(Last Updated On: August 4, 2023)

Company Review: Coway Air Purifiers

Coway Is An Award-Winning Company With Top-of-the-Line Air Purifiers.

bianca herron

By Bianca Herron

12 min read

The Coway air purifier company is committed to helping people create a path to a cleaner, healthier indoor air, and we can see that through its products. Their air purifiers are expertly designed, come with several smart features and filters, and can meet anyone’s needs on a budget. The award-winning company doesn’t sacrifice quality and provides a quality customer service team to help its customers through every step of the process. If you are looking for an air purifier for asthma, allergies, smoke, or odors, the Coway Airmega 400 product line features a HEPA filter and Advanced Max2 dual HEPA carbon filter, which cleans the room four times per hour. No matter what your needs are, Coway offers quality solutions at an affordable price.


Overall Rating


Features & Services


Customer Support & Reviews




Advanced Max2 dual HEPA Carbon filters

Energy Star Rated

Smart features

State-of-the-art HEPA air purifiers


One-year warranty

Key Takeaways

  • Award-winning air purifiers
  • Coway IoCare Mobile App
  • Coway R&D Center

Coway Air Purifier Products

The Coway Airmega line is Smart HEPA air purifiers designed to reduce harmful airborne pollutants and odors expertly. Coway’s state-of-the-art HEPA air purifiers feature Advanced Max2 dual HEPA carbon filters that clean your air up to four times an hour, as well as smart sensors that automatically adjust to your environment in real-time. Additionally, Coway equips all of its units with smart technology, and both the 300S and 400S are compatible with Amazon Alexa, Google Home, and WiFi.

Coway offers high-quality, innovative air purifiers that can meet your various needs. If you need an air purifier for a large room, the Airmega 400 covers up to 1,560 square feet. The Airmega AP-1512HHS is a best seller and perfect for small rooms up to 325 square feet. It doesn’t hurt either that it’s an affordable air purifier at $299.00.

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Products in this article are independently selected and featured editorially. If you make a purchase using these links we may earn commission.  Visit our How We Rate page to learn more.

About Coway Air Purifiers

For more than three decades, Coway has been obsessed with helping others live healthier: 

 When it comes to health, we believe every element needs to be examined, researched, understood, tested, and retested,” Coway says on its websiteSome may call this never-ending product and lifestyle interrogation excessive, but for us, its just another day of discovery. We believe the highest levels of health, comfort, and satisfaction dont happen by chance. We obsess over every detail, so Coway products can help transform your space into a health sanctuary. 

Today, Coway has earned a reputation in the industry for manufacturing some of the best air purifiers, water purifiers, and bidet toilet seats on the market. Coway is an award-winning company known for its design, innovation, and technology. Some of its awards include: 

  • CES Innovation Award 
  • Korea Brand Power Index 
  • iF Design Award 
  • Good Design 
  • Reddit 

Through the Coway Research and Development Center, an environmental technology research institute with more than 350 researchers, Coway develops and researches technologies that help people live healthier lives. This center also operates as the companys environmental quality, design, and cosmetics institute. Since its launch, the Coway R&D Center has more than 8,000 patents related to water and air, over 5,000 intellectual property, 23 WQA-Certified Water Specialists (CWS), and collected more than 380 billion data points from over 40,000 households to test air quality.  

Coway Air Purifier Quality

After reading through dozens of online customer reviews, we found that many Coway customers are happy with its products. Many customers expressed their appreciation for how well the products expertly clean the air and eliminate odors, while others praised their tranquility. Customers with not so favorable reviews, on the other hand, shared issues with units not working properly and the IOCare App.  

Features and Services

The features that Coway offers with its air purifiers include improved performance, health, and innovation. 

Energy Efficiency

Coway is committed to helping people create a path to cleaner, healthier indoor air through its products. They are expertly designed, energy star rated and come with a number of smart features and filters. Additionally, Coway has earned a reputation in the industry for manufacturing some of the best air purifiers. In fact, Coway has become an award-winning company known for its design, innovation, and technology. Some of its awards include the CES Innovation Award, Reddot and iF Design Award.  

Customer Support & Reviews

Coway is committed to providing its loyal customers with exceptional customer service. If you are experiencing any problems with your air purifier or filter, Coway has an informational FAQ page helpful. You can also contact the companys friendly customer service team via phone (800-285-0982) and email at [email protected]. Coway also encourages customers to utilize its Heart Service, a high-quality maintenance service provided by Coway Ladies. After contacting the Cowboys, Ladies, also known as Cody, will come to your home at a scheduled date and time and provide high-quality maintenance for your Coway products. Some of the care includes filter changes, exterior maintenance service, as well as a consultation on your health and wellness.  

