The best air purifiers you can buy in 2026

An air purifier is just a fan and a filter. But not all fans are created equal, and filters come in all shapes and sizes.

So whether you’re looking for an air purifier to tackle odors before they escape your kitchen, or you’re trying to get rid of dust in your bedroom before your allergies get triggered at night, there will be a specific combination of a fan and a filter that will make the most sense for you.

But you need to be careful with what you buy… Because some of the models influencers seem to love (and even those endorsed by well-known newspapers and magazines) might be tricking you into overpaying for an air purifier that is just not worth it.

Since 2020, I’ve bought and tested 147 air purifiers (and counting!) to separate the good units from the absolute scams. You can read more about our testing methodology here.

In this guide, I will cut through all the marketing noise to tell you which are the best air purifiers on the market right now, based on hundreds of tests conducted in the same space over a period of six years.

Don’t buy an air purifier before watching this

These are our picks for the best air purifiers we have tested available to buy right now.

2. Best value for money: AirFanta 3Pro

If you care about one thing — maximum air cleaning at the minimum price — the 3Pro is untouchable.

The AirFanta 3Pro is a PC fan-powered air purifier that broke the mold. Based on our tests, we estimate a PM1 CADR of 353 cfm, which is incredible considering its low price of $159.99. This makes the 3Pro capable of providing five air changes per hour in rooms up to 49 m2 (529 sq. ft.).

READ MY FULL REVIEW ➜

WATCH MY VIDEO REVIEW ➜

3. Best for small spaces: Coway Airmega 100

A small cylindrical air purifier with an onboard sensor and a nightlight mode that is powerful enough to clean the air in rooms smaller than 21 m2 (or 222 sq. ft.).

Amazon is full of small air purifiers that cost next to nothing. But unfortunately, the vast majority of them are too underpowered to make a meaningful difference to your air. After testing nearly 40 small air purifiers, my top pick right now is the Coway Airmega 100.

READ MY FULL REVIEW ➜

WATCH MY VIDEO REVIEW ➜

4. Best for large spaces: Coway Airmega ProX

The ProX offers an impressive PM1 CADR of 462 cfm, smart modes, and an accurate air quality sensor for just over $800.

The Airmega ProX from Coway is a large, powerful air purifier that can offer five air changes per hour in spaces up to 64 m2 (or 693 sq. ft.). Running at top speed, it generates 53.6 dBA and has an estimated PM1 CADR of 462 cfm.

READ MY FULL REVIEW ➜

WATCH MY VIDEO REVIEW ➜

5. Best for smoke and odors: AC Infinity CLOUDLINE S8 fan with refillable carbon filter

If odors are your primary focus, my top pick is the AC Infinity CLOUDLINE S8 fan and one of their 8-inch refillable carbon filters.

To remove serious odors and gases from your air, you need to look beyond the standard air purifiers, as they usually come with a small amount of carbon that will become saturated quickly in spaces with high levels of VOCs. My top recommendation is to build yourself your own odor-busting device using parts from AC Infinity.

6. Best portable air purifier: CleanAirKits Triple Exhalaron

A PC fan-powered air purifier with a CADR of 131 cfm that you can use on the go or inside your car with a USB-C power bank.

After testing multiple portable air purifiers, I’m confident that the Triple Exhalaron is the only one you can use on the go with a battery pack that will provide enough clean air to make it useful.

WATCH MY VIDEO REVIEW ➜

7. Best commercial air purifier: Smart Air Blast

A large, powerful, quiet, no-nonsense air purifier with a massive fan and filter that can effectively clean the air in large classrooms, offices, and other high-traffic areas.

With an estimated PM1 CADR of 547 cfm, the Blast from Smart Air can provide five air changes per hour in rooms as large as 76 m2 (820 sq. ft.). But what’s incredible about it is that this power doesn’t come with a super loud noise attached to it.

WATCH OUR VIDEO REVIEW ➜

8. Best you can build yourself: Corsi–Rosenthal Box

A DIY approach to air purifiers that democratizes indoor air cleaning, using materials easily available.

You can build a Corsi–Rosenthal Box (or CR Box for short) at home with a standard box fan, four MERV-13 HVAC filters, duct tape, and a cardboard base, making it the best low-cost option for those who need a swift air purifying solution due to wildfire smoke or an unexpected air quality issue.

