Sensors monitor air quality and adjust fan speed automatically to work 24 hours a day, 7 days a week 3 The Winix 5500-2 is more about practicality than looks. It comes with a handy remote control, so you don’t have to get up each time you want to switch it on or off, and there are enough settings to suit all kinds of needs, including a unique ‘Plasmawave’ function. It may not look the prettiest, but it offers a decent CADR and a user-friendly design. Performance:It achieved a CADR of 247.5, 232.3, 241.3, with a similar performance across smoke, dust and pollen. While this is a little lower than those mentioned above, it’s worth accounting for the size difference, which is why this air purifier features so high on the list. It was also top of the class for energy consumption, requiring just 0.082 kWh over 24 hours. Taking account of the eco setting as well, air purifiers won’t get much greener. Where it falls down however is noise — it produced 36.8dB on the lowest setting and 58.3dB on its highest, which is pretty surprising considering the size.Having said that, a colleague bought this air purifier for her allergies — and it’s changed her life. Eco mode turns the fan on and off every 10 minutes, if the air quality is detected as good for 30 minutes, saving 50% energy (Energy Star certified) Night mode senses the rooms lighting to turn off the display lights and the Plasma Ion generator, and reduces noise to whisper quiet levels⁴.

If you’re thinking about buying an air purifier, bear in mind that this does mean it will be on open display in your room. You might want to opt for a design which is aesthetically pleasing or matches your décor as a consequence. For instance, you can replace the color of the exterior skirt on the Blueair Blue Pure 211+ Auto to suit your taste. Don’t buy a design that’s bigger than necessary for the same reason. If it’s only a small room, you don’t want a chunky design out in the open, taking up valuable space. While looks are important, don’t forget that performance always comes first, which is where our tests can help. There’s no point in buying an attractive air purifier if it makes little difference to the quality of the air. Should I get a smart air purifier? Some devices have HEPA-type filters, which work similarly but aren't held to the same performance standards. The IQAir HealthPro Plus uses a HyperHEPA filter, which is believed to capture even smaller particles than a True HEPA filter. Performance: The performance may not seem strong with CADRs of 123, 107 and 96 across smoke, dust and pollen. However, low CADRs do not necessarily equate to a poor product, they just mean it won’t suit larger spaces. So, as long as the room is no more than 190 sq ft, you can expect a premium performance. I also found this air purifier to be quiet in operation (51.6 dB at max) and energy efficient (consuming 0.154 kWh over 24 hours), so what’s not to like? Plasma Ion Technology projects positive and negative ions into the air to target and neutralise airborne impurities and pollutants for cleaner air The AP300 Instant™ Air Purifier is ideal for larger spaces like living rooms. It can remove 99.97% of ultrafine airborne impurities and 99.9% of virus, bacteria and mold particles from treated air ¹ .The Blueair Blue Pure 211+ Auto will suit most households. It’s a substantial air purifier, and offers first-rate air purification capabilities alongside a premium and simple-to-operate design. There’s enough settings to cover the basics, it's attractive, and can be customized to your liking. Design:While it has one button to control everything, this air purifier still has plenty of settings. There are three fan speeds, the lowest of which acts as a night mode and a separate auto setting. There’s a light on the front to indicate the quality of the air and the button on top also acts as a filter replacement indicator. The only thing that’s really missing is a timer, so you can't set it and leave it, but otherwise you have everything you need. Inside, you will find a HEPASilent and carbon filter to deodorize. Damage resulting from accident, alteration, misuse, abuse, neglect, unreasonable use, use contrary to the operating instructions, normal wear and tear, commercial use, improper assembly, disassembly, failure to provide reasonable and necessary maintenance, fire, flood, acts of God, or repair by anyone unless directed by an Instant Brands representative. However, the AP300 will continue working in the dark—just not produce distracting light that can interfere with your beauty sleep. Instant Air Purifier AP300 Cylindrical 360° Design

Based on testing of SARS-CoV-2 conducted in laboratory conditions, using a 13 cubic foot chamber to protect scientists from exposure. Not proven to prevent COVID-19. Performance was measured after 10 air exchanges passing through the air purifier operating at its minimum fan speed and with plasma ion technology on. Actual results may vary, depending on usage environment (temperature, humidity, room size and shape, nature and number of particulates in air, etc.), placement of the unit, and product usage (operation duration, operation mode, etc.). Best results with continuous use. The Honeywell HPA300 might not be the prettiest to look at, but it’s straightforward to operate and will get the job done. Just keep in mind there’s no auto mode, and it’s not ideal in terms of noise or energy consumption. Plasma Ion Technology and Triple Protection Filtration removes 99.97% of ultrafine airborne impurities, including allergens and pollen, and 99.9% of virus, bacteria and mould particles from treated air(1)Dust, pollen, smoke removal is how well a model cleared air of fine clay dust and cigarette smoke when operating at a low speed that was typically one setting above the lowest speed. Many models have multiple speeds and the lowest is not as effective at cleaning the air. A model that scores well for dust removal should perform comparably for pollen. Performance claims were calculated based on single particle testing, A. Niger (fungus) E. Coli (bacteria), S. Epidermidis (baction) or Phi-X174 (virus), under laboratory conditions after 1 hour of operation of the air purifier at maximum fan speed and with plasma ion technology enabled. Actual results may vary depending on operating environment (temperature, humidity, room size and shape, nature and number of airborne particles, etc.), device placement, and product usage (running time, operating mode, etc.). Best results with continuous use. True HEPA-13 filter captures 99.97% of dust, dander, pollen, allergens and other ultrafine impurities in the air

The Blueair Blue Pure 411 Auto offers a small and effective design, measuring 16.7 x 7.9 x 7.9 inches while suiting rooms up to 190 sq ft. It has a neat and pleasing appearance — looking somewhat like a large battery with a fitted pre-filter skirt and a single button on top. There’s a range of pre-filter colors available, including pink, blue and green, so this could easily suit a kid’s bedroom. Size and portability is one of the 10 things you need to know before buying an air purifier. CLEAN AIR IN MINUTES: Filters up to 1,140 sq ft per hour, to exchange 228 sq. ft. 5 times per hour, allowing you to breathe cleaner air in minutes, based on 3rd party testing. EXCEPT AS EXPRESSLY PROVIDED HEREIN AND TO THE EXTENT PERMITTED BY APPLICABLE LAW, INSTANT BRANDS MAKES NO WARRANTIES, CONDITIONS OR REPRESENTATIONS, EXPRESS OR IMPLIED, BY STATUTE, USAGE, CUSTOM OF TRADE OR OTHERWISE WITH RESPECT TO THE APPLIANCES OR PARTS COVERED BY THIS WARRANTY, INCLUDING BUT NOT LIMITED TO, WARRANTIES, CONDITIONS, OR REPRESENTATIONS OF WORKMANSHIP, MERCHANTABILITY, MERCHANTABLE QUALITY, FITNESS FOR A PARTICULAR PURPOSE OR DURABILITY.

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When installed in Instant Air Purifier, works to remove 99.9% of bacteria and mould from treated air 1 Some modern air purifiers, such as the Blueair Health Protect 7470i, can be connected to the Wi-Fi and linked to an app on your smartphone. In doing this, you can control the air purifier remotely, including changing the fan speed or setting a schedule. For some air purifiers, the app will also breakdown the quality of the air and let you monitor it more precisely. WHISPER QUIET NIGHT MODE : Light sensor automatically turns off displays and lowers sound to whisper quiet levels when it's time to go to bed