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5,500 BTU (SACC) single-hose portable air conditioner and inverter

Antarctic Star AC7290-10K

Excellent efficiency for its size: a CEER of 7.9 beats 99% of the certified 5,000 BTU or less portable air conditioners.

The Antarctic Star AC7290-10K delivers 5,500 BTU of real cooling (SACC), enough for about 100-150 sq ft, draws about 696 watts and costs about $94 a year to run at typical U.S. use and prices. A window unit that cools as much costs about $52 a year.

CEER
7.9 Combined efficiency, higher is better
Excellent · beats 99%
Real cooling
5,500 BTU/h (SACC)For about 100-150 sq ft
Energy use
522 kWh/yrAbout 696 W, at 750 hours a year
Design
One hose Uses room air for its condenser

A good fit if…

  • You want low bills - its CEER beats 99% of the 461 certified 5,000 BTU or less portable models.
  • You want steadier, quieter running - its variable-speed compressor slows down instead of cycling.

Think twice if…

  • You want the most efficient design - one-hose units pull warm air in through gaps; dual-hose units lead the efficiency ranks.
  • You also need heat - it cools only.
  • You want no drain to deal with - it uses a gravity drain you must run to a floor drain or a bucket.
  • You need to cool more than a very small room - this size covers about 100-150 sq ft at most.

Calculate my running costCheck the size for my room

Details

Certified ratings5,500 BTU SACC, 7.9 CEER
Performance
Real cooling capacity (SACC)Seasonally adjusted cooling capacity: what the unit delivers in the DOE test, after the heat it lets back in5,500 BTU/h
Full-load cooling (SACC)At maximum compressor speed10,100 BTU/h
CEERCombined energy efficiency ratio, includes standby power7.9
Power drawSACC divided by CEERAbout 696 W
Yearly energy use750 hours of cooling a year522 kWh
Design
Hose designSingle-duct (one hose)
HeatingNo, cooling only
CompressorVariable speed (inverter)
Water removalGravity drain (hose to a floor drain or bucket)
Certification
Certified model numbers6 (6 basic models)
Brands6
Size class5,000 BTU and under
Model numbers with these ratings6 from 6 brands

These model numbers are certified with the same capacity, efficiency, hose design, heating, drain type and compressor as the Antarctic Star AC7290-10K.They may be the same unit sold under several brands, or different products that test the same: the DOE data has no dimensions or noise figures, so check those with the maker. Ratings within about 2% in capacity and 0.3 in CEER are treated as the same; a model whose own rating differs a little shows it in brackets.

How it compares with the other 5,000 BTU or less portable units19 rating profiles
  • CEER (class median 6.2)7.9, no ties
  • Yearly cost vs. class median ($109)$15 less
  • Efficiency rank among 19 rating profiles#3
  • Models in the class with two hoses0%
  • Window units with similar cooling (median CEER 14.4)$52 a year

Compared with every DOE-certified portable unit in the same size class (SACC). Each model number counts once. Yearly cost at 750 hours and 18.0¢/kWh.

Yearly running cost by city$12-$188

This unit at each city's cooling hours and state electricity price, against a window unit that cools as much.

