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      6,000 BTU mini-split heat pump · D5F Series

      Arcoaire D5CSHAH06AAK

      Excellent cooling and heating efficiency for a 6,000 BTU mini-split heat pump, and certified for cold climates.

      Ranks #19 of 42 6,000 BTU mini-splits for cooling efficiency, and costs about $132 a year to run in a mixed climate like Atlanta.

      SEER2
      25.7 Cooling efficiency over a season
      Excellent · beats 90%
      HSPF2
      14.8 Heating efficiency over a season
      Excellent · beats 99%
      EER2
      18.0 Cooling efficiency on a 95°F day
      Excellent · beats 99%
      Heat at 5°F
      8,100 BTU/h110% of its 47°F output
      Excellent · beats 93%

      A good fit if…

      • You want low cooling bills - its SEER2 beats 90% of mini-splits.
      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 8,100 BTU/h at 5°F.
      • It will heat most of the year - its HSPF2 beats 99% of mini-splits.
      • You want steady temperatures and quiet running - the compressor varies its speed.

      Think twice if…

      • Nothing stands out - its ratings have no weak spot for its class.

      Calculate my running cost

      Details

      Specifications6,000 BTU, R-454B
      General
      BrandArcoaire
      Also sold asComfortmaker, Day & Night, Heil, Keeprite, Kenmore, Midea, Tempstar, Smart Comfort, Airquest, LPS Legacy, Viessmann
      Outdoor unit modelD5CSHAH06AAK
      SeriesD5F Series
      TypeMini-split heat pump
      Nominal size6,000 BTU
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-454B
      Connected (smart) capableNo
      On the market sinceNovember 15, 2018
      Last certifiedMay 28, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better25.7 (range 21.5-25.7)
      EER2Efficiency at 95°F outdoors14.5-18.0
      Cooling capacity6,000-6,500 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better12.0-14.8
      Capacity at 47°F7,000-8,000 BTU/h
      Capacity at 17°F7,000-8,700 BTU/h
      Capacity at 5°F7,700-8,100 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.39-2.40
      ENERGY STAR cold climateYes
      Heating output as it gets colder110% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with D5FSHAH06XAK at the standard test temperatures, in BTU/h:

      Certified matchups35 indoor units

      The same outdoor unit scores differently with each indoor unit. Ask your installer for the AHRI reference number of the exact system you are quoted.

      Indoor unitSEER2EER2HSPF2Heat @5°FAHRI ref.
      D5FSHAH06XAK ARCOAIRE · cold climate25.718.014.87,700215324102
      D5FSHAH06XAK COMFORTMAKER · cold climate25.718.014.87,700215324175
      D5FSHAH06XAK DAY & NIGHT · cold climate25.718.014.87,700215324248
      D5FSHAH06XAK HEIL · cold climate25.718.014.87,700215324321
      D5FSHAH06XAK KEEPRITE · cold climate25.718.014.87,700215324394
      D5FSHAH06XAK KENMORE · cold climate25.718.014.87,700215324467
      D5FSHAH06XAK MIDEA · cold climate25.718.014.87,700215324540
      D5FSHAH06XAK TEMPSTAR · cold climate25.718.014.87,700215324613
      D5FSHAH06XAK SMART COMFORT · cold climate25.718.014.87,700215324686
      D5FSHAH06XAK AIRQUEST · cold climate25.718.014.87,700215324759
      D5FSHAH06XAK LPS Legacy · cold climate25.718.014.87,700215324832
      D5FSHAH06XAK Viessmann · cold climate25.718.014.87,700217178781
      D5FSOAH06XAK ARCOAIRE · cold climate22.015.212.08,100215324103
      D5FSOAH06XAK COMFORTMAKER · cold climate22.015.212.08,100215324176
      D5FSOAH06XAK DAY & NIGHT · cold climate22.015.212.08,100215324249
      D5FSOAH06XAK HEIL · cold climate22.015.212.08,100215324322
      D5FSOAH06XAK KEEPRITE · cold climate22.015.212.08,100215324395
      D5FSOAH06XAK KENMORE · cold climate22.015.212.08,100215324468
      D5FSOAH06XAK MIDEA · cold climate22.015.212.08,100215324541
      D5FSOAH06XAK TEMPSTAR · cold climate22.015.212.08,100215324614
      D5FSOAH06XAK SMART COMFORT · cold climate22.015.212.08,100215324687
      D5FSOAH06XAK AIRQUEST · cold climate22.015.212.08,100215324760
      D5FSOAH06XAK LPS Legacy · cold climate22.015.212.08,100215324833
      D5FSOAH06XAK Viessmann · cold climate22.015.212.08,100217178782
      D5FSDAH06XAK ARCOAIRE · cold climate21.514.513.87,800215324104
      D5FSDAH06XAK COMFORTMAKER · cold climate21.514.513.87,800215324177
      D5FSDAH06XAK DAY & NIGHT · cold climate21.514.513.87,800215324250
      D5FSDAH06XAK HEIL · cold climate21.514.513.87,800215324323
      D5FSDAH06XAK KEEPRITE · cold climate21.514.513.87,800215324396
      D5FSDAH06XAK KENMORE · cold climate21.514.513.87,800215324469
      D5FSDAH06XAK MIDEA · cold climate21.514.513.87,800215324542
      D5FSDAH06XAK TEMPSTAR · cold climate21.514.513.87,800215324615
      D5FSDAH06XAK SMART COMFORT · cold climate21.514.513.87,800215324688
      D5FSDAH06XAK AIRQUEST · cold climate21.514.513.87,800215324761
      D5FSDAH06XAK LPS Legacy · cold climate21.514.513.87,800215324834
      Yearly running cost in 10 large cities$119-$316

