Best air purifier: the best fans and purifiers for cleaner air in your home

Our ranking of the very best air purifiers to eliminate irritants, pollution and dust from your environment

best air purifier: Mila Air Purifier
(Image credit: Mila)

It's understandable that most of us are in a place where we want to know more about the air that we breathe, and what it contains. Nowhere is it more important to take care of what we're putting into our bodies that at home.

Although pollution, dust, pet dander, allergens and germs are an unfortunate part of everyday life, the best air purifiers promise to reduce the amount of unwanted pollutants that linger in the air around us.

They do this by filtering the air in a space, often through several layers of filtration, and pushing out cleaner, less harmful air. This translate into anything from less dust, to pet hair and smoke being eliminated from the environment.

In an effort to help you to choose the best air purifier for your home, we've looked at some of the leading products that are available right now. And, if you're looking to invest even further in the air quality of your home, take a look at our rundown of the best dehumidifiers.

Whether you're looking for a stylish purifier that will blend in with your carefully chosen décor, or a machine quiet enough for the bedroom, we've got an example in our ranking below. Scroll down to see what we thought.

 The best air purifiers 2021

best air purifier: Dyson HP04 Pure Hot + CoolH&G gold badge

(Image credit: Dyson)

1. Dyson HP04 Pure Hot + Cool

Best home air purifier

Area size: 800 sq ft
Filter: HEPA
Dimensions: 30.1 x 9.7 x 9.7in
Weight: 12.4lbs
Reasons to buy
+Timers and smart home compatibility+Also works as a heater and fan+Good air quality data on app+10 speeds settings
Reasons to avoid
-Futuristic design that won't be to everyone's taste
What is a HEPA filter?

Dyson Hot + Cool placed beside baby sleeping in crib

(Image credit: Dyson)

HEPA refers to a type of filter found in most modern air purifiers that remove at least 99.97% of tiny particles in the air. The letters refer to ‘high-efficient particulate air’ and it’s widely understood to be the best option when it comes to air purifiers. Many products, including several on our list, use a combination of HEPA and activated carbon filters, adding to their effectiveness.

When you think of air purifiers, it's possible that the iconic design of the Dyson Hot + Cool range is what first comes to mind. Carving out a significant space in the clean air arena, the HP04 Hot + Air Purifier is still our favorite and ticks all of the boxes despite increased competition from other brands.

The purifier is fantastic if you already have a smart home, allowing you control it with Alexa voice commands, or you can use the app and remote control provided to set the fan speed, switch to night mode, set timers and so much more. As well as working to clear dust and pollutants from your environment, it's also a cooling fan and heater so is an indispensable tool all year round.

The small display on the front shows you in-the-moment data about any nasties in the air, or you can really dig into the numbers via the app. The only potential problem is the design, which is a little cold for some people, but if you can get past that you'll get a machine that works hard to deliver a more pleasant place to live in.

Homes & Gardens rating: 5 out of 5 stars

best air purifier: Mila Smart Air PurifierH&G gold badge

(Image credit: Mila)

2. Mila Air Purifier

Best air purifier for air quality monitoring

Area Size: 1000 sqft
Filter: HEPA
Dimensions: 18.5 x 14.7 x 14.7in
Weight: 17.9lbs
Reasons to buy
+Detailed and comprehensive air quality information+Nice, modern design+Easy to use app
Reasons to avoid
-Large and a little awkward to place-Amount of information may overwhelm beginners

A relative newcomer to the air purification space, Mila has entered strong with it's Smart Air Purifier. Packed with more features than you could wish for and packaged in a modern, Scandi-style rectangular unit, it works as hard at informing you about the quality of your indoor air as it does cleaning it.

The app is the star of the show, with gorgeous graphics that make cleaning the air a fun activity rather than a chore. Settings also allow you to change performance depending on whether you live in an old or new building.

The product is quite large, but it's wooden legs and white casing mean it will look smart and stylish in most spaces. 

Our only criticism we had is how overwhelming the purifier can be over time, picking up the smallest change in air quality and making it seem at times like you're waging war against pollutants. That could be a positive for many people, however, and in no way diminishes how impressive it is.

