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COWAY Air Purifiers for Large Room Whole Home Up to 4,253ft², 2 Sets of XL Washable Pre-Filters and HEPA Filters for Dual Purification, AQI, Turbo Mode, Timer, Wheels, 5yr Warranty, ProX(B)

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Availability: In Stock.
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Arrives May 31 – Jun 1
Order within 7 hours and 31 minutes
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Style: ProX Beige


Features

  • [Coverage] Boasts maximum strength with its binary motor, accommodating indoor spaces up to 2,126 sq. ft. in 30 minutes or up to 4,253 sq. ft. in 60 minutes (CADR: Dust 580 / Pollen 450 / Smoke 567).
  • [HyperCaptive Filtration System] Combination of a Washable Pre-Filter, Active Carbon Filter, and HEPA Filter reduces 99.97% of 0.3 micron particles, including pollen and other allergens. It also reduces volatile organic compounds and odor.
  • [Real-time Air Quality Indicator] Enjoy continuous air quality monitoring and optimized purification that adjusts to changing air conditions to conserve energy and maintain the best air quality.
  • [Smart Mode] Experience efficient air purification with Airmega ProX's auto mode and adaptive airflow speed.
  • [Particle Sensor] Detect find dust, pollen, and other small particles in the air with the Particle Senor, which can detect PM 1, PM 2.5, AND PM 10.

Description

1.Airmega Air Purifiers, tested by KCL(Korea Conformity Laboratories), demonstrate effective capture of 0.01㎛ ultra-fine particles and allergens according to Korea Air Cleaning Association standards (SPS-KACA Modified). Performance may vary in your environment. 2.Our HEPA filter complies with IEST-RP-CC007 standards at speed level 1 as tested by SGS (Société Générale de Surveillance). SGS's test report only reflects SGS's evaluation of the sample and does not reflect the evaluation of the batch of goods from which the sample was taken. 3.Tested for acetic acid reduction rate by KCL(Korea Conformity Laboratories) in a chamber under JEM 1467: 2015 conditions for 60 minutes. Results may vary in different environments. 4.Activated Carbon Filter was tested by KCL(Korea Conformity Laboratories) and shown to reduce various harmful gases and odors within 30 minutes, including key VOCs and pollutants. Results are based on lab conditions and may differ in actual use. 5.Allergen filter media was tested by Nichinichi Pharmaceutical to measure allergen concentration using ELISA over a 24-hour reaction period. The test reflects the filter media's performance under laboratory conditions and results may vary in actual product usage environments. 6.Tested reduction rate of ammonia and hydrogen sulfide for 30 minutes under EL608:2023 condition by KCL(Korea Conformity Laboratories). Results may vary in different environments. 7. Tested by Intertek, reduction rates of Naphthalene, Sulfur Dioxide, and Nitrogen Dioxide were tested following JEM-1467:2015 standards. Actual performance may vary depending on the living environment. 9.Tested by KCL(Korea Conformity Laboratories) according to SPS-KACA. The test was conducted with Methyl mercaptan, Isovaleraldehyde, Isovaleric acid in a 1.0±0.1 m3 chamber with a test time of 60 minutes at (24±4)°C and (46±10)% Relative Humidity. A removal ratio of over 99.5% was achieved. Results may vary depending on the actual usage environment. 10.Tested by the Guangzhou Institute of Microbiology, exposed the filter media to protein solutions for 24 hours under ISO 4333-2022 standard. The results showed strong reduction performance: >99.79% for pollen, >99.60% for dog allergen, >99.90% for cat allergen, and >99.80% for dust mites matter allergen. Actual results may vary depending on room size, airflow, and pollutant levels. 11.Tested by KCL(Korea Conformity Laboratories) according to SPS-KACA. The test was conducted in a 1.0±0.1 m³ chamber for 60 minutes at (24±4)°C and (46±10)% Relative Humidity. A removal ratio of >99.5% was achieved for Formaldehyde and Toluene in 60 minutes. Results may vary depending on the actual usage environment. 12.Tested by Intertek, the test was conducted in a 1.0 m³ chamber for 120 minutes resulting a 99.9% removal rate on sulfur dioxide, nitrogen dioxide, and naphthalene. Results may vary depending on the actual usage environment.

Color: Mocha Beige


Brand: Coway


Product Dimensions: 24.3"D x 18.9"W x 36.6"H


Power Source: Corded Electric


Item Weight: 50 Pounds


Power Source: Corded Electric


Control Method: Touch


Filter Type: HEPA Filter, Active Carbon Filter, Pre-Filter


Floor Area: 4253 Square Feet


Noise Level: 23 Decibels


Particle Retention Size: 0.3 Micron


Controller Type: Touch


Wattage: 65 watts


Contaminant Filtration Capability: High, Odors, Pet Dander, Pollen, Volatile Organic Compounds (VOCs)


Special Features: Air Quality Indicator, Auto Mode, Dual Purification, Eco Mode, Filter Replacement Indicator


