There are three filters inside the purifier – a vacuumable pre-filter to pick up larger items like pet hair, a HEPA 13 filter to take care of smaller particles like dust and pollen and a carbon filter to remove odours from the air. To go with the basic controls for fan speed and a mode switch, the 5440i is a smart purifier that connects to WiFi and works with the Blueair app; the app allows you to turn down the ambient lighting on the purifier, as well as assigning different products to locations around your house, if you’ve got more than one Blueair product at home.

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Editorial independence means being able to give an unbiased verdict about a product or company, with the avoidance of conflicts of interest.To test an air purifier’s performance, we use a three-second burst spray from a can of insecticide – a source of particulate matter and VOCs – directed into the middle of the room. The ATP6100I is tall and cylindrical, making it stylish enough to display but not so big that it dominates a room. In testing, the Core 300S managed pretty well with our demanding smoke test, and it took 14 minutes for the air quality to normalise. Cheaper purifiers might only monitor for dust, while higher-end devices can pack a greater range of sensors allowing them to react to a wider range of particles. There’s, bizarrely, no option for remote control through the Ikea app, although you can add this functionality by switching to HomeKit control.

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An air purifier must run continuously for it to be effective, which means it probably will run while users are watching TV or talking. The Turndown service ramps up an hour before you go to bed, again taking the timings from the bedtime you set in the app. These filter types can potentially release ozone, although UVGI and photocatalytic oxidation filters release minimal amounts. While this may be double the time that was taken by our most powerful purifier, it’s still a decent showing for a purifier that’s capable of dealing with more everyday workloads.

In addition, there’s also a wider choice of manual fan speeds than with the physical controls, and the ability to schedule the purifier’s operation, which we found especially useful, given the purifier will only capture dust and dirt when it’s on. The spongy prefilter makes a difference in eliminating pet-related odors and allergens within a 215-square-foot space. The Levoit Core 300S represents a useful step up from the more entry-level purifiers that are designed for smaller rooms.

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HEPA filter which should be replaced every 3 months, 4 Speed Fan, Durable, Eco-Friendly, Lightweight, Long Lasting Usage, Portable, Powerful 4-Stage air filtration system, Removes 99.In placing the 5440i in a particularly dusty spot at home, we found the purifier to be rather efficient and we had to vacuum far less often. inch dimensions and 1-pound weight allow it to sit on top of a dresser, desktop, or nightstand without consuming valuable square footage. The speeds to choose from are high, medium and low, low is perfect for night time as it's ultra-quiet.

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Volatile Organic Compounds (VOCs) are harmful chemicals that are often found in cleaning products, paints, and some beauty products. Performance was good in our tests: our smoke pellet was cleared out in 11m 57s, although it took a full 25m until the app reported that the air was fully clean. Thankfully, an air purifier can go a long way to cleaning up the air quality in your home, allowing you to breathe easy whether you’re working from a home office, relaxing on the couch in the evening or settling into bed.Today, we have millions of users a month from around the world, and assess more than 1,000 products a year.