 We read through dozens of customer service online reviews and found that Coway has received mainly positive reviews. Although Coway is not accredited with the Better Business Bureau (BBB), the company maintains an A+ rating on the business site with twelve complaints in the last three years. In most online reviews, including Amazon and the Butter Business Bureau, we found many Coway customers are happy with its products and customer service. Many customers expressed their appreciation for how well the products expertly clean the air and eliminate odors, while others praised their tranquility. On the other hand, customers with not-so-favorable reviews shared issues with units not working correctly, the IOCare App, and subpar customer service 

Costs for Coway Air Purifiers

You can expect to pay between $100 to $1000 for a good air purifier in today’s market.  Coway falls in the mid-range price with its products. Coway offers an extensive product line and variety in air purifiers, which means there’s an air purifier to meet anyones needs as well as their budgetThe Coway Airmega product line ranges from $189 to $749. If you cannot shell out the cash upfront, you can take advantage of easy monthly payment options during checkout on Coways website. All Coway air purifiers come with a 30-Day Back Money Guarantee, five-year limited warranty, and free shipping.

Filter Replacement Costs

Coways replacement filters cost between $25 and $130 each. However, it’s essential to keep the indoor air as healthy and clean as possible. This is why changing your filters as needed will not only ensure your Coway Airmega air purifier remains efficient but also keeps you and your family breathing healthy, cleaner air.  

Coway Warranty

All Coway Air purifiers come with a one-year warranty covering any internal and functional parts, except the filter. The Airmega AP-1512HHSAP-1512HH200MAP-1216L150, and the AP-0512NH come with three-year warranties. This warranty excludes the filter and covers the motor and electronic parts.  

 The five-year warranty covers the Airmega 400S, 400, 300S, and 300. It covers the engine and electronic components as well and does not include the filter.  

 If your motor or any electronic parts fail due to a defect in materials or workmanship during your warranty period, Coway will either repair or replace the product. After purchasing your unit, you must register your warranty, which you can do via CowayWarranty & Registration” page on its website. All you have to do is log into your account or signup if you dont have one. The warranty form is easy to fill out and should not require help filling it out.  

Returns and Shipping

Coway provides its customers with free shipping on orders anywhere in the United States and Puerto Rico. Coway does not offer international shipping and does not ship to P.O. Boxes, United States territories, or packaging forwarding services. All orders placed after close of business hours are processed and shipped the next business day.  

Additionally, Coways 30Day Money Back Guarantee allows you to return any product for free that youre not completely satisfied with it. To be eligible for a refund, you must meet the following conditions:  

  • Returned products must be in good physical condition in their original packaging or packaging that provides an equal degree of protection. Additionally, you must include any accessories provided with the product.  
  • You must request a Return Merchandise Authorization (RMA) from Coway customer service within 30 days, or 90 days for a Coway Bidetmega product, of your purchase date.  
  • You must keep your receipt because Coway may require you to show proof of purchase and video footage to receive an RMA. 
  • Coway must receive the returned product within 30 days after an approved RMA. The RMA will expire on the 31st day after being issued.  

Coway Helps You Stay Protected from Allergies, Viruses, and Smoke 

You or a loved one may be one of the more than 50 million Americans who suffer from allergies each yearSuffice it to say, you may have likely experienced some of the typical allergy symptoms like sneezing, coughing, itchy and watery eyes, and sinus inflammation. While some may experience mild allergy symptoms, others can have a severe reaction such as asthma attacks, hives, rashes, and more. Luckily, these air purifiers’ design to remove these harmful particles from the air can alleviate allergy symptoms.  

Whats more, you are more vulnerable to catching a common cold or flu if you already suffer from an allergy to dust, for example, and other airborne allergens. This is where an air purifier with a HEPA filter excel. HEPA filters expertly remove viruses, including the coronavirus and the flu, that spread through the air with similar airborne particle and droplet sizes. Air purifiers eliminate harmful bacteria, germs, and pollutants from the air that can quickly enter your respiratory system and lead to serious health issues. 

Coway‘s True HEPA filter capture and eliminate up to 99.97 percent of airborne pollutants as small as 0.3 microns. This includes pollen, mold spores, dust mites, pet dander, and more allergens. Coways air purifiers are also beneficial to those who live nearby wildfire areas or simply smoke and want to maintain the air quality in their smoking room. Every Coway Airmega unit features an Advanced Max2 dual HEPA carbon filter, which expertly cleans your space four times every hour. This filter also offers protection against allergies triggered by tobacco, odors, chemicals, and gases. 

Placement For Your Coway Air Purifier

Since air purifiers are designed for use in one room only, it can be challenging to decide where to place them. It is, however, easier to choose the right place when you know where air purifiers shouldnt goFor example, air purifiers cannot properly do their job in a corner, behind the television, and in other places that prevent it from effectively purifying your air.  

