WindmillWAP1M1

Air purifier

DOE certified smoke CADR

286cfmDOE test

Dust 284 · PM2.5 285 cfm

Effective room size 443 sq ft (DOE)

DOE data as of 2026-11-03DOE record

Does it fit your room? How DOE sizes rooms

Windmill WAP1M1: certified to DOE with smoke CADR 286 cfm, dust 284, PM2.5 285, effective room size 443 sq ft. DOE data as of 2026-11-03.

Every model number on this record

Filed with DOE under basic model WAP1M1. A listing with any of these numbers is this unit.

Every model number filed under basic model WAP1M1, DOE data as of 2026-11-03
Model numberFiled by
WAP1M1 (DOE basic model)Windmill
WAP2M1Windmill
WAP3M1Windmill
WAP3M1-TWindmill

How much does the Windmill WAP1M1 cost to run?

About $6.13 a month, or $73.55 a year, on DOE's annual energy figure of 405 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 $4.05.

How does the Windmill WAP1M1 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 4.1 is tied for 46th of the 63, and 18% below their median of 5.

DOE's annual energy figure for it is 405 kWh, against their median of 266 kWh: $25.24 a year more at the US average price.

Air purifiers for 300 sq ft (44 with a listing)

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

Smoke CADR (cfm)286

Higher than 90 of 140. 1 other shares 286.

143591 cfm

Efficiency (CADR/W)4.1

Higher than 27 of 140. 3 others share 4.1.

313.5

Three to compare with

From models with a matched listing.

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

    LEVOIT LAP-C511S-WUS301 smoke CADR

    Room size 467 sq ft, CADR/W 9: about 54% less power for the same clean air.

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

    DREAME CVF14A286 smoke CADR

    Room size 443 sq ft, CADR/W 5.4: about 24% less power for the same clean air.

  • Nearest bigger unit

    LG AS601HHB0309 smoke CADR

    Room size 479 sq ft, CADR/W 5.8.

DOE record

Air cleaning

Smoke CADR
286 cfm
Dust CADR
284 cfm
PM2.5 CADR
285 cfm
Effective room size
443 sq ft
Efficiency (IEF)
4.1 cfm/W
Energy use
405 kWh/year

Record

DOE basic model
WAP1M1
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 443 sq ft, based on its smoke CADR of 286 cfm: CADR and room size.
How much does the Windmill WAP1M1 cost to run for a year?
About $73.55: DOE's annual figure of 405 kWh at 18.16¢/kWh, the US residential average for August 2026 (EIA).