Blueair DustMagnet™ 5240i Air Purifier
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Introducing the newly released Blueair DustMagnet™ 5240i - an innovative air purifier designed to catch 99% of dust before it settles on floors and surfaces so you can dust and vacuum less. Equipped with Blueair's unique HEPASilent™ filtration technology, it completely filters the air in a 20 m² room every 12.5 minutes, significantly reducing the amount of dust, smoke and pet dander in the air.
With double filters for optimal fine particles removal, positively charged pre-filters, that attract dust like a magnet, a convenient top surface that doubles as a side table, smart connected features, and finally, a dual inlet and outlet system, DustMagnet™ 5240i will keep your home free of airborne pollutants with minimum effort.
Excellent choice for:
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Shoppers with rooms up to 27 m2.
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People living with asthma and/or allergies.
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Anyone who wants to spend less time dusting and vacuuming.
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Pet owners.
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Customers who want to eliminate household odours from pets, cooking, and smoking.
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Shoppers who want to get rid of harmful VOCs.
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Those who live near busy roads.
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Parents of young children.
Why we love it:
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Charged stainless steel pre-filters catch 99% of dust before it settles on floors and surfaces.
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Two HEPASilent™ combo filters placed each at the top and bottom of the air purifier trap up to 99.97% of airborne pollutants down to 0.1 microns in size.
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Carbon particles integrated through the filter media effectively remove gases, VOCs, smog, and household odours from pets, smoke, and cooking.
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The Auto mode function with a smart sensor that monitors air quality conditions in real-time and automatically adjusts to optimise performance, ensuring that you breathe clean air in your home.
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Dual air inlet and outlet system for optimal airborne dust removal.
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Features a convenient top surface that doubles as a side table.
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Produces a uniquely high clean air delivery rate (CADR) for more clean air at lower fan speeds.
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Whisper-quiet so you can sleep without distractions (23 dB(A)).
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Ozone-free technology.
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Certified by the Association of Home Appliance Manufacturers (AHAM).
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The filters are recyclable, so the only thing you're adding back to the environment is clean air.
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Change the filter every 6 - 12 months, depending on your environment.
Reviewed by our team:

"I really like the mixture of innovative ideas that Blueair designers implemented into the DustMagnet™ 5240i. Magnetic pre-filter plates seamlessly integrate into the unit and collect dust, just like a magnet. All you need to do is just plug it in, turn it on and let it do its thing. The Blueair's HEPASilent™ filtration technology takes care of everything that's not supposed to be in the air you breathe." - David, customer support.
Click the "More Info" tab now to learn more or "Add To Basket" to place your secure order.
More Info
The Blueair DustMagnet™ 5240i - designed for a life with less cleaning
The Blueair DustMagnet™ 5240i is the latest innovative air purifier from the Swedish manufacturer. Designed to help you breathe perfectly clean air in your home, it catches 99% of dust before it settles on floors, furniture and other surfaces. The air purifier is suitable for rooms up to 27 m2.
The HEPASilent™ ozone-free technology takes care of airborne pollutants
The patent-pending HEPASilent™ technology is Blueair's most advanced filtration technology ever. It combines two time-tested filtration technologies - electrostatic charging and mechanical to remove up to 99.97% of airborne particles down to 0.1 microns. As a result, it traps even the smallest viruses and microplastics besides dust, pollen, pet dander, bacteria and smoke.
Airborne particles receive an electrical charge that makes them ‘sticky’ – so instead of simply passing through, smaller particles stick to the combination filter.
The 3-stage filtration ensures that you always breathe perfectly clean air
The two stainless steel positively charged pre-filters effectively attract dust particles just like a magnet catching 99% of dust before it settles on floors, furniture and other surfaces.
The two HEPASilent™ combo filters placed each at the top and bottom of the air purifier trap up to 99.97% of airborne pollutants down to 0.1 microns in size. The filters minimise the number of airborne particles that can trigger allergy symptoms, including pollen, dust, mould spores, pet dander, viruses, bacteria, and fine smoke particles.
The carbon particles integrated throughout the media of the filters effectively remove gases, VOCs, smog, and household odours from pets, smoke, and cooking.
Certified by AHAM to provide you with the highest levels of allergy prevention
The AHAM (Association of Home Appliance Manufacturers) certified the DustMagnet™ 5240i to ensure that you are using an air purifier that can genuinely improve the air quality in your home and make a real difference in your life.
The HEPASilent™ technology provides a higher particle Clean Air Delivery Rate (pCADR) than conventional methods of only mechanical filtration. This enables the DustMagnet™ 5240i to filter the air at the rate recommended by the industry - 4.8 x per hour (or about every 12.5 minutes) in a room up to 20 m².
