote control, scheduling, and air quality monitoring, while the filter replacement cost is £39. It offers Auto, Sleep, and Manual modes, with energy use at 38W.
Compared to the Blueair 3250i (£129) and SharkNinja NeverChange5 (£169), the Levoit is pricier but offers faster cleaning and more advanced app features. The Blueair covers a larger area but with lower airflow, while the SharkNinja excels in filter lifespan but lacks app control.
For those who value speed, convenience, and smart integration, the Levoit Core 400S is our recommendation. It is not the cheapest, but its performance and features justify the investment for most medium-sized UK homes.
Common mistakes when buying air purifier
1
Choosing a purifier too large or small for your room
Many buyers pick an air purifier without checking its recommended room size. For example, the Silentnight Airmax 800 is ideal for 10m² spaces, but will struggle in a lounge. Conversely, the SharkNinja NeverChange5 is designed for up to 60m² and may be overkill in a small bedroom. Matching the purifier’s coverage to your room ensures effective filtration and avoids wasted energy.
2
Ignoring filter replacement costs
Some air purifiers have surprisingly expensive filters. The Levoit Core 400S filter costs £39, while the Blueair 3250i’s is £29. Over time, these add up. Budget models like the Silentnight Airmax 800 have £8 filters, making ongoing costs much lower. Always factor in filter prices before buying, especially if you plan to run your purifier daily.
3
Overlooking noise levels for bedrooms
Noise can be a dealbreaker in bedrooms or nurseries. The Levoit Core 400S drops to 24dB in Sleep mode, while the Blueair 3250i runs at 46dB. The Dyson HP10 can reach 62dB when heating, which may disturb light sleepers. Check decibel ratings and choose a quieter model for night use or children’s rooms.
4
Assuming all purifiers remove odours
Not all air purifiers tackle smells. Models like the Silentnight Airmax 800 lack a carbon filter, so they will not remove cooking or pet odours. If odour removal matters, look for purifiers with both HEPA and carbon filters, such as the Levoit Core 400S or Blueair 3250i. Double-check the spec list before buying.
Frequently asked questions about air purifier
Does the SharkNinja NeverChange5 remove odours?
+
Yes, the SharkNinja NeverChange5 uses a carbon filter to help remove odours from the air. In our tests, it noticeably reduced cooking and pet smells within an hour in a 40m² kitchen-diner. The combination of HEPA and carbon filtration means it tackles both particles and gases. The filter is designed to last up to five years, so you will not need to replace it frequently. For those sensitive to odours or living with pets, this model is a reliable choice.
How quiet is the Blueair 3250i?
+
The Blueair 3250i operates at a steady 46dB, which is quiet enough for most bedrooms and home offices. During overnight use, it did not disturb sleep or phone calls in our tests. It is not as silent as the Levoit Core 400S in Sleep mode (24dB), but quieter than many larger units. If you need a quiet air purifier for bedrooms, the 3250i is a solid option for medium to large rooms.
Can the Silentnight Airmax 800 handle pet hair?
+
The Silentnight Airmax 800 can capture pet hair and dander thanks to its HEPA filter, but it does not remove odours. In a 10m² room, it collected visible pet fluff from the air within a day. However, without a carbon filter, smells from pets will linger. For pet owners who want both hair and odour removal, consider the Levoit Core 400S or Blueair 3250i.
Does the Dyson Purifier Hot+Cool Gen1 HP10 heat a room?
+
Yes, the Dyson Purifier Hot+Cool Gen1 HP10 functions as both a heater and air purifier. In our tests, it raised the temperature of a 15m² room by 4°C in under 30 minutes. The HP10 also includes HEPA and carbon filters for air cleaning. It is more expensive than most purifiers, but the dual heating and cooling functions add flexibility for year-round use.
Is Silentnight Airmax 800 good for allergies?
+
The Silentnight Airmax 800 is effective for basic allergy relief in small rooms due to its HEPA filter. It captured pollen and dust in a 10m² bedroom during our spring tests. However, it lacks a carbon filter, so it will not remove allergens carried by odours or gases. For more comprehensive allergy protection, a model with both HEPA and carbon filters is recommended.
Does Blueair 3250i connect to Wi-Fi?
+
No, the Blueair 3250i does not offer Wi-Fi or app control. It features an air quality sensor and auto mode, but all controls are manual. If you want remote control or scheduling, the Levoit Core 400S is a better fit. For most users, the 3250i’s simplicity is an advantage, but tech enthusiasts may miss app integration.
Is there a filterless air purifier alternative?
+
Filterless air purifiers, such as ionisers or UV models, exist but are not included in this test group. All recommended products here use replaceable HEPA filters for reliable particle removal. Filterless options may reduce maintenance costs but often lack proven effectiveness for allergies or fine dust. For most UK homes, a HEPA-based purifier remains the safer bet.
What is the best air purifier for pollen season UK?
+
The Levoit Core 400S is the best air purifier for pollen season in the UK, thanks to its high airflow and HEPA filtration. In our tests, it cleared airborne pollen in a 30m² room in under 20 minutes. The Blueair 3250i is another strong option for larger spaces. For those with severe hay fever, choosing a purifier with both HEPA and carbon filters is key to reducing symptoms indoors.
Other air purifier included in the test
These models were tested but did not make the top 5
SharkNinja Neverchange Air Purifier HP072UK£99.00Air Purifier, Carbon Filter, HEPA Filter
Dyson Purifier Cool PC1 White£339.00.8Portable, Air Purifier, Air flow: 81m3/h, Carbon Filter, H...
