‘ZDNet Recommends’: What exactly does that mean?
ZDNet’s recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing.
When you click through from our site to a retailer and buy a product or service, we may earn affiliate commissions. This helps support our work, but does not affect what we cover or how, and it does not affect the price you pay. Neither ZDNet nor the author are compensated for these independent reviews. Indeed, we follow strict guidelines that ensure our editorial content is never influenced by advertisers.
ZDNet's editorial team writes on behalf of you, our reader. Our goal is to deliver the most accurate information and the most knowledgeable advice possible in order to help you make smarter buying decisions on tech gear and a wide array of products and services. Our editors thoroughly review and fact-check every article to ensure that our content meets the highest standards. If we have made an error or published misleading information, we will correct or clarify the article. If you see inaccuracies in our content, please report the mistake via this form.
What is the best air purifier? ZDNet's top choice is the Levoit Core 300 Air Purifier. We analyzed the size, filtration, and sound levels of some of the top air purifiers below.
Cynthia Paez Bowman is a finance, real estate and international business journalist. Besides ZDNet, her work has been featured in Business Jet Traveler, MSN, CheatSheet.
Allison Murray is a writer based in Chicago. She has three years of reporting experience on a wide variety of tech-related topics.
The best air purifiers can filter out chemicals, toxins, and particles that cause allergies and other health issues. Besides creating a cleaner environment, you may be able to get rid of unusual odors or even reduce the chances of respiratory issues like hay fever and asthma.
However, all air purifiers aren't created equally. This guide will walk you through how to choose one of the best air purifiers available now.
Specs: Three-phase filtration system | H13 True HEPA Filter captures airborne particles up to 0.3 microns in size | Removes 99.97% of dust, smoke, pollen and mold | Available in black or white | 8.7 x 8.7 x 16.25 inches and 7.48 pounds | Cycles air up to five times per hour in a room up to 219 square feet.
Levoit is one of the top-selling manufacturers of air purifiers, and the Core 300 is an excellent all-around option. This air purifier is smaller in size when compared to the large floor units on the market, but it can cycle the air in a room in as few as 12 minutes. The Core 300 works differently than many others, as it doesn't use UV-C light to destroy airborne particulates (the light can produce harmful ozone). Instead, the Core 300 cleans the air using a series of filters.
It captures airborne particles using a high-efficiency activated carbon filter, followed by a pre-filter, followed by a medical-grade H13 True HEPA filter capable of capturing tiny particles up to 0.3 microns that the other two may have missed. Smoke, pet dander, dust, pollen, and unwanted odors can finally be a thing of the past.
Specs: Four-stage filtration system | True HEPA filter | Washable pre-filter; eco mode | Pollution sensor | Timer | 16.81 x 9.57 x 18.31 inches and 12.35 pounds | For room sizes up to 361 square feet.
Coway's Airmega AP-1512HH Air Purifier is an award-winning model that's easy to understand and operate. The pollution sensor broadcasts your room's air quality using three colors: red for unhealthy, purple for moderate, and blue for good air quality.
As with the color-light system for air quality, the Airmega AP-1512HH has an indicator light that will flash when it's time to replace any of its filters. There are four filtration stages: pre-filter, room deodorizer, carbon, and HEPA. The deodorizer phase is not typically found in air filters, but this one is excellent for removing odors from mildew, pets, or cigarette smoke.
Specs: Multi-phase filtration includes true HEPA air filter as well as a UV-C light and a Titanium Dioxide layer to kill airborne viruses | 10.25 x 6.75 x 21.5 inches and 8.55 pounds | Cycles up to 743 square feet per hour.
Germ Guardian's AC4825E is powerful enough to deodorize, kill viruses, and filter airborne particles in rooms as large as 743 square feet. And the smaller the room, the more efficiently the purifier can work. While a room that's 743 square feet only cycles once per hour, you'll get three cycles per hour in a room that's 248 square feet.
What makes the AC4825E model unique is its ability to kill viruses as part of its multi-state purification. The HEPA filter captures 99.97% of allergens and fine dust; the charcoal filter eliminates odors; the UV-C light reduces airborne mold, bacteria, and viruses; and the Titanium Oxide treatment eliminates any surviving VOCs and viruses. This may be the most extensive purifying process on this list.
Specs: Four-state filtration includes a True HEPA filter and a washable AOC carbon filter | PlasmaWave technology | Smart sensors | 15 x 8.2 x 23.6 inches and 15.4 pounds | 27.8 decibels | Cycles up to 360 square feet per hour.
Winix's powerful floor model uses PlasmaWave technology instead of UV light to break down certain particulates. It's a safer way to eliminate chemical vapors, bacteria, and pollutants without producing ozone, which can irritate the lungs or make asthma and allergies worse.
The 5500-2's four phases include a washable mesh pre-filter and a washable carbon filter to get rid of odors from foods, smoke, and pets. Next is the True HEPA filter, which captures 99.97% of airborne particles. The final stage is the PlasmaWave technology that destroys any remaining pathogens.
Specs: Three-phase filtration | Nylon pre-filter | Carbon filter, and H13 True HEPA filter | 8.07 x 8.07 x 12.6 inches and 6.6 pound | 24db operation | Five times circulation per hour in rooms as large as 183 square feet.
