5 Best Air Purifiers To Buy In 2021

Let’s face it, in busy cities pollution can be a real problem. This is mainly because of the large population and all of the vehicles emitting carbon dioxide. Of course, there are a lot of other factors at play here. But it doesn’t matter whether you live in the city or in the countryside, fresh and clean air is quite important for everyday life. People tend to overlook this, and only notice it when the situation becomes worse.

If you don’t want to be that person, being around clean air is quite important. You want to avoid dust particles, smoke particles, mold, spores, and the like. Having an air purifier will ease this pain. You’ll start to notice the difference once you start using it. But there is a lot of confusion out there as to which air purifier you need for your room/home. Well, we’ve tried to make that problem a bit easier for you.

If you want to freshen up your space and get a clean experience, these are the best air purifiers to do so. Enough talk, let’s get to freshen up your home with the five best air purifiers in 2021. Hopefully, you’ll find something that works for you on this list.

1. Coway AIRMEGA 400S (AP-2015E/G) Smart Air Purifier

Best Overall


  • Excellent performance
  • Can accommodate large spaces
  • Works with Amazon Alexa
  • Helpful LED indicator
  • Near silent operation


  • Quite pricey

1,005 Reviews

Room Size: 1560 sq. ft | Dimensions: L14.8 x W14.8 x H22.8 inches | Weight: 24.7 Pounds

Coway takes the first spot on our list thanks to their Airmega 400S (AP-2015E/G). This is a smart air purifier that also happens to be compatible with Amazon Alexa. It costs a pretty penny, but people want something that’s safe and something that actually works. This is exactly what the Airmega 400S represents. If you can look past the price, this is an excellent air purifier.

This excellent air purifier works in the larger rooms easily. It can accommodate rooms of up to 1,560 square feet in size. It’s the perfect solution for a large living room or entrance hall. This device cleans the air two times per hour, and Coway recommends you do so. It’s a rather large device, so make sure that you have the space for it.

As for the filters, this uses an Airmega Max 2 filter. This filter technology uses activated carbon and combines that with a true HEPA filter. It captures and reduces 99.97% of 0.3-micron particles in the air. This includes pollen, pollutants, and other allergens. Apart from that, it reduces organic compounds and fumes like NH3 in the air. These filters are washable, but there’s also a permanent pre-filter that catches larger particles.

The LED ring at the front lets you know how clean or dirty your indoor air is. It has five fan modes which include Smart, Sleep, Low, Medium, and High modes. The noise level is also quite silent. This smart purifier is controllable through Amazon Alexa as well. It’s a great addition to a smart autonomous home.

2. Honeywell HPA300 Air Purifier

The Popular Choice


  • Excellent purification efficiency
  • Covers large rooms
  • Safe and reliable
  • Doesn't get loud


  • Big and clunky
  • Unappealing design

13,828 Reviews

Room Size: 465 sq. ft | Dimensions: L9.25 x W20 x H22.25 inches | Weight: 21 pounds

Next on our list is a very popular air purifier from Honeywell. The Honeywell HPA300 is a true HEPA Air Purifier. This one is perfect for extra-large rooms and comes in a plain black color. Honestly, this one is a very popular choice. For that alone, it was an easy pick for the spot on our list. It’s a bit expensive, but it covers a large space and does the job well. Let’s see what else it has to offer.

While the black color is not noticeable, you’ll notice the clunky design for sure. Make sure you have space where it isn’t visible easily, as it does look a bit unappealing at times. It also weighs a hefty 21 pounds, which is quite frankly a bit too much. While the aesthetic isn’t the best, it gets the job done quite well. It’s also quite safe so you don’t need to worry if you have kids around in your home.

This air purifier is great for large rooms. It is recommended for use with rooms that have a size of about 465 square feet. That’s more than enough for most living rooms or the bigger rooms in the house. It captures a lot of the airborne particles that are as small a 0.3 microns. It does an effective job of cleaning the air and circulating it. Fortunately, this air purifier does this 5 times an hour. Overall, this is a great choice if you can look past the design.

