Atmosphere SKY120539

Air purifier

DOE certified smoke CADR

316cfmDOE test

Dust 304 · PM2.5 310 cfm

Effective room size 489 sq ft (DOE)

DOE data as of 2026-11-03DOE record

Does it fit your room? How DOE sizes rooms

Atmosphere SKY 120539: certified to DOE with smoke CADR 316 cfm, dust 304, PM2.5 310, effective room size 489 sq ft. DOE data as of 2026-11-03.

Every model number on this record

Filed with DOE under basic model 120539. A listing with any of these numbers is this unit.

Every model number filed under basic model 120539, DOE data as of 2026-11-03
Model numberFiled by
120539 (DOE basic model)–
NAAtmosphere SKY

How much does the Atmosphere SKY 120539 cost to run?

About $4.51 a month, or $54.12 a year, on DOE's annual energy figure of 298 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 $2.98.

How does the Atmosphere SKY 120539 rank in its DOE class?

In its DOE class (air purifiers, PM2.5 CADR 150+ cfm), 63 models have a matched Amazon listing. 20 of them have a higher CADR/W than its 6.1, which is 22% above their median of 5.

DOE's annual energy figure for it is 298 kWh, against their median of 266 kWh: $5.81 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)316

Higher than 106 of 140.

143591 cfm

Efficiency (CADR/W)6.1

Higher than 88 of 140. 4 others share 6.1.

313.5

Three to compare with

From models with a matched listing.

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

    Blueair 4412311000321 smoke CADR

    Room size 498 sq ft, CADR/W 10.2: about 40% less power for the same clean air.

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

    LG AS601HBB0305 smoke CADR

    Room size 473 sq ft, CADR/W 6.6: about 8% less power for the same clean air.

  • Nearest bigger unit

    Winix C909337 smoke CADR

    Room size 522 sq ft, CADR/W 4.

DOE record

Air cleaning

Smoke CADR
316 cfm
Dust CADR
304 cfm
PM2.5 CADR
310 cfm
Effective room size
489 sq ft
Efficiency (IEF)
6.1 cfm/W
Energy use
298 kWh/year

Record

DOE basic model
120539
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
ENERGY STAR record
120539**certified 2017-08-07

Questions

What room size is it for?
DOE lists an effective room size of 489 sq ft, based on its smoke CADR of 316 cfm: CADR and room size.
How much does the Atmosphere SKY 120539 cost to run for a year?
About $54.12: DOE's annual figure of 298 kWh at 18.16¢/kWh, the US residential average for August 2026 (EIA).