Coway Airmega ProX specs

Coway Airmega ProX is an ENERGY STAR certified air purifier listed for rooms up to 894 sq ft with a smoke CADR of 577 cfm and 335 kWh per year of energy use.

Official ENERGY STAR product data · certified 2023-01-31 · dataset updated 2026-11-06

Coway Airmega ProX lists a smoke CADR of 577 cfm (the highest CADR of the 216 certified ones) for rooms up to 894 sq ft, at 335 kWh per year and 0 ppb reported ozone.

Official specs

ENERGY STAR listing for Coway Airmega ProX. “n/c” means the listing has no value for that field.
CADR — smoke577 cfm
CADR — dust586 cfm
CADR — pollen450 cfm
Room size listed894 sq ft
Annual energy use335 kWh/yr
Efficiency (smoke CADR per watt)10.2 cfm/W
Ozone emissions0 ppb
TechnologyFan and Filter
Filter typeHEPA-Type
Automatic modeAir Quality Sensor
ConnectedNo
Noise leveln/c
ENERGY STAR certified2023-01-31

Source: ENERGY STAR certified product data, record 4015877.

Similar air purifiers

Same yardstick for each model, from the ENERGY STAR listings.
ModelCADR (smoke)cfmRoom sizesq ftEnergykWh/yrOzoneppb
Coway Airmega ProX this page5778943350
Blueair 67122110003936093362
LEVOIT LAP-C601S-WUS3916063870
Dreo DR-HAP003S2944562820

Skip it if

  • Your room is larger than 894 sq ft: ENERGY STAR lists this model for rooms up to that size (8-foot ceiling).
  • You specifically want a filter listed as “HEPA”: ENERGY STAR lists this one as “HEPA-Type”.
  • You want Wi-Fi control: the listing shows no connected feature.

How it ranks in the ENERGY STAR list

  • smoke CADR: 577 — rank 1 of 216 certified air purifier models (higher is better).
  • annual energy use: 335 — rank 192 of 216 certified air purifier models (lower is better).
  • energy efficiency (CFM/W): 10.2 — rank 11 of 216 certified air purifier models (higher is better).

Ranks compare this model with every air purifier in the ENERGY STAR dataset (2026-11-06), not with products on sale today.

Reading these specs

CADR
Clean Air Delivery Rate, in cubic feet per minute, as listed for smoke, dust and pollen. Higher means more air cleaned per minute for that particle size.
Room size
The room size in square feet that ENERGY STAR lists for this model.
kWh/yr
Annual energy use as listed by ENERGY STAR.
Ozone
Ozone emissions in parts per billion as listed.

Noise level is not part of the ENERGY STAR dataset, so it shows as n/c. Check the maker’s own specification sheet for decibels.

Other model numbers in this listing

ENERGY STAR lists these variants together with Airmega ProX; they share the specs above.

  • Airmega ProX(W)
  • Airmega ProX(*)
  • AP-3522F_US
  • AP-3522F_WT
  • AP-3522F_*

Where to buy

Search Amazon.com for this exact model. Prices and availability change, so we don’t print them.

View on Amazon — search results for Coway Airmega ProX on Amazon.com

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Frequently asked questions

What room size is the Coway Airmega ProX listed for?

Start with the room-size rating, then compare it with the room where the unit will sit. ENERGY STAR lists 894 sq ft for this model, with a smoke CADR of 577 cfm. Ceiling height and layout change real-world results, so treat it as a rated figure and leave the clearance the maker’s manual asks for around the intake and outlet.

How much energy does the Coway Airmega ProX use?

The listing gives 335 kWh per year and an efficiency of 10.2 cfm per watt.

What filter does the Coway Airmega ProX use, and does it produce ozone?

ENERGY STAR lists the filter type as HEPA-Type. Ozone emissions are listed at 0 ppb. Compare the stated filter type rather than marketing language such as “HEPA-like”. Noise level is not part of the ENERGY STAR dataset (n/c), so see the maker’s specifications for decibels.

Sources

We compile and compare published data; we do not run our own product tests. See How We Compare.