One unit, 8 brandsNCG-08CI/X1E-W

Antarctic Star 54091EWA0-8K-AS = KISSAIR NCG-08CI/X1E-W · Window AC filed by KISSAIR and 7 other brands

DOE certified cooling, every brand

8,100BTU/hDOE test

Window · CEER 16.3 · 610 W

8,100 BTU/h under every nameChoose on price, warranty and what's in stock.

DOE data as of 2026-11-03DOE record

KISSAIR 54091EWA0-8K-KA, Antarctic Star 54091EWA0-8K-AS, COWSAR 54091EWA0-8K-CS, Electactic 54091EWA0-8K-EL, NCG***-08CI/X1E (NEPO and NINGPU), R.W.FLAME 54091EWA0-8K-RW and others: all filed with DOE under one basic model, NCG-08CI/X1E-W, certified at 8,100 BTU/h. DOE data as of 2026-11-03.

Sold as

  • KISSAIR

    54091EWA0-8K-KA, 54091EWA0-8K-KAZ, NCG-08CI/X1E, NCG-08CI/X1E-W, 54091EWA0-8K-KS, 54091EWA0-8K-KSZ

    8,100 BTU/h

    No Amazon listing matched as of 2026-11-03.

  • Antarctic Star

    54091EWA0-8K-AS, 54091EWA0-8K-ASZ, NCG-08CI/X1E, NCG-08CI/X1E-W

    8,100 BTU/h

    No Amazon listing matched as of 2026-11-03.

  • COWSAR

    54091EWA0-8K-CS, 54091EWA0-8K-CSZ, NCG-08CI/X1E, NCG-08CI/X1E-W

    8,100 BTU/h

    No Amazon listing matched as of 2026-11-03.

  • Electactic

    54091EWA0-8K-EL, NCG-08CI/X1E, NCG-08CI/X1E-W

    8,100 BTU/h

    No Amazon listing matched as of 2026-11-03.

  • NEPO

    NCG***-08CI/X1E, NCG***-08CI/X1E-W

    8,100 BTU/h

    No Amazon listing matched as of 2026-11-03.

  • NINGPU

    NCG***-08CI/X1E, NCG***-08CI/X1E-W

    8,100 BTU/h

    No Amazon listing matched as of 2026-11-03.

  • R.W.FLAME

    54091EWA0-8K-RW, 54091EWA0-8K-RWZ, NCG-08CI/X1E, NCG-08CI/X1E-W

    8,100 BTU/h

    No Amazon listing matched as of 2026-11-03.

  • ZAFRO

    54091EWA0-8K-ZA, 54091EWA0-8K-ZAZ, NCG-08CI/X1E, NCG-08CI/X1E-W

    8,100 BTU/h

    No Amazon listing matched as of 2026-11-03.

The filings

DOE lists 17 individual model numbers under basic model NCG-08CI/X1E-W, filed under 8 brand names. Every filing lists the same figures: 8,100 BTU/h, CEER 16.3 and 610 W.

Each brand's DOE filing under basic model NCG-08CI/X1E-W, DOE data as of 2026-11-03. Identical columns are the evidence.
BrandModel numbersBTU/hCEERWattsListing
KISSAIR54091EWA0-8K-KA, 54091EWA0-8K-KAZ, NCG-08CI/X1E, NCG-08CI/X1E-W, 54091EWA0-8K-KS, 54091EWA0-8K-KSZ8,10016.3610None matched
Antarctic Star54091EWA0-8K-AS, 54091EWA0-8K-ASZ, NCG-08CI/X1E, NCG-08CI/X1E-W8,10016.3610None matched
COWSAR54091EWA0-8K-CS, 54091EWA0-8K-CSZ, NCG-08CI/X1E, NCG-08CI/X1E-W8,10016.3610None matched
Electactic54091EWA0-8K-EL, NCG-08CI/X1E, NCG-08CI/X1E-W8,10016.3610None matched
NEPONCG***-08CI/X1E, NCG***-08CI/X1E-W8,10016.3610None matched
NINGPUNCG***-08CI/X1E, NCG***-08CI/X1E-W8,10016.3610None matched
R.W.FLAME54091EWA0-8K-RW, 54091EWA0-8K-RWZ, NCG-08CI/X1E, NCG-08CI/X1E-W8,10016.3610None matched
ZAFRO54091EWA0-8K-ZA, 54091EWA0-8K-ZAZ, NCG-08CI/X1E, NCG-08CI/X1E-W8,10016.3610None matched

How we know it's one unit

Every brand here filed its model numbers under the same DOE basic model, NCG-08CI/X1E-W. DOE's definition of a basic model (10 CFR 430.2) covers "all units of a given type of covered product (or class thereof) manufactured by one manufacturer" with "the same primary energy source" and nearly identical "electrical, physical, and functional (or hydraulic) characteristics that affect energy consumption, energy efficiency, water consumption, or water efficiency." So one set of DOE figures covers every name on the list. All 8 brands file NCG-08CI/X1E-W itself as their model number, so the number alone doesn't say which of them builds it.

Brands may still differ in color, controls, accessories, warranty and support. Full record and every model number: KISSAIR NCG-08CI/X1E-W.

How much does the NCG-08CI/X1E-W cost to run?

DOE's record lists 610 W of electrical input while cooling. That's about 11¢ an hour, or $26.59 for 30 days at 8 hours a day.

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.

Among 105 window ACs, 8,000 to 13,999 BTU/h

Cooling (BTU/h)8,100

Higher than 30 of 105.

8,00012,000 BTU/h

Efficiency (CEER)16.3

Higher than 102 of 105.

1617.6

Who makes the NCG-08CI/X1E-W, and is it the same under every brand?

Who makes the Antarctic Star 54091EWA0-8K-AS?
DOE's records don't say. The Antarctic Star 54091EWA0-8K-AS is filed under basic model NCG-08CI/X1E-W along with 7 other brands. All of them file that same number as their model, and DOE's database has no manufacturer field.
Is the Antarctic Star 54091EWA0-8K-AS the same as the KISSAIR 54091EWA0-8K-KA?
Yes, by DOE's records. Both are filed under basic model NCG-08CI/X1E-W and list the same certified figures: 8,100 BTU/h, CEER 16.3 and 610 W.
Which brand of NCG-08CI/X1E-W is cheapest to run?
They tie: every brand files 8,100 BTU/h, CEER 16.3 and 610 W, so each costs about 11¢ an hour to run while cooling.

Related units, shared brands

More: all units sold under several brands · all window ACs