DysonBP04

Air purifier

DOE certified smoke CADR

174cfmDOE test

Dust 193 · PM2.5 184 cfm

Effective room size 270 sq ft (DOE)

DOE data as of 2026-11-03DOE record

Does it fit your room? How DOE sizes rooms

Dyson BP04: certified to DOE with smoke CADR 174 cfm, dust 193, PM2.5 184, effective room size 270 sq ft. DOE data as of 2026-11-03.

Every model number on this record

Filed with DOE under basic model BP04. A listing with any of these numbers is this unit.

Every model number filed under basic model BP04, DOE data as of 2026-11-03
Model numberFiled by
BP04 (DOE basic model)Dyson

How much does the Dyson BP04 cost to run?

About $3.83 a month, or $45.94 a year, on DOE's annual energy figure of 253 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 $2.53.

How does the Dyson BP04 rank in its DOE class?

In its DOE class (air purifiers, PM2.5 CADR 150+ cfm), 63 models have a matched Amazon listing. 45 of them have a higher CADR/W than its 4.1, which is 18% below their median of 5.

DOE's annual energy figure for it is 253 kWh, against their median of 266 kWh: $2.36 a year less 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)174

Higher than 31 of 140.

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

    Blueair 4512311000161 smoke CADR

    Room size 250 sq ft, CADR/W 8.6: about 52% less power for the same clean air.

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

    DREAME CVF16A186 smoke CADR

    Room size 288 sq ft, CADR/W 5.3: about 23% less power for the same clean air.

  • Nearest bigger unit

    Priestley P360195 smoke CADR

    Room size 302 sq ft, CADR/W 5.1.

DOE record

Air cleaning

Smoke CADR
174 cfm
Dust CADR
193 cfm
PM2.5 CADR
184 cfm
Effective room size
270 sq ft
Efficiency (IEF)
4.1 cfm/W
Energy use
253 kWh/year

Record

DOE basic model
BP04
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 270 sq ft, based on its smoke CADR of 174 cfm: CADR and room size.
How much does the Dyson BP04 cost to run for a year?
About $45.94: DOE's annual figure of 253 kWh at 18.16¢/kWh, the US residential average for August 2026 (EIA).