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      24,000 BTU mini-split heat pump · D5F Series

      Arcoaire D5CSRAH24AAK

      Average cooling efficiency and very good heating efficiency for a 24,000 BTU mini-split heat pump, and certified for cold climates.

      Ranks #86 of 430 24,000 BTU mini-splits for cooling efficiency, and costs about $558 a year to run in a mixed climate like Atlanta.

      SEER2
      23.1 Cooling efficiency over a season
      Average · beats 66%
      HSPF2
      11.7 Heating efficiency over a season
      Very good · beats 87%
      EER2
      14.0 Cooling efficiency on a 95°F day
      Very good · beats 82%
      Heat at 5°F
      19,600 BTU/h78% of its 47°F output
      Excellent · beats 98%

      A good fit if…

      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 19,600 BTU/h at 5°F.
      • It will heat most of the year - its HSPF2 beats 87% of mini-splits.
      • You want steady temperatures and quiet running - the compressor varies its speed.
      • You want a choice of indoor units - 56 certified pairings.

      Think twice if…

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

      Calculate my running cost

      Details

      Specifications24,000 BTU, R-454B
      General
      BrandArcoaire
      Also sold asComfortmaker, Day & Night, Heil, Keeprite, Kenmore, Midea, Smart Comfort, Tempstar, Airquest, LPS Legacy, Grandaire
      Outdoor unit modelD5CSRAH24AAK
      SeriesD5F Series
      TypeMini-split heat pump
      Nominal size24,000 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 better23.1 (range 19.0-23.1)
      EER2Efficiency at 95°F outdoors11.7-14.0
      Cooling capacity24,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better9.0-11.7
      Capacity at 47°F24,400-25,000 BTU/h
      Capacity at 17°F17,600-22,400 BTU/h
      Capacity at 5°F18,000-19,600 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.20-2.54
      ENERGY STAR cold climateYes
      Heating output as it gets colder78% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with D5FSHAH24XAK at the standard test temperatures, in BTU/h:

