ProX(W)

Coway

ProX(W)

75 positive 0 neutral 10 negative

Based on 85 Reddit mentions

$999.00

Buy on Amazon

We may earn a small commission.

Most discussed features

Sentiment summary across the product areas Reddit users mention most.

Reddit mentions

Original Reddit posts and comments behind this analysis.

Filtered by featurefilter qualityClear feature

Looking For A Genuine Top-Tier Air Purifier For 3 Rooms Of My Apartment

Housefresh.com's reviews are useful, because they measure sound and CADR using a consistent methodology, allowing you to compare among units. They've tested the three you mention. I'd suggest making a table of CADR and noise at each fan speed from their reviews. That's what I did. Based on a quick l

...

theorist9 in r/AirPurifiers

May 13, 2026 4:27 AM

3

One air purifier for large area with reusable filters?

So I can't make a informed recommendation without room dimensions. The only filters that will be reusable are the pre-filters. HEPA or other pleated filtration media must be disposed once clogged. Tiny particles are trapped in the filtration media, not just on it. Keep in mind purifiers aren't good

...

sissasassafrastic in r/AirPurifiers

January 19, 2026 8:42 PM

1

Air Purifier for Allergies and Asthma

Nothing at that cost will cover 800 square feet. For allergies you really need around 4-6 air changes an hour to be most effective. You’d need like 500-600 CFM. That’s on the level of the coway airmega proX for one singular air purifier. Just the bedroom though is much more reasonable. I have 2 cowa

...

Psychological_Lab203 in r/AirPurifiers

February 6, 2026 9:05 AM

1

IQAir Multigas Lackluster Performance on NO2

Nice! Other studies have shown formaldehyde doesn't have good adsorption onto carbon, so it's interesting that here it's nearly as effective for formaldehyde as it is for a simple alkane (n-heptane). That's probably because Oransi's carbon has been modified with potassium permanganate, which is know

...

theorist9 in r/AirPurifiers

May 5, 2026 10:28 PM

1

Xiaomi 4 lite does quite the wobble on 11-19 sqm setting

theorist9 in r/AirPurifiers

April 29, 2026 12:51 AM

1

Purifier/scrubber for new-construction home? Reccs sought

Just so you know, Jaspr would be very poor for gases/vapors/odors/VOCs. It doesn't have much activated carbon by weight at all. To boot, it's wildly overpriced for particulates at $1,199 or $999. Their marketing has been highly dishonest (fair warning: the exchange is super long). Jaspr's top Smoke

...

sissasassafrastic in r/AirPurifiers

March 7, 2026 2:05 AM

1

Best air purifier for cat allergens in a 1000 sq ft basement? Dyson vs Coway or something better?

Most combination units (e.g., purification + heating) perform one or more functions badly. Avoid Dyson. It's all marketing; they offer lousy particulates cleaning for the price. If you need to tackle particulates like dander and gases/vapors/odors, you need two types of air purifier. This is because

...

sissasassafrastic in r/AirPurifiers

January 23, 2026 10:03 PM

1

Coway or Winix or Other? (WA, USA)

If you want to remove particulates and gases/vapors/odors/VOCs, you really two two types of air purifier. This is because most common purifier brands have little activated carbon or other sorbent media by weight. This includes Coway and Winix. These units are designed for particulates capture. Heavy

...

sissasassafrastic in r/AirPurifiers

January 24, 2026 2:58 PM

1

Purifier to help with allergies

If you want the absolute best for the bedroom at night, you want the maximum airflow (so the air is filtered multiple times per hour) with the minimum noise, and for that you need a big air purifier running at its lowest speed. I'm currently testing air purifiers, and I've found the Coway Airmega Pr

...

theorist9 in r/AirPurifiers

March 31, 2026 5:36 PM

1

I've never owned an air purifier and I need help, Please!

Great, thank you. 😺 For wildfire smoke particles, AHAM recommends Smoke CADR should equal a room's area (assumes an 8 ft. ceiling). The 3,400 cu. ft. space needs a minimum Smoke CADR of 425 CFM. The 900 cu. ft. bedroom needs a minimum Smoke CADR of 113 CFM. The only single unit that could fulfill th

...

sissasassafrastic in r/AirPurifiers

June 4, 2025 2:33 PM

2

Top alternatives in Air Purifiers

#1