Search  for anything...

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)

  • Based on 107 reviews
Condition: New
Checking for the best price...
$899.99 Why this price?
Labor Day Deal · 10% off was $999.99

Buy Now, Pay Later


As low as / mo
  • – Up to 36-month term if approved
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund / replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Sep 6 – Sep 7
Order within 17 hours and 36 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Style: AIRMEGA 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 db


Particle Retention Size: 0.3 micron


Controller Type: Touch


Wattage: 65 watts


Contaminant Filtration Capability: Dust, 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


Unit Count: 1 Count


Manufacturer: Coway


Warranty Description: 5 Year Manufacturer's Limited Warranty


Included Components: Air Purifier, Filter Set, User Manual


Item Type Name: HEPA Filter Air Purifier


Part Number: AP-3522F


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: Sep 6 – Sep 7

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Fantastic! Does whole basement
Style: AIRMEGA ProX Beige
Have had this nearly a year now and it is fantastic! My daughter had to move in with us and she brought a rescue dog with her. Turns out I was allergic to him and very sensitive to his odor ( she was good about bathing him but his severe allergies kept him broke out which created the odor). This machine was a miracle worker.. it is quite and got rid of all odors so well I can actually work in the basement and not be bothered. Thanks much! ... show more
Reviewed in the United States on August 5, 2026 by Fred

  • So if you want to breathe clean air, this is the machine for you.
Style: AIRMEGA ProX Beige
With air quality changing daily and with no April Air cleaner on the furnace, we need some way to clean our air. This is a whole house system, it is quite to operate, and adjusts as needed. The first day it was on high, when I got up the next day it had cleaned all the air. The The quality of the housing, the filters are the best out there. There is no way to put a value on your life, last I knew we all need clean to live. So if you want to breathe clean air, this is the machine for you ... show more
Reviewed in the United States on July 25, 2026 by Linda

  • Big, expensive, works 100%
Style: AIRMEGA ProX Beige
Yes its big, yes its expensive, but if works, and not just a little. We have an 65 year old house and two large dogs and 2 cats and 2 teenagers so... our house had an "odor" to say the least, also we have large open spaces. Our house is about 4,000 sqft with the great room/kitchen/livingroom being one large continuous space with very tall ceilings. Plus... did I mention our house is old, build in 1959 out of real wood, lathe and plaster, all the good stuff... but after almost 65 years... the good stuff smells... Ok to get to it... this giant air purifier works amazingly well, if you have the space, or you dont care about size, it works better than anything or any other unit we've tried. After 2 days our house has ZERO smell and the air is noticeably clean and dust free. When the dogs are playing rough, or our HVAC kicks on and puts particulate into the air, the display on the unit and indicator light changes if the air is dirty, on the first day, every time the HVAC came on I noticed it would go from 1 or 2 up to 20 or so... it automatically speeds up to clean the air, and now after several days, its only goes up to maybe 4 or 5, umits getting better and better. As mentioned all odor in our entire house (except the teenagers bedrooms, air nothing gonna fix that!) Is GONE. We had a friend who regularly is at our house over last night and she walked in and the first thing she said is "what did you do?, I've never been in your house and it not smell..." thus I decided this product was worthy of writing a review. I was skeptical to spend this much $ on a unit, though we've spent much more when you combine all the others we've tried. Sure they worked to a small degree, or if you were sitting close to them, but this is the first one that has delivered 100% whole-house odor free clean air. Its the sise of a water cooler without the water tank, so keep that in mide, but well worth it to have an odor-free house ... show more
Reviewed in the United States on February 11, 2024 by Diddy1212

  • Serious large capacity and high performance home air purifier.
Style: AIRMEGA 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

  • Quit working and support is nonexistent - UPDATE
Style: AIRMEGA 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.

  • Best rated large Air Purifier on Consumer Reports
Style: AIRMEGA ProX Beige
#1 rated large Air Purifier on Consumer Reports. It handles over a 4000 square foot area according to ratings. I first bought one for my bedroom suite and was so satisfied with performance and design that I bought a second one for my living room. I'm very happy with my purchase.
Reviewed in the United States on July 20, 2026 by Dave

  • OK, let’s talk
Style: AIRMEGA 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

  • Bricked after 2 months, zero customer support help
Style: AIRMEGA 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.

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...