      Certified matchups56 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.
      D5FSHAH24XAK ARCOAIRE · cold climate23.114.011.719,600217454955
      D5FSHAH24XAK COMFORTMAKER · cold climate23.114.011.719,600217454956
      D5FSHAH24XAK DAY & NIGHT · cold climate23.114.011.719,600217454957
      D5FSHAH24XAK HEIL · cold climate23.114.011.719,600217454958
      D5FSHAH24XAK KEEPRITE · cold climate23.114.011.719,600217454959
      D5FSHAH24XAK KENMORE · cold climate23.114.011.719,600217454960
      D5FSHAH24XAK MIDEA · cold climate23.114.011.719,600217454961
      D5FSHAH24XAK TEMPSTAR · cold climate23.114.011.719,600217454962
      D5FSHAH24XAK SMART COMFORT · cold climate23.114.011.719,600217454963
      D5FSHAH24XAK AIRQUEST · cold climate23.114.011.719,600217454964
      D5FSHAH24XAK LPS Legacy · cold climate23.114.011.719,600217454965
      D5FSCAH24XAK ARCOAIRE · cold climate22.112.010.518,500215324150
      D5FSCAH24XAK COMFORTMAKER · cold climate22.112.010.518,500215324223
      D5FSCAH24XAK DAY & NIGHT · cold climate22.112.010.518,500215324296
      D5FSCAH24XAK HEIL · cold climate22.112.010.518,500215324369
      D5FSCAH24XAK KEEPRITE · cold climate22.112.010.518,500215324442
      D5FSCAH24XAK KENMORE · cold climate22.112.010.518,500215324515
      D5FSCAH24XAK MIDEA · cold climate22.112.010.518,500215324588
      D5FSCAH24XAK TEMPSTAR · cold climate22.112.010.518,500215324661
      D5FSCAH24XAK SMART COMFORT · cold climate22.112.010.518,500215324734
      D5FSCAH24XAK AIRQUEST · cold climate22.112.010.518,500215324807
      D5FSCAH24XAK LPS Legacy · cold climate22.112.010.518,500215324880
      D5FCFAH24XAK ARCOAIRE · cold climate21.212.211.118,600215324151
      D5FCFAH24XAK COMFORTMAKER · cold climate21.212.211.118,600215324224
      D5FCFAH24XAK DAY & NIGHT · cold climate21.212.211.118,600215324297
      D5FCFAH24XAK HEIL · cold climate21.212.211.118,600215324370
      D5FCFAH24XAK KEEPRITE · cold climate21.212.211.118,600215324443
      D5FCFAH24XAK KENMORE · cold climate21.212.211.118,600215324516
      D5FCFAH24XAK MIDEA · cold climate21.212.211.118,600215324589
      D5FCFAH24XAK TEMPSTAR · cold climate21.212.211.118,600215324662
      D5FCFAH24XAK SMART COMFORT · cold climate21.212.211.118,600215324735
      D5FCFAH24XAK AIRQUEST · cold climate21.212.211.118,600215324808
      D5FCFAH24XAK LPS Legacy · cold climate21.212.211.118,600215324881
      D5FSAAH24XBK · cold climate19.811.79.018,000215318964
      D5FSAAH24XBK · cold climate19.811.79.018,000215319076
      D5FSAAH24XBK · cold climate19.811.79.018,000215318908
      D5FSAAH24XBK · cold climate19.811.79.018,000215318992
      D5FSAAH24XBK · cold climate19.811.79.018,000215319020
      D5FSAAH24XBK · cold climate19.811.79.018,000215319160
      D5FSAAH24XBK · cold climate19.811.79.018,000215319104
      D5FSAAH24XBK · cold climate19.811.79.018,000215319132
      D5FSAAH24XBK · cold climate19.811.79.018,000215319188
      D5FSAAH24XBK · cold climate19.811.79.018,000215319216
      D5FSAAH24XBK · cold climate19.811.79.018,000215318936
      D5FSAAH24XBK · cold climate19.811.79.018,000215319048
      D5FSDAH24XHK ARCOAIRE · cold climate19.012.511.019,000215324152
      D5FSDAH24XHK COMFORTMAKER · cold climate19.012.511.019,000215324225
      D5FSDAH24XHK DAY & NIGHT · cold climate19.012.511.019,000215324298
      D5FSDAH24XHK HEIL · cold climate19.012.511.019,000215324371
      D5FSDAH24XHK KEEPRITE · cold climate19.012.511.019,000215324444
      D5FSDAH24XHK KENMORE · cold climate19.012.511.019,000215324517
      D5FSDAH24XHK MIDEA · cold climate19.012.511.019,000215324590
      D5FSDAH24XHK SMART COMFORT · cold climate19.012.511.019,000215324736
      D5FSDAH24XHK TEMPSTAR · cold climate19.012.511.019,000215324663
      D5FSDAH24XHK AIRQUEST · cold climate19.012.511.019,000215324809
      D5FSDAH24XHK LPS Legacy · cold climate19.012.511.019,000215324882
      Yearly running cost in 10 large cities$489-$1,341

      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 D5CSRAH24AAK?
      The Arcoaire D5CSRAH24AAK is rated at up to 23.1 SEER2 and 14.0 EER2 for cooling and up to 11.7 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 56 certified matchups SEER2 ranges from 19.0-23.1.
      Is the Arcoaire D5CSRAH24AAK good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 19,600 BTU/h at 5°F with a COP of 2.54, so it is still 2.5 times as efficient as electric resistance heat at that temperature.
      How much does the Arcoaire D5CSRAH24AAK cost to run per year?
      At its rated efficiency it costs about $489-$1,341 a year in electricity in large U.S. cities, depending on climate and local rates - for example $607 in Phoenix and $1,124 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 D5CSRAH24AAK?
      ENERGY STAR lists 56 certified combinations for this outdoor unit. The highest-rated ones use ARCOAIRE D5FSHAH24XAK, COMFORTMAKER D5FSHAH24XAK, DAY & NIGHT D5FSHAH24XAK.
      What refrigerant does the Arcoaire D5CSRAH24AAK 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 $605/yrYou save $649/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 D5CSRAH24AAK
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $605
      Current system, per year
      $1,254
      You save per year
      $649
      Payback
      13.9 years
      Net after 10 years
      -$2,512

      Cooling $366Heating $239Electricity used: 3,781 kWhSaved vs. a minimum-efficiency heat pump: $359

      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 24,000 BTU models

      See all 430 24,000 BTU mini-splits, ranked

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