COSTWAY: 26 DOE certified models
COSTWAY has 26 basic models certified to DOE as of 2026-11-03: 20 portable ACs (5,000 to 10,800 BTU/h SACC) and 6 dehumidifiers (8 to 42 pints/day under the 2019 DOE test). 2 are the same unit as models filed under other brands. How their efficiency compares with their DOE class is below.
Key findings
- Highest certified cooling capacity among its portable ACs: COSTWAY JHS-A020BA-10KR-D at 10,800 BTU/h SACC.
- Most efficient for its class: COSTWAY JHS-A026A-10KRH-D, CEER 10, higher than 1,030 of the 1,044 single hose portable ACs certified to DOE.
- Highest certified water removal among its dehumidifiers: COSTWAY ES10808US-WH at 42 pints/day.
Source: DOE Compliance Certification Database (portable ACs, dehumidifiers), data as of 2026-11-03.
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Portable air conditioners
| # | Photo | Model | Labels | SACC, BTU/h | Covers | CEER | Hose | Heat | Brands | Amazon |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | COSTWAYFP11175USfiled as NEPO NPP-06H/X1E |
| 6,000SACC, up to 250 sq ft | 250 sq ft | 6.7 | Single hose | No | 17 | Check price on Amazon |
| 2 |  | COSTWAYFP11174USfiled as NEPO NPP-05C/X1E |
| 5,000SACC, up to 150 sq ft | 150 sq ft | 6.3 | Single hose | No | 17 | Check price on Amazon |
| 3 | COSTWAYJHS- |
| 10,800SACC, up to 450 sq ft | 450 sq ft | 8.1 | Single hose | No | 1 | ||
| 4 | COSTWAYJHS- |
| 10,300SACC, up to 450 sq ft | 450 sq ft | 10 | Single hose | Yes | 1 | ||
| 5 | COSTWAYFP10290US- |
| 10,200SACC, up to 450 sq ft | 450 sq ft | 7.9 | Single hose | No | 1 | ||
| 6 | COSTWAYFP10291US- |
| 10,200SACC, up to 450 sq ft | 450 sq ft | 7.9 | Single hose | No | 1 | ||
| 7 | COSTWAYFP10234CA- |
| 8,000SACC, up to 350 sq ft | 350 sq ft | 7.3 | Single hose | No | 1 | ||
| 8 | COSTWAYFP10234US- |
| 8,000SACC, up to 350 sq ft | 350 sq ft | 7.3 | Single hose | No | 1 | ||
| 9 | COSTWAYFP10289US- |
| 8,000SACC, up to 350 sq ft | 350 sq ft | 7.3 | Single hose | No | 1 | ||
| 10 | COSTWAYFP10921US- |
| 8,000SACC, up to 350 sq ft | 350 sq ft | 7.2 | Single hose | No | 1 |
10 more certified, no listing matched
| # | Photo | Model | Labels | SACC, BTU/h | Covers | CEER | Hose | Heat | Brands |
|---|---|---|---|---|---|---|---|---|---|
| 1 | COSTWAYFP10270CA- |
| 6,000SACC, up to 250 sq ft | 250 sq ft | 6.6 | Single hose | No | 1 | |
| 2 | COSTWAYFP10270US- |
| 6,000SACC, up to 250 sq ft | 250 sq ft | 6.6 | Single hose | No | 1 | |
| 3 | COSTWAYFP10904US- |
| 6,000SACC, up to 250 sq ft | 250 sq ft | 6.6 | Single hose | No | 1 | |
| 4 | COSTWAYFP10924US- |
| 6,000SACC, up to 250 sq ft | 250 sq ft | 6.6 | Single hose | No | 1 | |
| 5 | COSTWAYFP10925US- |
| 6,000SACC, up to 250 sq ft | 250 sq ft | 6.6 | Single hose | No | 1 | |
| 6 | COSTWAYEP24937 |
| 5,000SACC, up to 150 sq ft | 150 sq ft | 6.1 | Single hose | No | 1 | |
| 7 | COSTWAYFP10233CA- |
| 5,000SACC, up to 150 sq ft | 150 sq ft | 6.2 | Single hose | No | 1 | |
| 8 | COSTWAYFP10233US- |
| 5,000SACC, up to 150 sq ft | 150 sq ft | 6.2 | Single hose | No | 1 | |
| 9 | COSTWAYFP10923US- |
| 5,000SACC, up to 150 sq ft | 150 sq ft | 6.2 | Single hose | No | 1 | |
| 10 | COSTWAYFP10947US- |
| 5,000SACC, up to 150 sq ft | 150 sq ft | 6.2 | Single hose | No | 1 |
Dehumidifiers
| # | Photo | Model | Labels | Pints/day (2019 test) | IEF, L/kWh | DOE class | Brands |
|---|---|---|---|---|---|---|---|
| 1 | COSTWAYES10637US- |
| 335pints/day, 2019 DOE test | 3.7 | over 50 | 1 | |
| 2 | COSTWAYES10638US- |
| 335pints/day, 2019 DOE test | 3.7 | over 50 | 1 | |
| 3 | COSTWAYES10808US- |
| 42pints/day, 2019 DOE test | 1.99 | 25 to 50 | 1 | |
| 4 | COSTWAYES10810US- |
| 16pints/day, 2019 DOE test | 1.78 | up to 25 | 1 | |
| 5 | COSTWAYES10811US- |
| 16pints/day, 2019 DOE test | 1.78 | up to 25 | 1 | |
| 6 | COSTWAYES10809US- |
| 8pints/day, 2019 DOE test | 1.36 | up to 25 | 1 |
How efficient are COSTWAY models?
