One unit, 16 brandsA4211D2-10K

Auseo A4211D2-10K = Antarctic Star A4211D2-10K · Portable AC filed by Antarctic Star and 15 other brands

DOE certified cooling, every brand

6,450BTU/hSACC, DOE test

Single hose · CEER 7.4

6,450 BTU/h under every nameChoose on price, warranty and what's in stock.

DOE data as of 2026-11-03DOE record

A4211D2-10K (Antarctic Star, Auseo, COWSAR, Electactic, Fornido, FREE VILLAGE and 10 more brands): all filed with DOE under one basic model, A4211D2-10K, certified at 6,450 BTU/h SACC. DOE data as of 2026-11-03.

Sold as

Filed as A4211D2-10K by 16 brands, no Amazon listing matched as of 2026-11-03:

Show all 16 brands

The filings

DOE lists one individual model number, A4211D2-10K, under basic model A4211D2-10K, filed under 16 brand names. Every filing lists the same figures: 6,450 BTU/h SACC, CEER 7.4 and single hose.

Each brand's DOE filing under basic model A4211D2-10K, DOE data as of 2026-11-03. Identical columns are the evidence.
BrandModel numbersSACCCEERHoseHeatListing
Antarctic StarA4211D2-10K6,4507.4Single hoseNoNone matched
AuseoA4211D2-10K6,4507.4Single hoseNoNone matched
COWSARA4211D2-10K6,4507.4Single hoseNoNone matched
ElectacticA4211D2-10K6,4507.4Single hoseNoNone matched
FornidoA4211D2-10K6,4507.4Single hoseNoNone matched
FREE VILLAGEA4211D2-10K6,4507.4Single hoseNoNone matched
HavatoA4211D2-10K6,4507.4Single hoseNoNone matched
Joy PebbleA4211D2-10K6,4507.4Single hoseNoNone matched
KismileA4211D2-10K6,4507.4Single hoseNoNone matched
KISSAIRA4211D2-10K6,4507.4Single hoseNoNone matched
KNDKOA4211D2-10K6,4507.4Single hoseNoNone matched
MoifoiA4211D2-10K6,4507.4Single hoseNoNone matched
NUAGEA4211D2-10K6,4507.4Single hoseNoNone matched
R.W.FLAMEA4211D2-10K6,4507.4Single hoseNoNone matched
RintufA4211D2-10K6,4507.4Single hoseNoNone matched
ZAFROA4211D2-10K6,4507.4Single hoseNoNone matched

How we know it's one unit

Every brand here filed its model numbers under the same DOE basic model, A4211D2-10K. 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 16 brands file A4211D2-10K 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: Antarctic Star A4211D2-10K.

How much does the A4211D2-10K cost to run?

6,450 BTU/h SACC divided by a CEER of 7.4 is about 872 W while cooling. That's about 16¢ an hour, or $37.99 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 1,044 single hose portable ACs

Cooling (SACC)6,450

Higher than 297 of 1,044. 1 other shares 6,450.

2,00016,000 BTU/h

Efficiency (CEER)7.4

Higher than 655 of 1,044. 2 others share 7.4.

4.413.4

Who makes the A4211D2-10K, and is it the same under every brand?

Who makes the Auseo A4211D2-10K?
DOE's records don't say. The Auseo A4211D2-10K is filed under basic model A4211D2-10K along with 15 other brands. All of them file that same number as their model, and DOE's database has no manufacturer field.
Is the Auseo A4211D2-10K the same as the Antarctic Star A4211D2-10K?
Yes, by DOE's records. Both are filed under basic model A4211D2-10K and list the same certified figures: 6,450 BTU/h SACC, CEER 7.4 and single hose.
Which brand of A4211D2-10K is cheapest to run?
They tie: every brand files 6,450 BTU/h SACC, CEER 7.4 and single hose, so each costs about 16¢ an hour to run while cooling.

Related units, shared brands

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