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      6,000 BTU (SACC) single-hose portable air conditioner

      AUX A039-10K

      Below average efficiency for its size: a CEER of 6.5 beats 1% of the certified 6,000 BTU portable air conditioners.

      The AUX A039-10K delivers 6,000 BTU of real cooling (SACC), enough for about 150-250 sq ft, draws about 923 watts and costs about $125 a year to run at typical U.S. use and prices. A window unit that cools as much costs about $54 a year.

      CEER
      6.5 Combined efficiency, higher is better
      Below average · beats 1%
      Real cooling
      6,000 BTU/h (SACC)For about 150-250 sq ft
      Energy use
      692 kWh/yrAbout 923 W, at 750 hours a year
      Design
      One hose Uses room air for its condenser

      A good fit if…

      • You want a certified 6,000 BTU (SACC) single-hose portable air conditioner at a typical efficiency level.

      Think twice if…

      • Running cost matters most - its CEER is below average for 6,000 BTU portable air conditioners.
      • 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.

      Calculate my running costCheck the size for my room

      Details

      Certified ratings6,000 BTU SACC, 6.5 CEER
      Performance
      Real cooling capacity (SACC)Seasonally adjusted cooling capacity: what the unit delivers in the DOE test, after the heat it lets back in6,000 BTU/h
      CEERCombined energy efficiency ratio, includes standby power6.5
      Power drawSACC divided by CEERAbout 923 W
      Yearly energy use750 hours of cooling a year692 kWh
      Design
      Hose designSingle-duct (one hose)
      HeatingNo, cooling only
      CompressorSingle speed
      Water removalGravity drain (hose to a floor drain or bucket)
      Certification
      Certified model numbers1 (1 basic model)
      Brands1
      Size class6,000 BTU
      Model numbers with these ratings1 from 1 brand

      These model numbers are certified with the same capacity, efficiency, hose design, heating, drain type and compressor as the AUX A039-10K.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.

      • AUXA039-10K
      How it compares with the other 6,000 BTU portable units11 rating profiles
      • CEER (class median 6.6)6.5, no ties
      • Yearly cost vs. class median ($123)$2 more
      • Efficiency rank among 11 rating profiles#10
      • Models in the class with two hoses0%
      • Window units with similar cooling (median CEER 15.1)$54 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$16-$249

      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$239$103
      Houston, TX140016.0$207$89
      Miami, FL175015.4$249$107
      Atlanta, GA77515.1$108$46
      New York, NY52528.4$137$59
      Chicago, IL47519.0$83$36
      Denver, CO35016.6$53$23
      Seattle, WA12514.2$16$7
      Ranked around it in the 6,000 BTU class#10 of 11
      #ModelBTU (SACC)CEERPer year
      76,300 BTU single-hose portable AC, 6.6 CEER6,3006.6$129
      86,000 BTU single-hose portable AC, 6.6 CEER6,0006.6$123
      96,000 BTU single-hose portable AC with heat, 6.6 CEER6,0006.6$123
      10AUX A039-10K6,0006.5$125
      11Pelonis PAP10R1BWT5,8006.4$123
      Questions6
      What size room does the AUX A039-10K cool?
      6,000 BTU of real cooling (SACC) suits about 150 to 250 sq ft with normal sun and two people (about 135-225 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 AUX A039-10K use, and what does it cost to run?
      About 923 watts at full power (6,000 BTU/h divided by its CEER of 6.5), roughly 8.0 amps if it runs on 115 V. At 750 hours a year and 18.0¢/kWh that is about $125, which is $2 more than the typical certified 6,000 BTU portable unit ($123). Its CEER beats 1% of the 458 certified models in its size class.
      Is a one-hose portable air conditioner a problem?
      It is the common design: 100% of the certified 6,000 BTU models have one hose, with a median of 6.6 CEER. The top-ranked 6,450 BTU single-hose portable AC, 7.4 CEER reaches 7.4 CEER.
      How does the AUX A039-10K 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 AUX A039-10K also heat the room?
      No, it only cools. 18 of the 458 certified 6,000 BTU portable models can also heat if you want one unit for the year.
      Is the AUX A039-10K as efficient as a window air conditioner?
      No. The 9 ENERGY STAR certified window units that cool about as much (within 15% of 6,000 BTU) have a median CEER of 15.1, against 6.5 here, and the best reach 16.0. At 750 hours a year a window unit with that median would cost about $54, $71 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.

      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 AUX A039-10K
      2. How you use it
      Per year
      $195
      Per month of use
      $35
      Per day
      $1.18
      Per hour
      14.8¢
      Power draw
      923 W

      Electricity used: 1,218 kWh a yearAn old 9 CEER unit of the same size would cost $141

      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 AUX A039-10K.

      ModelCEERCompared with this one
      6,000 BTU single-hose portable AC with heat, 6.6 CEER6.60.1 CEER higher, also heats, self-evaporating
      Pelonis PAP10R1BWT6.40.1 CEER lower, 200 BTU less cooling, self-evaporating
      6,000 BTU single-hose portable AC, 6.6 CEER6.60.1 CEER higher, self-evaporating
      6,300 BTU single-hose portable AC, 6.6 CEER6.60.1 CEER higher, 300 BTU more cooling, self-evaporating
      6,500 BTU single-hose portable AC, 6.7 CEER6.70.2 CEER higher, 500 BTU more cooling, self-evaporating

      See all 11 6,000 BTU 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.