READ MY FULL REVIEW ➜

Special mentions

The good-performing air purifiers that didn’t make the cut, but that could be a good choice for you.

Since 2020, we have tested nearly 150 different air purifier models and, along the way, we have found some incredible units. That is why I thought it could be useful to give a shoutout to other excellent air purifiers in case they are available in countries where my top picks are not.

➜ Winix 5510 / Winix 5530 / Winix 5520

➜ Blueair Signature Large

You can explore our full leaderboard here:

Other models that we tested but don’t recommend

These are the popular models that other reviewers often recommend, along with what our tests show.

• Okaysou AirMax 10L Pro – This device became a best-seller on Amazon thanks to a successful influencer campaign on TikTok. In our testing, it failed to match the hype or price point. We found that Okaysou used marketing tricks to inflate its performance. I would avoid any Okaysou device. Update 26 June 2024: Okaysou is now bankrupt, and you can no longer buy it and their 5-year warranty is now worthless.

• Molekule Air Mini+ – Molekule has been touting its new PECO technology, but has had to remove many of its previous marketing messages due to misleading advertising claims and class action lawsuits resulting from underperformance. In our test, it was very poor at removing PM1 particles and emitted 86 dB at its highest fan speed – – louder than a leafblower! If this device is recommended in 2025, it’s likely due to the high commission for the publisher recommending it, as they start at $349 and go up to $999 with the Pro series.

• Rainbow RainMate – This is an old device that is still touted as being able to clean the air. However, it was the worst-performing device in our tests, making me think that water air-cleaning is totally useless in even the smallest of home rooms. Don’t rely on this device to clean your air; stick to a good old mechanical filtration.

• PuroAir 240 – Previously sold under the name ‘PuroAir HEPA 14 240’, the PuroAir 240 didn’t live up to the marketing spiel. After completing all our tests, we found that this air purifier has poor air cleaning performance for its price and is too underpowered to clean spaces of up to 1,100 sq. ft., which is something that is mentioned multiple times in the marketing materials and on PuroAir’s website.

• Jaspr – This large air purifier has a high CADR of 353 cfm but I don’t recommend it because it costs nearly $1,200 to buy and you can expect to pay an additional $704.36 per year in electricity bills and filter replacements. This means that you will spend just over $1900 in the first year of ownership – – the highest year-1 cost I’ve ever seen.

• Shark NeverChange HP152 – I liked the innovative pre-filter design for this cylindrical device, the low running costs and the use of a laser particle sensor. Those are all nice features, but unfortunately, the CADR is too low for the price, both at top speed (88 cfm) and at sub-45 dBA fan speeds (52 cfm).

What to look for when buying an air purifier 

The basic things you need to consider to make sure you’re not being duped into buying a device that won’t help.

The qualities you should look for in an air purifier will differ if you want to reduce allergy triggers at home, live near a busy road, need to improve your air quality during wildfire season, or deal with pet odors and dander. However, some things will always be important.

1. The size of the room and the CADR (clean air delivery rate) of the air purifier. 

It’s vital to analyze these two aspects together, considering many brands overstate the cleaning performance of their units. It’s not necessarily unfunded, but there’s a catch.

According to the EPA, for an air purifier to be truly effective, it should be able to perform 4.8 air changes per hour (or ACH) in a room. Unfortunately, some brands will advertise the room size coverage to achieve just one ACH, being able to claim a somewhat opaque wider coverage.  

The rule is simple: a higher CADR (stated in CFM, or cubic feet per meter) means greater cleaning power. Instead of focusing on room sizes recommended by the manufacturer, look at the CADR rating.

The best way to go about it is to figure out how powerful an air purifier needs to be for your space’s specific dimensions. You can use our calculator to do just that:

2. The filtration system

Pure mechanical purifiers stand their ground on efficiency and safety when it comes to air filtration. The most comprehensive systems feature three stages:

• A pre-filter to trap larger particles that would otherwise clog the main filter faster. The best units feature a removable pre-filter, making it easier to vacuum, rinse and keep in top shape. But you may find the pre-filter attached to the main one in budget air purifiers. It’s better than not having one, but it’s also harder to clean. 

