Features To Consider With Smart Air Purifiers


There are a range of different sized air purifiers, some that are box-shaped, whereas others are tower-like. Depending on where you are placing your air purifier, you will want to think about the size of the unit. Most air purifiers are designed with the home in mind and have a sleek look to suit many environments. If you are tight on space, you may want to consider air purifiers that can be wall-mounted, helping save space while giving you the best air quality.

Noise Level

Many people like to run their air purifiers at night, so the best air purifier will be one that either consistently runs quietly or has a quiet/sleep mode option that operates at less than 30 dB. At the highest setting, most air purifiers will run at about 50-60 dB, which is about the level of normal conversation. For those setting up their air purifiers in living areas or office spaces should also consider this noise level; most WiFi air purifiers will have smart features that allow you to set timers or schedules, so you can always have it run at a lower setting while you are around, and then switch to being more powerful when the room is no longer in use.


The best air purifiers come with apps that can be used from your smartphone to operate it. These apps generally have a far wider range of smart features that you cannot control from the device. If you want to be able to track the life of your HEPA filters, review cleaning history, monitor air quality levels and make adjustments to fan speeds and modes, having an air purifier that has an app is appealing to most people.



There are so many air purifiers on the market today, many of which enable Wi-Fi connectivity. This connectivity allows for the app to be used, however, some air purifiers can only work when connected to Wi-Fi, so it is important that you look into that if you do not wish to use an app. Wi-Fi connectivity allows you to connect your smart air purifier to your home connection, which can then be managed from your smartphone whether you are at home or away from it. Always check the connection required for Wi-Fi, as some models only support 2.4G.


The best smart air purifiers have a great filtration system comprised of several filters, but most importantly a HEPA filter and an activated charcoal filter to reduce the number of pollutants in the air such as VOCs, dust, allergens, pet dander and mold spores while deodorizing the air to keep it smelling fresh and clean. The pre-filter is another important filter to consider, as you will need to clean this, so one that is washable is ideal. A great feature that your smart air purifier may have that helps you keep on top of your filters is a filter replacement alert that will advise you when a new filter is required.

Air Quality Monitor

The best air purifiers use advanced sensors to monitor the air quality and will display this, typically with a color-coded system, either on the front of your air purifier or through the app. Some air purifiers feature a smart auto mode which will allow the unit to adjust its fan speed and settings to suit its surroundings; so, if you have just cooked and there is smoke in the air, or perhaps painted your nails, your purifier will detect a change in the air quality and will increase the fan speed to pull in the dirty air to be purified.

If you’re thinking about purchasing home gadgets specialized for air quality control check out our buying guide for best air quality monitors. For a device that can control air humidity in your home, take a look at our selection of humidifiers and dehumidifiers.


Room Size

Prior to making any purchasing decisions when it comes to smart purifiers, you must first consider the size of the room you are wanting to purify. Some of the best large room air purifiers cover many square feet, making them ideal for medium to large rooms. On the other hand, some air purifiers are smaller and are best for small offices or bedrooms. Always determine the size of your room first and check that against the specs of any of the air purifiers you are considering. Air purifiers that are placed in a room too large will struggle to clean the air will not be able to recycle the air as many times (if at all) as they advertise.


While the best air purifiers reduce the amount of dust in your home, you are likely to still have to do a bit of dusting every now and then. Maintenance of the air purifier itself is also required, as you will need to clean the pre-filter as well as replace the other filters when they have come to the end of their life. Depending on how often you use your purifier and the settings it is on, you are likely to have to change your filters anywhere between every six weeks to every six months.

Other Features

If you have curious children or pets that could accidentally adjust settings on your air purifier, it is ideal for the unit to have the option of a child lock, which will prevent any buttons from being able to be pressed. Many Wi-Fi enabled purifiers may also offer the option of being able to connect to one of your smart home devices such as Amazon Alexa or Google Home Assistant to use in conjunction with voice commands. Being able to set schedules and timers is also ideal as you can always stay on top of keeping your air clean, perfect for people who suffer from allergies and asthma.