3. Coway AP-1512HH Mighty Air Purifier

Best Overall Value


  • Minimalistic design
  • Great overall value
  • Four stage filtration system
  • Bright colored LED


  • Extra large rooms won't work
  • Quality control issues

13,556 Reviews

Room Size: 361 sq. ft | Dimensions: L16.81 x W9.57 x H18.1 inches | Weight: 12.3 pounds

Coway earns another spot on our list thanks to their AP-1512HH model. They call this the Mighty Air Purifier, and it does have a lot of extra features. Considering all the other options on this, it is actually the best value for most houses. It also holds up quite well in terms of durability and long-term use.

This Mighty Air Purifier has a true HEPA and Eco Mode. It comes in two color options: Black and Silver. It can accommodate room sizes of up to 361 square feet. While that is quite modest, it should get the job done for most rooms in the average household. It also happens to have a CADR rating. The four-stage filtration systems have a pre-filter, deodorization filter, True HEPA filter, and a vital ion.

This air purifier has a bright colored LED that lets you know how clean or how dirty the air is inside your home. It has three fan speed that has to be set up manually. The auto mode automatically optimizes the speed based on indoor air quality. When the air is clean, the fan will go into ECO mode and stop spinning. This saves a lot of energy in the long run. Overall, it works quite well.

While this air purifier is a great option to consider, you’ll have to look elsewhere if you have a larger room. There have also been reports of quality control issues. However, when it works, it hard not to recommend.

4. Blueair Blue Pure 411

Great for small spaces


  • Very affordable
  • Perfect for a home office
  • Intuitive and easy to use


  • Lacks any bells and whistles
  • Gets loud for its size

8,875 Reviews

Room Size: 161 sq. ft | Dimensions: 8 Lx W8 x H16.7 inches | Weight: 3.35 pounds

The Blueair Blue Pure 411 lands itself on the fourth spot on our list. This is an excellent air purifier for smaller rooms. It is simple, straightforward, and has a smart design. Overall, it’s great value for small or even some mid-sized rooms. Get this if you don’t want to overspend and want to quickly freshen a space like your home office.
This air purifier has different prefilter sleeves for the exterior of the device.

These colored sleeves give a lot of personality to what’s basically a simple air purifier. It’s also easy to use thanks to its single-button interface. The entire product is lightweight and works well. It works well for rooms with a size of 161 square feet. Apart from that, the three-part air filtration system captures 99 percent of airborne pollutants.

It has an activated carbon filter which also removes orders caused by smoke, cooking, and other activities. The pre-filter is washable and easy to remove. One downside is that it can get loud for its size. While it’s not frustratingly so, it is audible. If you’re sensitive to this stuff, it could bother you. Apart from that, this is a great air cooler. It just lacks a few bells and whistles like timer buttons.

5. Dyson Pure Cool TP04

Best Design


  • Incredibly minimal design
  • Wireless functionality
  • Fits into any living room


  • Very expensive
  • Competitors perform better for less
  • Large in size

662 Reviews

Room Size: 290 sq. ft | Dimensions: L8.77 x W8.77 . H41.49 inches | Weight: 10.89 pounds

The Dyson Pure Cool is by far the most futuristic-looking air purifier on this list. It gets a lot of points for that alone. It looks like something you would see in a futuristic dystopian world. If you’re a fan of the design, this might fit right into your home. It has that minimal look to it that people really love. However, it is going to cost you a lot than you might expect.

This is the latest air purifier from Dyson, a company known for its outlandish designs. The Dyson purifying fan is no different. Well, cooling it a fan doesn’t make a lot of sense. This is because it has no visible blades. This white elongated shape juts out from the metal body and looks incredible.

It connects to your Wi-Fi and gives real-time reports to the Dyson link app. You can also control the purifier remotely from the app. It automatically senses and reports air quality on the LCD display. It uses a HEPA filter but doesn’t have a CADR rating. This isn’t a big deal, as this does the job quite well. Unfortunately, that’s not enough for a purifier that is priced this high.

Competitors tend to perform better and do so while being much cheaper. For most people, the price is going to be a big concern. But, if you are entirely sold on the design, then it’s not the worst option in the world, that’s for sure.

Alyssa Arford
Alyssa Arford is an aspiring Electrical & Electronics Engineer with a vested interest in the innovation and design of computer hardware. Her passion for understanding the nitty gritty of how hardware components come together and playing around with the potential of silicon devices puts her in a position to confidently discuss emerging technologies and their implications in advanced computing.