• An activated carbon filter to adsorb gasses and smells. If you need an air purifier to deal with mold spores, for example, an activated carbon filter won’t be absolutely necessary, as spores are not gases but particles.
  
  But if you are after a device to help you reduce unwanted smells or deal with chemicals and VOCs, then an activated carbon filter will be able to do what particle filters (like HEPA or MERV 13) cannot.

• Lastly, the main particle filter will remove microscopic particles from the airstream. HEPA-grade filters can remove at least 99.97% of particulate matter as small as 0.3 microns.
  
  Yet, a denser filter just for the sake of it – like with PuroAir’s HEPA 14 – is not necessarily equivalent to a better performance. On the contrary, it’s important to balance fan power and filter thickness. If a filter is too dense and the air purifier is not potent enough to draw a good amount of air and pass it through, the cleaning power is reduced. It takes longer to remove airborne pollutants with restricted airflow.

3. Noise output

The fan that powers your air purifier can generate a lot of noise, and you are unlikely to want to use your unit regularly if this noise becomes too much. That is why it’s worth factoring in how noisy the unit will be, especially when running at its top fan speed. This is particularly important if you want an air purifier for the bedroom or your home office. 

Two things to consider:

• Smaller units won’t make much of a difference to the air when running at the slowest fan speed, and they tend to be noisier than larger ones at top speed. 

• Some air purifiers suited for big spaces can be whisper-quiet when running at their lowest fan speeds, so it is worth going bigger to get a unit that will run quieter.

4. Long-term costs

In addition to the upfront cost of buying an air purifier, you should also consider associated maintenance costs such as energy usage and filter replacement.

Running your air purifier 24/7 2ill substantially improve your air, but that also means an appliance adding to your electricity bill all day, year-round. The good news is that many energy-efficient units out there won’t significantly affect your monthly expenses. However, make sure to check this to avoid unpleasant surprises, as some units are on the power-hungry side.

A few things to consider in terms of filters:

• Filter replacement costs vary among brands and models – – and so does the required replacement frequency. 
• The longer a unit has been on the market, the more probable good-quality generic filters will be available. 
• More and more brands are offering convenient filter subscriptions that are cost-effective and include perks for happier customers.

5. Extra features

An extensive control panel with smart functions, app support, onboard air quality sensors or remote controls are handy perks that can make life easier. A no-lights mode for the bedroom, for example, is definitely something worth considering. 

However, if asked, I would recommend not to sacrifice CADR or performance over fancier tech-y bonuses. After all, the purpose of an air purifier is to clean the air.

How we test air purifiers

Saying we tested over 110 air purifiers in the last five years sounds great, doesn’t it? But what does testing mean for HouseFresh?

It’s definitely not just getting the units out of their boxes to take some cool editorial pictures for our articles. On the contrary, it is a thorough process that involves reliable testing devices to cover the many aspects of air purifier evaluation.

Air cleaning performance is key, for sure. But we go further. When you decide to invest in an air purifier that will be constantly running at home, things like long-term costs and noise output are also important in a real-world context. 

Our testing process includes the following steps: 

Step 1. We conduct a particle removal test

Step 2. We measure sound levels generated

Step 3. We measure electricity consumption

Step 4. We estimate yearly maintenance costs

Step 5. Real-life experience

All four steps comprise the core performance evaluation we run on every unit. We know the data is solid. However, there’s something about everyday use that cannot be measured in a lab-test situation. That is why our “final step” is using the air purifier regularly at home in an ordinary context. You can learn a lot by just living with a device.

Wrapping up

Air pollution is real. Over one-third of Americans still live in areas with unhealthy air and suffer from the consequences to their health. Improving our indoor air shouldn’t be something to take lightly. 

Considering how a high-performing air purifier can improve people’s daily lives, it’s somewhat infuriating to find the internet flooded with unfounded reviews of air purifiers that lack the research and data to back them up.

Our goal at HouseFresh is to help consumers find the right air purifier to fit their needs and budgets in real-life situations. We don’t take free units from manufacturers and are not afraid to raise our voices when a hyped unit turns out to be a disappointment. Most importantly, we are driven by a transparent, hands-on approach and constantly improving methods of real-life testing. 

We want our readers to find actual, helpful solutions. We may not always address all of your doubts in our articles. That’s why my mailbox is always open: danny@housefresh.com