Best smart air purifier 2024: Let's clear the air

According to the World Health Organisation, indoor air pollution was responsible for around 3.2 million deaths in 2020. Whilst the majority of these deaths were due to cooking on open fires or inefficient stoves, air pollution is a problem in all almost every household on the planet, with common household items such as cleaning products or paint omitting volatile organic compounds (VOCs) that are harmful to health.

Thankfully, it's possible to remove the vast majority of the pollutants in your home using an air purifier. These clever devices can suck in polluted air, trap the pollutants, and release clean air back into your home. Smart air purifiers take things a step further, allowing you to monitor your indoor air quality on your phone, even when you're away from home, and ensure that the air in your home is always as clean as possible.

If you're looking to improve the air quality in your own home, then here are some of the best smart air purifiers that you can get your hands on right now.

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Best smart air purifier: Our top picks

Coway Airmega 400S

1. Best smart air purifier overall

A great smart air purifier that can tackle large rooms

The Coway Airmega 400S can capture up to 99.999 per cent of particles down to a size of just 0.01 microns. It's compatible with Alexa and Google Assistant, and can handle rooms up to 1,560 square feet. It can even automatically order new filters.

Pros

Ideal for rooms up to 1,560 sq feet
Triple-stage filter for exceptional filtration
Compatible with Alexa and Google Assistant

Cons

Expensive
Large footprint

The Coway Airmega 400S is ideal for large rooms up to 1,560 square feet. You'll need a large room for this air purifier, as it's definitely not the smallest on this list. However, the stylish design ensures that it doesn't feel obtrusive. The multi-stage filtration system has a pre-filter to capture larger particles such as pet hair, dander, and dust. The activated carbon filter traps odours and VOCs, and the Green True HEPA filter traps fine dust, pollen, bacteria, and viruses. Coway states that it can capture up to 99.999 per cent of nano-sized particles down to a size of just 0.01 microns.

The Airmega 400S is app-enabled, allowing you to view the current air quality, set up a schedule, and adjust the fan settings. It's compatible with both Alexa and Google Assistant, so you can control your air purifier with your voice, and you can even use the Dash Replenishment service to automatically re-order filters for your air purifier.

Smartmi Air Purifier P1

2. Best smart air purifier for compatibility

Great for smaller rooms, and works with Alexa, Google, and Siri

The Smartmi Air Purifier P1 works with all the major voice assistants: Alexa, Google Assistant, and Siri, with HomeKit compatibility being quite rare for air purifiers. It has a HEPA filter to remove PM2.5 particles, but there's no monitoring for VOCs. Its small size also makes it ideal for smaller rooms.

Pros

Alexa, Google Assistant, and HomeKit compatible
Great price
Small footprint

Cons

No VOC monitoring
Can't cope with larger rooms
Won't remove odours

The SmartMi Air Purifier P1 is the perfect air purifier if you're looking at something that works with the most popular smart home ecosystems. That's because it's compatible with Alexa and Google Assistant, and unlike most of the other air purifiers on this list, it's also compatible with Apple HomeKit. That means you control your SmartMi Air Purifier P1 with Siri on your iPhone, Apple Watch, or HomePod. Using the app, you can see the current air quality, pollen, and PM2.5 levels, and can set a schedule for when the device is active.

It's intended for smaller rooms up to 320 square feet, but its smaller size means it won't take up too much space, fitting easily on a side table. It's also easy to move around, with a handle for easy relocation. The SmartMi P1 uses an H13 HEPA filter and can detect and filter PM2.5 and PM10 particles, but there's no VOC monitoring.

Dyson Pure Hot + Cool HP07

3. Best smart air purifier for heating and cooling

A fan, heater, and air purifier in one device, with HomeKit support.

The Dyson Pure Hot + Cool HP07 is three devices in one. It's a fan to cool you down on hot days, a heater to warm up the room on cold days, and a smart air purifier. Its compatible with Alexa and Google Assistant, but also offers HomeKit support, too. It works best with smaller rooms.

Pros

Fan for cooling
Heated air distibution
Siri, Alexa, and Google Assistant support

Cons

Expensive
Can't contol heating via app
Not ideal for larger rooms

Why pay for three devices to heat, cool, and purify your air, when you can get one device that does all three? That's the Dyson Pure Hot + Cool Air Purifier. A combination of active carbon and H13 HEPA filters captures up to 99.97 per cent of particles that are 0.3 microns in size, as well as removing odours and VOCs. It's rated for rooms up to 290 square feet. This device doesn't just offer air purification, however; the built-in fan can cool your room when needed, or project heat throughout the room to warm things up. Dyson is well-known for its high-quality products and this is no exception.

The Dyson Pure Hot + Cool Air Purifier is compatible with Alexa, Google Assistant, and Siri, allowing you to control purification and cooling with your voice using your favourite voice assistant. You can only control the heating using the included remote control, however. Using the app you can monitor and control your air quality, or enable modes such as the Night mode which uses the quietest settings and dims the display.

LEVOIT Core 400S

4. Best smart air purifier for larger rooms

A powerful smart air purifier that can handle larger rooms and remove VOCs.

The Levoit Core 400S is a smart air purifier that's suitable for rooms up to 1,980 square feet and uses a three-stage filter that can trap dust, pollen, bacteria, odours, and VOCs. It's compatible with both Alexa and Google Assistant.

Pros

Suitable for larger rooms
Three stage filter
Removes odours and VOCs

Cons

Not HomeKit compatible
Not the quietest option
App can be finicky

If you're looking for an air purifier for a larger room, then the Levoit 400S is a good option. It's suitable for rooms up to 1980 square feet and uses a three-stage filtration system. There's a pre-filter for larger particles, an H13 True HEPA filter, and an activated carbon filter to trap odours, smoke, and VOCs. It's rated as trapping 99.97 per cent of pollutants as small as 0.3 microns. It's also a stylish cylindrical design that won't look out of place in your living room or bedroom.

The Levoit Core 400S is compatible with Alexa and Google Assistant, allowing you to control your air purifier with just your voice. The VeSync app allows you to monitor your current air quality, and view graphs of the changes in air quality over time. You can also set schedules for when the air purifier will run or activate the sleep mode for the quietest settings. There's also a range of other Levoit smart air purifiers for larger or smaller rooms.

Xiaomi Mi Air Purifier 3H

5. Best value smart air purifier

A great value smart air purifier with a powerful app.

The Xiaomi Mi Air Purifier shows that you don't need to break the bank to get an air purifier that can improve your indoor air quality and have great smart capabilities. The triple-layer filter traps dust, pollen, bacteria, VOCs, and odours, and the app allows you to create clever automations.

Pros

Great price
Powerful app
Touchscreen display

Cons

Not the most stylish design
Not HomeKit compatible
App can be difficult to set up

The Xiaomi Mi Air Purifier is a low-cost option that can still do a great job. It uses a triple-layer filter that combines a pre-filter, True HEPA filter, and activated carbon filter to remove 99.97 per cent of small particles such as pollen, as well as absorbing odours, smoke, and VOCs. It's ideal for rooms up to 484 square feet and is small enough that it won't dominate your room, although the square design isn't as stylish as some of the options on this list. There's a touchscreen status window that shows the current air quality and allows you to cycle between settings.

The Xiaomi Mi Air Purifier 3H is compatible with both Alexa and Google Assistant, allowing you to control your air purifier with your voice. The real power lies in the Mi Home app, however. The app let you see information such as current air quality levels, filter status, as well as allowing you to change the modes. However, you can also use the app to create automations that can turn off the air purifier when the air quality reaches a specific level, for example. It can make your smart air purifier even smarter.

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