WinixA231

Air purifier

DOE certified smoke CADR

159cfmDOE test

Dust 167 · PM2.5 163 cfm

Effective room size 246 sq ft (DOE)

DOE data as of 2026-11-03DOE record

Does it fit your room? How DOE sizes rooms

Winix A231: certified to DOE with smoke CADR 159 cfm, dust 167, PM2.5 163, effective room size 246 sq ft. DOE data as of 2026-11-03.

Every model number on this record

Filed with DOE under basic model A231. A listing with any of these numbers is this unit.

Every model number filed under basic model A231, DOE data as of 2026-11-03
Model numberFiled by
A231 (DOE basic model)Winix
A230Winix

How much does the Winix A231 cost to run?

About $4.56 a month, or $54.66 a year, on DOE's annual energy figure of 301 kWh.

Electricity at 18.16¢/kWh, the US residential average for August 2026 (EIA Electric Power Monthly, table 5.6.A). Each 1¢/kWh you pay above or below 18.16¢ moves the yearly figure by $3.01.

How does the Winix A231 rank in its DOE class?

In its DOE class (air purifiers, PM2.5 CADR 150+ cfm), 63 models have a matched Amazon listing. Its CADR/W of 3.2 is 61st of the 63, and 36% below their median of 5.

DOE's annual energy figure for it is 301 kWh, against their median of 266 kWh: $6.36 a year more at the US average price.

Air purifiers for 200 sq ft (80 with a listing)

Among 140 air purifiers, PM2.5 CADR 150+ cfm

Smoke CADR (cfm)159

Higher than 17 of 140. 1 other shares 159.

143591 cfm

Efficiency (CADR/W)3.2

Higher than 5 of 140.

313.5

Three to compare with

From models with a matched listing.

  • Within 20 cfm of its size, highest CADR/W

    Blueair 4512311000161 smoke CADR

    Room size 250 sq ft, CADR/W 8.6: about 63% less power for the same clean air.

  • Nearest size in its class with a higher CADR/W

    Dreo DR-HAP009S158 smoke CADR

    Room size 245 sq ft, CADR/W 6: about 47% less power for the same clean air.

  • Nearest bigger unit

    DREAME CVF16A186 smoke CADR

    Room size 288 sq ft, CADR/W 5.3.

DOE record

Air cleaning

Smoke CADR
159 cfm
Dust CADR
167 cfm
PM2.5 CADR
163 cfm
Effective room size
246 sq ft
Efficiency (IEF)
3.2 cfm/W
Energy use
301 kWh/year

Record

DOE basic model
A231
DOE class
150 <= PM2.5 Clean Air Delivery Rate
Brands on the filings
1
In DOE's list since
2026-11-02first snapshot we hold

Questions

What room size is it for?
DOE lists an effective room size of 246 sq ft, based on its smoke CADR of 159 cfm: CADR and room size.
How much does the Winix A231 cost to run for a year?
About $54.66: DOE's annual figure of 301 kWh at 18.16¢/kWh, the US residential average for August 2026 (EIA).