Homes and Gardens rating: 4.5 out of 5 stars

best air purifier: Blueair Classic 605

(Image credit: Blueair)

3. Blueair Classic 605

Best eco-friendly air purifier

Area Size: 775 sqft
Noise: 33-62dBs
Power: 15-100W
Filter: HEPA
Speed settings: 3
Dimensions: D13.3 x W19.6 x H25.9in
Weight: 30.8lbs
Reasons to buy
+Large area size covered+Quiet on lowest settings+Eco-friendly power consumption+Works with Amazon Alexa
Reasons to avoid
-Large and slightly industrial looking-No carbon filter

Blueair's largest air purifier is capable of cleaning rooms up to 775 square feet, which is only slightly less than our top place machine, and it impresses in other ways too. There's its HEPASilent tech keeping things quiet, the promise to remove 99.97% of allergy and asthma triggers, and its impressive low energy use.

It comes recommended for those who want to clean the air in large spaces, and it also benefits from compatibility with Amazon Alexa smart devices so you can operate it using just your voice.

It's biggest problem is how it looks, which makes it difficult to fit into a carefully designed living space. The purifier has been around for a while and has stuck around because of its impressive performance, but the metal grate on the sides and wheels at the base (which admittedly do make it easy to move around) aren't the most aesthetically pleasing.

best air purifier: Dyson Pure Cool MeH&G silver badge

(Image credit: Dyson)

4. Dyson Pure Cool Me

Best tabletop air purifier

Power: 40W
Filter: HEPA, Carbon
Dimensions: H15.7 x W9.6 x D9.6in
Weight: 5lbs
Reasons to buy
+Lightweight+Low energy consumption+Stylish+Night mode
Reasons to avoid
-Precise airflow doesn't cover large areas

You can’t go too far wrong with a Dyson product, and the Pure Cool Me Personal Fan is our choice for the brand’s best air purifier. Designed for desks, bedside tables or other surfaces such as sideboards, it has a slick, slightly futuristic look coupled with a filtration system that works hard to clean the air in your home.

Not just a purifier, the Dyson Pure Cool Me is also a fan that, despite not being powerful enough to cover large areas, would be perfect for individual use.

To adjust the fan, you simply need to move the position of the dome on top, directing airflow at the desired angle. Perfect for curling up with a book in the warmer months, or for sleeping if you don’t want to turn the air conditioning on.

Homes and Gardens rating: 4 out of 5 stars

best air purifier: Levoit Core 300H&G silver badge

(Image credit: Levoit)

5. Levoit Core 300

Best air purifier under $100

Area size: 430 sqft
Noise: 24-50dB
Power: 33W
Filter: HEPA, Carbon
Speed settings: 3
Dimensions: H14.1 x W8.6in
Weight: 9.2lbs
Reasons to buy
+Quiet on lowest settings+Low power consumption+Timer+Sleep mode
Reasons to avoid
-May not perform well in larger spaces

The lowest-cost option on our list, the Levoit Core 300 is a great option for those who are conscious about how much power a traditional air purifier may consume.

The Core 300 allows you to have more control over how you use it, with four different timer settings. With 2H, 4H, 6H and 8H options, you can choose how long you want the machine to run without needing to physically switch it off. Ideal for putting in the kitchen to eliminate food odours after cooking.

Small and compact with a nice design, it’s also capable of being tucked away in any room without sticking out too much, and light enough to be moved from room to room if you desire.

Homes and Gardens rating: 4 out of 5 stars

Dyson Hot + Cool air purifier in living area

(Image credit: Dyson)

How noisy are air purifiers?

This depends on the model you choose, but it’s obviously a big selling point for air purifiers to be at least quiet enough to sleep to. The products on our list range from a whisper-quiet 24dB to a rather noisy 52dB but it’s worth noting that many in the lower range refer to when an air purifier is in its lowest, and least powerful, mode.

Are ozone purifiers safe to use?

While we have not included any ozone air purifiers on our list, you may be wondering whether these types of filtration systems are safe to use in the home. Generally speaking, purifiers that add levels of this gas - or smog - to the air should not be used as they could impact long-term health. As this is a concern for many consumers, product information usually states that a purifier is ‘ozone free’, but it’s best to double-check if you are concerned.