      At each state's average electricity price and the city's typical heating and cooling hours.

      Questions5
      What is the SEER2 rating of the Arcoaire D5CSHAH06AAK?
      The Arcoaire D5CSHAH06AAK is rated at up to 25.7 SEER2 and 18.0 EER2 for cooling and up to 14.8 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 35 certified matchups SEER2 ranges from 21.5-25.7.
      Is the Arcoaire D5CSHAH06AAK good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 8,100 BTU/h at 5°F with a COP of 2.40, so it is still 2.4 times as efficient as electric resistance heat at that temperature.
      How much does the Arcoaire D5CSHAH06AAK cost to run per year?
      At its rated efficiency it costs about $119-$316 a year in electricity in large U.S. cities, depending on climate and local rates - for example $146 in Phoenix and $264 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
      Which indoor units work with the Arcoaire D5CSHAH06AAK?
      ENERGY STAR lists 35 certified combinations for this outdoor unit. The highest-rated ones use ARCOAIRE D5FSHAH06XAK, COMFORTMAKER D5FSHAH06XAK, DAY & NIGHT D5FSHAH06XAK.
      What refrigerant does the Arcoaire D5CSHAH06AAK use?
      It uses R-454B.

      Running cost and savings

      Pre-filled with this model. Pick your city and what you heat with today; everything else is optional.

      Heat pump $145/yrYou save $205/yrSee details ↓
      1. Where you live
      Adjust heating and cooling hours

      Filled in from your city's climate. Change them if you run the system much more or less than usual.

      2. The heat pump Arcoaire D5CSHAH06AAK
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $145
      Current system, per year
      $350
      You save per year
      $205
      Payback
      12.2 years
      Net after 10 years
      -$451

      Cooling $89Heating $56Electricity used: 906 kWhSaved vs. a minimum-efficiency heat pump: $125

      Estimates use the unit's rated SEER2 and HSPF2, full-load hours derived from NOAA 1991-2020 degree days, average residential electricity prices from the U.S. EIA (12 months to July 2026) and fuel prices from EIA (2025 for natural gas, week of 2026-10-05 for propane and heating oil). Very cold days that need backup heat are not modelled. Federal minimum for comparison: 14.3 SEER2 / 7.5 HSPF2.

      Similar 6,000 BTU models

      See all 42 6,000 BTU mini-splits, ranked

      Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of May 28, 2026. How we use the data.