Proactively adapts to you and your home
You can control the air quality in your home wherever you are through the Blueair app and smart connected features like "Welcome home" and "Clean air ETA".
Additionally, DustMagnet™ comes with the "Auto" mode function and a smart sensor that continuously monitors the air quality in your home. It automatically increases the fan speed when pollution levels rise and slows it down when the air is clean again.
The air purifier shows the air quality levels for particulate matter (PM) using a colour scale on the air quality indicator.
Last but not least, you can adjust settings like child lock, night mode schedule, LED brightness, and many more remotely via the Blueair app or Amazon Alexa enabled device.
Powerful dual air inlet and outlet system
DustMagnet™ air purifier is designed with dual air inlets and outlets for optimal airborne dust removal. Purified air is released at a precise angle, creating a vortex effect in your room.
Voice control enabled
As a great addition, you can conveniently control the air purifier with your voice instructions by using compatible services such as Amazon Alexa, Google Home or Tmall Genie.
Modern Scandinavian design
The Blueair DustMagnet™ 5240i has been inspired by functionality. With a convenient top surface that doubles as a side table, this air purifier seamlessly blends into your home like a great looking piece of Scandinavian furniture.
Click the "Specification" or another tab now to learn more or "Add To Basket" to place your secure order.
Specification
Model | DustMagnet™ 5240i |
Maximum Recommended Room Size (GB 18801-2015 Standard) | 27 m2 |
CADR (Clean Air Delivery Rate) |
Pollen - 238 m3/h (140 CFM) Dust - 226 m3/h (133 CFM) Smoke - 232 m3/h (136 CFM) |
Combination Filter Grade | HEPASilent™ removes at least 99.97% of particles 0.1 microns in size |
Filtration Stages | 3 |
Number Of Filters | 2 |
Particle Sensor | Yes |
Gas Sensor | No |
Temperature Sensor | No |
Relative Humidity Sensor | No |
Filter Replacement Indicator | Yes |
Noise Level | 23 - 47 dB(A) |
Rated Voltage | 220 - 240 V, 50/60 Hz |
Power Consumption | 4 - 22 W |
Recommended Filter Change | Every 6 - 12 months depending on your environment |
Fan Speed Levels | 1-2-3-Auto-Night |
Wi-Fi Connectivity | Yes, compatible with 802.11 b/g/n routers on a 2.4GHz Wi-Fi network band |
Voice Control | Amazon Alexa, Google Home or Tmall Genie |
Child Lock | Yes |
Night Mode | Yes |
Dimensions (H x W x D) cm | 52.0 x 22.0 x 22.0 |
Weight (kg) | 4.5 |
Manufacturer's Guarantee | 12 months |
Downloads
Blueair DustMagnet™ instruction manual
Accessories

Blueair DustMagnet™ 5210i/5240i Air Purifier Replacement Filter Set
The two HEPASilent™ combo filters placed each at the top and bottom of a DustMagnet™ air purifier trap up to 99.97% of airborne pollutants down to 0.1 microns in size. The filters minimise the number of airborne particles that can trigger allergy symptoms, including pollen, dust, mould spores, pet dander, viruses, bacteria, and fine smoke particles.
The carbon particles integrated throughout the media of the filters effectively remove gases, VOCs, smog, and household odours from pets, smoke, and cooking.
Delivery And Returns
Order confirmation
As soon as you place your order, you will receive an order confirmation e-mail. We will automatically reach out to our supplier to confirm that the item is in stock. If your item is in stock, we will process the charges to your credit or debit card.
Free Delivery On Orders Over £50
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Dispatched directly from a supplier in the UK.
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Order processing time: 1-2 business days.
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Estimated delivery time: 1-2 business days.
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Orders are not shipped or delivered on weekends or during public holidays.
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If we are experiencing a high volume of orders, shipments may be delayed by a few days.
Free Returns
Naturally, we hope you'll love your purchase, but it's OK to change your mind.
Our return policy lasts 14 days.
For full information, please read our returns and refunds policy.
CUSTOMER QUESTIONS
ASK A QUESTION-
How often do I need to clean the magnetic pre-filters?
For best performance clean the pre-filters weekly.
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How often do I need to replace the combination filters?
To maintain optimum performance, Blueair recommends changing the filters every 6-12 months, depending on your environment. The air purifier calculates the remaining lifetime of the filters based on usage and sensor readings and indicates when it is time to replace the filter.
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How we give back
For every product you buy we donate £2 through JustGiving to "Cots for Tots" - the special care baby charity for sick and premature babies at Bristol’s Special Care Baby Unit at St. Michael’s Hospital.