CityHours¢/kWhPer yearWindow unit
Phoenix, AZ167515.5$180$99
Houston, TX140016.0$156$86
Miami, FL175015.4$188$103
Atlanta, GA77515.1$81$45
New York, NY52528.4$104$57
Chicago, IL47519.0$63$34
Denver, CO35016.6$40$22
Seattle, WA12514.2$12$7
Ranked around it in the 5,000 BTU and under class#3 of 19
#ModelBTU (SACC)CEERPer year
1Foshan Hanyang HYAC-TG74,15013.4$42
2Foshan Hanyang KOW60A4,85010.9$60
3Antarctic Star AC7290-10K5,5007.9$94
45,300 BTU single-hose portable AC, 7.1 CEER5,3007.1$101
55,250 BTU single-hose portable AC, 6.6 CEER5,2506.6$108
6LG LP0526PGF5,0006.6$102
Questions7
What size room does the Antarctic Star AC7290-10K cool?
5,500 BTU of real cooling (SACC) suits about 100 to 150 sq ft with normal sun and two people (about 90-135 sq ft if very sunny), by the ENERGY STAR floor-area table. Size by SACC, not the larger BTU on the box.
How many watts does the Antarctic Star AC7290-10K use, and what does it cost to run?
About 696 watts at full power (5,500 BTU/h divided by its CEER of 7.9), roughly 6.1 amps if it runs on 115 V. At 750 hours a year and 18.0¢/kWh that is about $94, which is $15 less than the typical certified 5,000 BTU or less portable unit ($109). Its inverter compressor slows down once the room is cool, so real use is often lower. Its CEER beats 99% of the 461 certified models in its size class.
Is a one-hose portable air conditioner a problem?
It is the common design: 100% of the certified 5,000 BTU or less models have one hose, with a median of 6.2 CEER. The top-ranked Foshan Hanyang HYAC-TG7 reaches 13.4 CEER.
How does the Antarctic Star AC7290-10K handle the water it removes?
It drains by gravity: you run a hose from the unit to a floor drain, a sink or a bucket that stays lower than the unit. Do not coil the hose or lift it above the outlet.
Can the Antarctic Star AC7290-10K also heat the room?
No, it only cools. 6 of the 461 certified 5,000 BTU or less portable models can also heat if you want one unit for the year.
Is the Antarctic Star AC7290-10K as efficient as a window air conditioner?
No. The 12 ENERGY STAR certified window units that cool about as much (within 15% of 5,500 BTU) have a median CEER of 14.4, against 7.9 here, and the best reach 16.0. At 750 hours a year a window unit with that median would cost about $52, $43 less than this one. ENERGY STAR window units are the more efficient part of the window market, so the gap to an average window unit is smaller. A portable unit makes sense when a window unit will not fit or is not allowed.
Which model numbers have the same ratings as the Antarctic Star AC7290-10K?
6 certified model numbers from 6 brands share these ratings: capacity, CEER, hose design, heating, drain type and compressor. They may be the same unit under different brands, or different products that test the same; the DOE data does not include dimensions or noise, so check those with the maker. The full list is on this page.

Running cost calculator

Pre-filled with these ratings. Pick your state and how many hours you run it, or see what portable units cost to run in every state.

1. The air conditioner Antarctic Star AC7290-10K
2. How you use it
Per year
$147
Per month of use
$27
Per day
$0.89
Per hour
11.1¢
Power draw
696 W

Electricity used: 919 kWh a yearAn old 9 CEER unit of the same size would cost $129

Power draw is capacity divided by CEER, which already includes standby power. Inverter units often run below full power, so real use can be lower. Electricity prices: U.S. EIA residential averages (12 months to July 2026). Days a year start from your state's cooling degree days (NOAA 1991-2020 normals).

Closest alternatives

Rating profiles with a similar CEER in the same size class, and what sets each one apart from the Antarctic Star AC7290-10K.

ModelCEERCompared with this one
5,300 BTU single-hose portable AC, 7.1 CEER7.10.8 CEER lower, 200 BTU less cooling, single speed, self-evaporating
5,250 BTU single-hose portable AC, 6.6 CEER6.61.3 CEER lower, 250 BTU less cooling, single speed, self-evaporating
LG LP0526PGF6.61.3 CEER lower, 500 BTU less cooling, single speed, self-evaporating
Frigidaire FHPC082AC16.31.6 CEER lower, single speed, self-evaporating
BLACK+DECKER BPACT08WT6.21.7 CEER lower, 200 BTU less cooling, single speed, self-evaporating

See all 19 5,000 BTU or less portable air conditioners, ranked

Before you buy

The Department of Energy lists every certified model, including some no longer sold: check availability before you buy. Source: U.S. Department of Energy, Compliance Certification Database (portable air conditioners), updated 2026-10-14. How we use the data.