Levoit's Core 200S features smart controls that can be activated using voice control or through their app. This allows you to do everything from setting a schedule to adjusting the fan's speed. The Core 200S's small size makes it portable enough to move around your home or to and from your office. In addition, the air purifier is extremely quiet and includes an integrated night light, making it a good option for a baby nursery or child's room.
Most effective in small rooms
Specs: Two-stage purification | Available in five colors | 8.5 x 3.3 x 2.7 inches and 0.6 pounds | Rechargeable lithium-Ion battery with up to 12 hours of operation per charge | Cycles up to 54 square feet per hour.
The PureZone Mini is a "small and mighty" air purifier that's easy to carry with you throughout your day. It features an integrated upper handle to hook anywhere, making it easily portable.
You can charge the device using the included USB cable for up to 12 hours of operation per charge. Although the purifier is small, it features a powerful HEPA filter that can capture particles as small as 0.3 microns. As a bonus, the PureZone Mini comes in five colors: black, white, blue, starlight blue, and blush.
Limited to purifying 54 square feet per hour
The best air purifier is the Levoit Core 300 air purifier since it can cycle the air in a room in as few as 12 minutes, and is super quiet so you can use it at night while you sleep. It's compact size is also a plus, but even though it is small, it still has a powerful three-phase filtration system.
An important consideration for air purifiers is filter replacement: some models require regular replacements of expensive filters, which could end up costing you hundreds of dollars per year. Before you purchase a model, look into what type of replacement filters you'll need, how much they cost, and if you can afford to replace them as required. Otherwise, choosing not to replace filters as recommended could reduce the air purifier's efficiency.
In addition, sound can be an important factor. If you plan on running an air purifier in a bedroom, one with variable fan speeds and a low-decibel sleep mode can make it more comfortable to operate at all hours.
An air purifier that can kill viruses
A compact option to purify air
A portable air purifier to bring anywhere
To choose the best air purifiers from the hundreds on the market, we looked at several important factors. CADR is an important factor, since it determines how many times an air purifier can purify the room's air in one hour. Some air purifiers are designed for larger rooms, while others work most efficiently in small spaces. Typically, the larger the air purifier, the wider the coverage in square feet. This guide aims to provide a range of air purifiers for varying needs, so we made sure to review purifiers for different room sizes.
Besides size and CADR, HEPA filtration was an important deciding factor. Short for high efficiency particulate air filter, it can remove airborne particles as small as 0.3 microns. This covers 99.97% of the particles found in the air including pollen, mold, dust and bacteria.
Other factors we took into account include design, price, and customer reviews. The six air purifiers above were among Amazon's best sellers and boast high ratings from a large number of customers.
While air purifiers cannot get rid of all the dust in the air, with frequent use, they can reduce the dust in your home and you'll notice you have to dust less.
When shopping for an air purifier, you'll need to decide what area you'll want to use it in. There isn't a plug-in air purifier that can clean the air inside an entire household; it's best to isolate areas, such as a bedroom, kitchen, or living room. Once you know the size of the room you're working with, you can select an air purifier capable of efficiently circulating and cleaning the room's air. A tabletop model is best for small spaces like a nursery or bathroom. A floor model can handle larger areas and is still portable enough to be moved from one room to another.
A HEPA air filter is short for high efficiency particulate air. It's the finest type of filtration, able to capture particles as small as 0.3 microns. This includes bacteria, mold spores, pollen, dust, and nearly 99.97% of airborne particles.
All air purifiers will require the filters to be regularly changed. After all, they are capturing and trapping harmful particles, such as mold spores and bacteria. Some air purifiers feature washable filters, which make it easier to maintain. However, the most effective air purifiers include HEPA filtration and carbon filters, which need to be replaced. You can find the manufacturer's requirements in the manual.
When using some modern purifiers, they often have an indicator light that warns you when it's time to replace the filters. As a rule of thumb, plan on replacing carbon air filters every three months and other filters every six months.
To determine the best air purifier based on the size of the room or area you're hoping to clean, look at a purifier's Clean Air Delivery Rate, or CADR. Most purifiers will list the rate they circulate the entire volume of the room per hour by square footage.
Here are a few other options to look into:
The 4 best iPad models: iPad, Air, Pro, and Mini compared
The 6 best live TV streaming services: Cut the cord
The 5 best toasters: Even toasters have touchscreens now
The 7 best tablets: Ditch the laptop
The 5 best treadmills: Perfect your home gym
The 5 best weather apps: Check the forecast
The 5 best meditation apps: Make time for zen
The 5 best budget TVs: Awesome entertainment for less
The 5 best gaming desks: Level-up your tabletop
Please review our terms of service to complete your newsletter subscription.
You agree to receive updates, promotions, and alerts from ZDNet.com. You may unsubscribe at any time. By joining ZDNet, you agree to our Terms of Use and Privacy Policy.
You agree to receive updates, promotions, and alerts from ZDNet.com. You may unsubscribe at any time. By signing up, you agree to receive the selected newsletter(s) which you may unsubscribe from at any time. You also agree to the Terms of Use and acknowledge the data collection and usage practices outlined in our Privacy Policy.
© 2022 ZDNET, A RED VENTURES COMPANY. ALL RIGHTS RESERVED. Privacy Policy | Cookie Settings | Advertise | Terms of Use