Coway: 3 DOE certified models

Coway has 3 air purifier basic models certified to DOE as of 2026-11-03, rated smoke CADR 67 to 255 cfm. How their efficiency compares with their DOE class is below.

Highest certified smoke CADR among its air purifiers: Coway AP-1526D at 255 cfm.

Source: DOE Compliance Certification Database (air purifiers), data as of 2026-11-03.

As an Amazon Associate I earn from qualifying purchases.

Air purifiers

3 Coway air purifiers, listed models first. DOE data as of 2026-11-03.
#	Model	Labels	Smoke CADR, cfm	Room size	PM2.5 CADR	CADR/W	Brands	Amazon
1	CowayAP-1526D	CADR/W 7.6	255cfm, 395 sq ft	395 sq ft	257	7.6	1	Check price on Amazon
2	CowayAP-1512N	CADR/W 4.5	242cfm, 375 sq ft	375 sq ft	243	4.5	1	Check price on Amazon
3	CowayAP-0425C(LG)	CADR/W 6.1	67cfm, 104 sq ft	104 sq ft	71	6.1	1	Check price on Amazon

How efficient are Coway air purifiers?

Of the 3 Coway air purifiers, 2 file a higher CADR/W than the class median and 1 falls below it.

Coway air purifiers against the median CADR/W of their DOE class. DOE data as of 2026-11-03.
DOE class	Coway models	Above median	Class median	Best Coway
Air purifiers, PM2.5 CADR 150+ cfm (140)	2	1	CADR/W 5.5	AP-1526D CADR/W 7.6
Air purifiers, PM2.5 CADR 10 to 99 cfm (90)	1	1	CADR/W 3.5	AP-0425C(LG) CADR/W 6.1

A higher CADR/W means more clean air per watt.

Who makes Coway air purifiers?

DOE's database has no manufacturer field, so the evidence is whose model number each unit is filed under and which other brands file the same unit.

None of the 3 Coway basic models is filed by another brand as of 2026-11-03, and none uses another company's model number. DOE's records tie them to Coway alone.

How much does a Coway air purifier cost to run?

DOE's annual energy figures for the 3 Coway air purifiers that file one run from 67 to 313 kWh a year: about $12.17 to $56.84 a year. The lowest is Coway AP-0425C(LG) (67 cfm, CADR/W 6.1) and the highest Coway AP-1512N (242 cfm, CADR/W 4.5).

At 18.16¢ per kWh, the US average residential price for August 2026 (EIA Electric Power Monthly, table 5.6.A). Worked out from the certified figures.

Questions about Coway

Is Coway a good air purifier brand?: How its 3 air purifiers compare on efficiency with their DOE class is above. All 3 are filed under Coway alone. We don't test reliability, noise or build quality, so we can't rank brands on those. How we compare models.
What room size are Coway air purifiers rated for?: DOE's effective room size for its 3 rated models is 104 to 395 sq ft, from a certified smoke CADR 67 to 255 cfm. CADR and room size.
Which Coway air purifier is the most efficient for its size?: Coway AP-0425C(LG), at CADR/W 6.1: higher than 81 of the 90 in its DOE class (air purifiers, PM2.5 CADR 10 to 99 cfm). At the other end is Coway AP-1512N, at CADR/W 4.5, higher than 38 of the 140 in its class.