So, where should you place your new air purifier? According to LearnMetrics, your air purifier should be in places with the highest airflow. This includes doorways, walls, near windows, and more. Most importantly, your air purifier should be in the room where harmful airborne pollutants are the highest. For example, put it in the kitchen if you smell a constant odor from all cooking you do. If you have pet odor and pet dander in your living room from your furry friend, house it there. Or, perhaps, theres mold growing in your bathroom from all of the excess moisture and humidity.  

 If you still cant decide just yet, dont be alarmed. All room sizes-small, medium, and large — can benefit from cleaner air if the unit is the right size for the specific rooms coverage area. For example, the Coway Airmega 400 air purifier is best for extra-large rooms — including bedrooms and livings rooms — up to 1,560 square feet.  

Bottom Line

Regardless of the Coway air purifier you go with, you can be confident it will maintain and create a healthy living environment for you and your loved ones. Their HEPA filtration system captures 99.97 percent of airborne allergies. They have a wide range of filter options and affordable air purifiers for whatever you want to improve, from dust to smoke. 

Coway Customer Reviews:

Very Quiet!

We’ve owned the Airmega 400 for about two months. It sits in a room next to the kitchen and backyard sliding door. When strong kitchen odors are present, the Airmega turns into high gear automatically, and the light changes to red. I was opening a delivery package that was filthy and dusty about 10 feet away from the Airmega, and again it sensed the flying dust and kicked into high gear. Most of the time, it runs on the lowest setting and is super quiet. Very Quiet! We’ve noticed fewer dust and animal odors overall. Super easy to operate. It just operates itself, and it will let you know when to wash the large washable particle filter. So far, the HEPA is functioning at 100 percent efficiency. We love it! 

— Kristen D. via Amazon   

As for the air purifying itself, no complaints, it works great…

Let’s start with the bad: setup isn’t enjoyable. The IOCare app is buggy, and you’re going to have to run through it multiple times before you get it working. You’re also going to need a 2.4Ghz WiFi network set up in your home (the device doesn’t support 5Ghz). P.S. Don’t sign into IOCare with Google, instead use your email and create a password. Now, onto the smart: when it works, it’s pretty great. Seriously, I didn’t expect the smart features to be any more than a gimmick, but they’re pretty cool. You can turn it on or off for starters and change the fan speed using Google Assistant or Alexa. It works surprisingly well, and the commands are super simple. My favorite smart feature is the alerts: the IOCare app will send you to push notifications for poor air quality when the Coway detects a high particulate count. I often get these alerts when I’m cooking on the stovetop downstairs, and there’s smoke, so it works. As for the air purifying itself, no complaints, it works great, about the 5500-2 which I also own. It’s super quiet on its automatic setting. And it’s more stylish than the Winix, so it’s less likely to stick out among your decor. Sadly, it doesn’t have an automatic Sleep Mode when it gets dark like the Winix (a feature I like), but it does have a button to turn off the light, so it is not obtrusive in the dark (I keep it in my bedroom and it is barely noticeable). All in all, a worthwhile successor to the H.H. and worth the extra ~$50 assuming you get it set up correctly.   

— Kyle D. Airway AP-1512HHS review via Amazon  


The product does not work.

The product does not work. I purchased a Coway Airmega and another Coway product. They arrived, and I opened the boxes on Saturday. The smaller unit works fine; however, I could not get the larger unit to work. My daughter came over the next day and tried to get the Airmega 400 to work, and she was unsuccessful. In the literature, we noted that the company was closed on weekends. I called Monday and was advised to make a video of what happens when I plug the unit in. My daughter assisted me, and I submitted the video on 12/21/2020. [A Customer service representative] wrote in an email it looks like the unit will need replacement. I wrote the company requesting a refund or replacement of the product. I received the following statement in a reply email: “The management team has your case; they are working according to the order received.” [One week later] I called the company again and spoke to Teddy. I told him I have not heard from the company and I want a replacement or a refund. He told me the management team is working on it. I asked to speak to someone in authority; he said there was no one thereAt this point, I want a full refund for the unit that is not working. 

— Anonymous product/service complaint via Better Business Bureau  

What makes this one stand out is the easy-to-clean dust pre-filter and Charcoal secondary filter.

Many of the good quality filters are similar in many ways. What makes this one stand out is the easy-to-clean dust pre-filter and Charcoal secondary filter. The dust pre-filter is a fine screen-like material. The “Filter” light will come on when it starts to get blocked. A quick rinse with the garden hose and bam, done. Dry it off, reinstall it, and press the “reset filter” button – DONE. The charcoal filter is a honeycomb filled with high-quality activated charcoal pellets. This means it will last a long time removing smells (etc.). The automatic air quality sensing system is somewhat over-active on this unit. If left on automatic, I find it goes into HIGH at the drop of a hat. I leave it set to one of the manual speed settings. 

— Mr. Helpful Airmega AP-1512HHS review via Amazon