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      4-ton central heat pump · Crossover Heat Pump

      Tempstar D5CURAH48AAK+KSAIC0701230

      Below average cooling and heating efficiency for a 4-ton central heat pump, and certified for cold climates.

      Ranks #284 of 319 4 ton central heat pumps for cooling efficiency, and costs about $1,556 a year to run in a mixed climate like Atlanta.

      SEER2
      15.5 Cooling efficiency over a season
      Below average · beats 15%
      HSPF2
      8.1 Heating efficiency over a season
      Below average · beats 20%
      EER2
      9.0 Cooling efficiency on a 95°F day
      Below average · beats 4%
      Heat at 5°F
      36,400 BTU/h77% of its 47°F output
      Below average · beats 12%

      A good fit if…

      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 36,400 BTU/h at 5°F.
      • You want steady temperatures and quiet running - the compressor varies its speed.

      Think twice if…

      • Cooling cost matters most - its SEER2 is below average for central heat pumps.
      • You mainly need heat - its HSPF2 is below average for central heat pumps.

      Calculate my running cost

      Details

      Specifications4 ton, R-454B
      General
      BrandTempstar
      Also sold asKeeprite, Day & Night, Comfortmaker, Arcoaire, Airquest, Heil, Smart Comfort
      Outdoor unit modelD5CURAH48AAK+KSAIC0701230
      SeriesCrossover Heat Pump
      TypeCentral heat pump
      Nominal size4 ton
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-454B
      Connected (smart) capableNo
      On the market sinceJune 27, 2024
      Last certifiedJuly 17, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better15.5 (range 15.5)
      EER2Efficiency at 95°F outdoors9.0
      Cooling capacity47,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better8.1
      Capacity at 47°F47,000 BTU/h
      Capacity at 17°F31,000 BTU/h
      Capacity at 5°F36,400 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater1.85
      ENERGY STAR cold climateYes
      Heating output as it gets colder77% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with FTMA5B60L0D at the standard test temperatures, in BTU/h:

      Certified matchups8 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.
      FTMA5B60L0D · cold climate15.59.08.136,400218485640
      FTMA5B60L0D · cold climate15.59.08.136,400218485638
      FTMA5B60L0D · cold climate15.59.08.136,400218485635
      FTMA5B60L0D · cold climate15.59.08.136,400218485633
      FTMA5B60L0D · cold climate15.59.08.136,400218485631
      FTMA5B60L0D · cold climate15.59.08.136,400218485630
      FTMA5B60L0D · cold climate15.59.08.136,400218485628
      FTMA5B60L0D · cold climate15.59.08.136,400218680925
      Yearly running cost in 10 large cities$1,423-$3,693

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

      Questions5
      What is the SEER2 rating of the Tempstar D5CURAH48AAK+KSAIC0701230?
      The Tempstar D5CURAH48AAK+KSAIC0701230 is rated at up to 15.5 SEER2 and 9.0 EER2 for cooling and up to 8.1 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
      Is the Tempstar D5CURAH48AAK+KSAIC0701230 good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 36,400 BTU/h at 5°F with a COP of 1.85, so it is still 1.9 times as efficient as electric resistance heat at that temperature.
      How much does the Tempstar D5CURAH48AAK+KSAIC0701230 cost to run per year?
      At its rated efficiency it costs about $1,423-$3,693 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,739 in Phoenix and $3,073 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 Tempstar D5CURAH48AAK+KSAIC0701230?
      ENERGY STAR lists 8 certified combinations for this outdoor unit. The highest-rated one uses FTMA5B60L0D.
      What refrigerant does the Tempstar D5CURAH48AAK+KSAIC0701230 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 $1,717/yrYou save $706/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 Tempstar D5CURAH48AAK+KSAIC0701230
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $1,717
      Current system, per year
      $2,423
      You save per year
      $706
      Payback
      24.8 years
      Net after 10 years
      -$10,438

      Cooling $1,067Heating $650Electricity used: 10,733 kWhSaved vs. a minimum-efficiency heat pump: $142

      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.

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      See all 319 4 ton central heat pumps, ranked

      Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of July 17, 2026. How we use the data.