Portable air conditioners
Of the 20 COSTWAY portable ACs, 4 file a higher CEER than the class median, 3 match it and 13 fall below it.
| Class | COSTWAY models | Above median | Class median | Best COSTWAY |
|---|---|---|---|---|
| Single hose portable ACs (1,044) | 20 | 4 | CEER 7.3 | JHS- |
Dehumidifiers
Of the 4 COSTWAY dehumidifiers with a class big enough to compare, 3 file a higher IEF than the class median and 1 falls below it.
| DOE class | COSTWAY models | Above median | Class median | Best COSTWAY |
|---|---|---|---|---|
| Portable dehumidifiers up to 25 pints/day (253) | 3 | 2 | IEF 1.7 | ES10810US- |
| Portable dehumidifiers, 25 to 50 pints/day (296) | 1 | 1 | IEF 1.91 | ES10808US- |
2 file 335 pints/day, far above every other portable dehumidifier (the others in its class file 60 to 105), so they're left out of the class comparison and the cost figures.
A higher CEER means more cooling per watt. A higher IEF means more water removed per kWh.
Who makes COSTWAY portable ACs and dehumidifiers?
DOE's database has no manufacturer field, so the evidence is whose model number each unit is filed under and which other brands file the same unit.
COSTWAY shares 2 units with 16 other brands. Its other 24 basic models are filed by COSTWAY alone. Brands it shares with, and how many units each:
- Antarctic Star2
- Auseo2
- COWSAR2
- Electactic2
- Fornido2
- GARVEE2
- Joy Pebble2
- Kismile2
- KISSAIR2
- KNDKO2
- NEPO2
- NINGPU2
- R.W.FLAME2
- WAA2
- Xbeauty2
- ZAFRO2
| Basic model | COSTWAY model | Number belongs to | Brands |
|---|---|---|---|
| NPP- | FP11174US | No known prefix | 17 |
| NPP- | FP11175US | No known prefix | 17 |
How much do COSTWAY models cost to run?
While cooling, COSTWAY portable ACs draw about 794 to 1,333 W (certified SACC divided by CEER). That's 14¢ to 24¢ an hour, or $34.59 to $58.11 for 30 days at 8 hours a day. The lowest is COSTWAY FP11174US (5,000 BTU/h SACC, CEER 6.3) and the highest COSTWAY JHS-A020BA-10KR-D (10,800 BTU/h SACC, CEER 8.1).
Running nonstop at DOE's test conditions, the 4 COSTWAY dehumidifiers with both figures use 2.78 to 9.99 kWh a day. That's about 51¢ to $1.81 a day, or $15.16 to $54.41 for 30 days. The lowest is COSTWAY ES10809US-WH (8 pints/day, IEF 1.36) and the highest COSTWAY ES10808US-WH (42 pints/day, IEF 1.99).
Real use cycles on and off with the humidity, so the dehumidifier figures are the upper end for a day of nonstop running.
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.
Questions about COSTWAY
- Is COSTWAY a good dehumidifier brand?
- How its 4 dehumidifiers with a class to compare compare on efficiency with their DOE class is above. All 6 are filed under COSTWAY alone. We don't test reliability, noise or build quality, so we can't rank brands on those. How we compare models.
- Does COSTWAY make a 50 pint dehumidifier?
- No current DOE record shows one as of 2026-11-03. Its largest, COSTWAY ES10808US-WH, certifies 42 pints/day under the 2019 DOE test. Boxes that quote the older 80°F test read higher for the same unit. By DOE class: 3 in the up to 25 pints/day class and 1 in the 25 to 50 pints/day class. How the 2019 test changed pint ratings.
- Which COSTWAY dehumidifier is the most efficient for its size?
- COSTWAY ES10810US-WH and COSTWAY ES10811US-WH tie at IEF 1.78: higher than 173 of the 253 in its DOE class (portable dehumidifiers up to 25 pints/day). At the other end is COSTWAY ES10809US-WH, at IEF 1.36, higher than 75 of the 253 in its class.
- Is COSTWAY the same as Antarctic Star?
- For 2 units, yes: both file them under the same DOE basic model (NPP-05C/X1E and NPP-06H/X1E). The other 24 COSTWAY basic models aren't filed by Antarctic Star. Compare the 17 brands of NPP-05C/X1E. Compare the 17 brands of NPP-06H/X1E.