Filter Class: True HEPA, Active Carbon Filter, Pre-Filter


Item Dimensions D x W x H: 24.3"D x 18.9"W x 36.6"H


Item Weight: 50 Pounds


Color: Mocha Beige


Brand Name: Coway


Model Number: AP-3522F


UPC: 826439000707


Manufacturer: Coway


Warranty Description: 5 Year Manufacturer's Limited Warranty


Part Number: AP-3522F


Included Components: Air Purifier, Filter Set, User Manual


Item Type Name: HEPA Filter Air Purifier


Unit Count: 1.0 Count


Specification Met: CARB Certified, ETL Certified, Energy Star Certified


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: May 31 – Jun 1

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Serious large capacity and high performance home air purifier.
Style: ProX Beige
This might be premature, but I read Condumers Report and this purifier was highest rated as well large cleaning volume. It is big so you need to think about location, but given it purifying volume anywhere is prob ok. The only real downer was expensive filters once a year and noise at low speed. I found the purifier was very very quiet in fact a low speed I needed to put my hand over vent to be sure it was running. So long term per CR it’s great and from my experience very very quiet. It’s a serious investment, but serious purifiers seem to run $500 to over $1000 with more noise and poorer performance. Given the potential for years of service (I hope at least 10) it seems like a good investment. I have not tried all the modes arrrggghhh so many so my views might change but out of the box it’s great. ... show more
Reviewed in the United States on September 19, 2025 by Norma

  • High quality and extremely silent
Style: ProX Beige
Initially purchased an Airmega ProX and Airmega 350 to supplement our older Alen Breathesmart flex. Surprisingly, the larger ProX is the quietest of the three. It emits a soothing sound on level 2 and on level 1 it’s hard to hear it running when more than a few feet away. As someone that struggles with chronic allergies and allergy related headaches, the air feels very clean and our cat has been sleeping a short distance from the ProX due to the soothing sound. The main downsides of the unit are the filter costs and the size, however, Coway has been selling filters discounted on their website. The difference in build quality and sound compared to the 350 was enough for us to return the 350 and swap it with a second ProX for our oversized bedroom. We run both now at 24/7 on level 2 no problem, not audible during work meetings or anything. ... show more
Reviewed in the United States on October 11, 2025 by Amazon Customer

  • OK, let’s talk
Style: ProX Beige
I have a couple air purifiers that claim to work but really don’t. I live in an apartment with two air quality monitors one expensive and the other not so expensive but tells me what I need to know. So, after a few years using the unsatisfactory air purifiers I decided to purchase this unit ONLY because Consumer Reports gave it high remarks (I subscribe to CR and read the report). After using Coway Pro for a few weeks now the unit is just plane awesome. Now granted it is rather large for an apartment but I don’t care IT WORKS!!! Finally! One that works!. My apartment as a norm has no oder but occasionally fireplace smoke from the neighbors is noticeable but not now with the unit. The best win is my next door neighbor smokes and occasionally I can smell it but NOT NOW! My monitors are always in the green and hover around 0 to 1. The Coway Pro is very very quiet and has yet to increase the fan in auto mode it works so well. I really love this thing Consumer Reports was correct here. Update April: Three months in and still loving it. Occasionally I place it into turbo mode which will run for about fifteen minutes and then automatically default back to original setting. I love this feature since I really don’t want it to run in turbo mode for an extended period of time without my intervention. This ProX unit is so efficient that in turbo mode the air has been cleaned in about five minutes. Update June 2025: Had it for over a year now and yes, still loving it! I really have nothing more to add except I plan to purchase another for a different location. Well made, very quiet, still going strong as new. ... show more
Reviewed in the United States on February 26, 2024 by Ed 007

  • Impressive air flow while also being quiet!
Style: ProX Beige
While it is early with these units (I have a second one), I am rather impressed with the airflow and the much quieter volume compared to other air purifiers, including an older Airmega 400, Allerair (loud), Austin Air (varies but not quiet), and so on. While there is not a sufficient amount of carbon in this unit to be really meaningful, I'm mostly interested in the level of air movement and how much air it moves, and all of this is impressive. It is of course about the same size as a mini-fridge, so you do need the right place for it. There are no real smart features, so checking on filter life and when to clean the prefilters is up to you particularly if you turn off the lights. ... show more
Reviewed in the United States on March 22, 2026 by Consumer Amoeba

  • Bricked after 2 months, zero customer support help
Style: ProX Beige
This seemed to work well when it arrived. Not for long. Stopped running at all, which is pretty remarkable if you think about it, the only mechanical thing happening is an electric motor and a fan, not exactly cutting-edge technology. I've spent hours back and forth with customer service via email and phone, shot and edited and uploaded a video showing it definitely not working, etc etc. No help, no plan, not even a shipping label and good luck buddy. That's the better part of a thousand of my hard-earned dollars for this giant ugly thing that does nothing. ... show more
Reviewed in the United States on February 26, 2026 by Ilyse H.

  • Quit working and support is nonexistent - UPDATE
Style: ProX Beige
Worked great for a few weeks and then quit working. There was no owners manual provided, and when I contacted Coway to get an answer about what to do with an E 31 error code they responded asking for video, proof of purchase, a picture of the serial number label, etc. I sent all of that and have never received a response in spite of numerous messages left by me. Product support seems to be nonexistent, so now I’ve got a big piece of junk sitting in my bedroom doing nothing but taking up space. UPDATE: After posting this review I was contacted by someone at Coway and was able to return the unit and receive a replacement, which works perfectly (at least for now). The hang up seemed to be the video they required showing the problem. We scheduled a Facetime call and with that they were able to see what they wanted to see. Still a bit onerous, but at least a process that led to resolution. Again, it's a great item when it's working, quiet and efficient. ... show more
Reviewed in the United States on December 12, 2023 by John R.

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