COWSARA5411-8K-CS

Name: COWSAR A5411-8K-CS
Brand: COWSAR

Portable AC

DOE certified cooling

5,000BTU/hSACC, DOE test

Single hose · CEER 6.2

Cools rooms up to 150 sq ft

DOE data as of 2026-11-03DOE record

Does it fit your room? ENERGY STAR sizing chart

COWSAR A5411-8K-CS: certified to DOE at 5,000 BTU/h SACC, CEER 6.2, single hose. DOE data as of 2026-11-03.

Every model number on this record

Filed with DOE under basic model A5411-8K-CS. A listing with any of these numbers is this unit.

Every model number filed under basic model A5411-8K-CS, DOE data as of 2026-11-03
Model number	Filed by
A5411-8K-CS (DOE basic model)	COWSAR

How much does the COWSAR A5411-8K-CS cost to run?

About 15¢ an hour of cooling, or $35.15 for 30 days at 8 hours a day (less once the compressor cycles off).

5,000 BTU/h SACC divided by a CEER of 6.2 is about 806 W while cooling. 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 8 hour figure by 6¢.

How does the COWSAR A5411-8K-CS rank in its DOE class?

In its DOE class (single hose portable ACs), 171 models have a matched Amazon listing. 148 of them have a higher CEER than its 6.2, which is 15% below their median of 7.3. On cost, the same 5,000 BTU/h at their median CEER would cost about $29.85 for 30 days at 8 hours, $5.30 less than this one.

Portable ACs that cool 150 sq ft (204 with a listing)

Among 1,044 single hose portable ACs

Cooling (SACC)5,000

Higher than 9 of 1,044. 90 others share 5,000.

median 8,000

2,00016,000 BTU/h

Efficiency (CEER)6.2

Higher than 48 of 1,044. 52 others share 6.2.

median 7.3

4.413.4

Three to compare with

From models with a matched listing.

Within 1,000 BTU/h of its size, highest CEER
Antarctic Star AC7290-10K5,500 SACC
Up to 150 sq ft, single hose, CEER 7.9: about 22% less power for the same cooling.
Nearest size in its class with a higher CEER
LG LP0526PWF5,000 SACC
Up to 150 sq ft, single hose, CEER 6.6: about 6% less power for the same cooling.
Nearest bigger unit
AKIRES OL-A016JE06N36,250 SACC
Up to 250 sq ft, single hose, CEER 7.2.

DOE record

Cooling

Cooling capacity (SACC): 5,000 BTU/h
Efficiency (CEER): 6.2 Btu/Wh

Build

Hose setup tested: Single hoseFiled as Single-duct
Heating function: No
Condensate removal: Auto-evaporation
Variable speed: No

Record

DOE basic model: A5411-8K-CS
DOE class: Single hose portable ACs
Brands on the filings: 1
In DOE's list since: 2026-11-02first snapshot we hold

Questions

What is the COWSAR A5411-8K-CS's real BTU?: It's certified to DOE at 5,000 BTU/h SACC (seasonally adjusted cooling capacity), the rating DOE requires for portable ACs. A box figure labeled ASHRAE is usually higher for the same unit because it comes from a different test: SACC vs ASHRAE.
Is it single hose or dual hose?: It was tested as a single hose unit, per the DOE record.
How big a room does it cool?: About 150 sq ft. ENERGY STAR's sizing chart calls for 5,000 BTU/h in rooms up to 150 sq ft. A sunny room, a kitchen or a high ceiling needs more.
How much does the COWSAR A5411-8K-CS cost to run for 8 hours?: About $1.17 for 8 hours of cooling: roughly 806 W at 18.16¢/kWh, the US residential average for August 2026 (EIA).