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

      Mitsubishi Electric PUZ-HA24NHA1

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

      Ranks #215 of 430 24,000 BTU mini-splits for cooling efficiency, and costs about $682 a year to run in a mixed climate like Atlanta.

      SEER2
      21.6 Cooling efficiency over a season
      Average · beats 41%
      HSPF2
      10.0 Heating efficiency over a season
      Average · beats 43%
      EER2
      14.0 Cooling efficiency on a 95°F day
      Very good · beats 82%
      Heat at 5°F
      26,000 BTU/h93% of its 47°F output
      Below average · beats 27%

      A good fit if…

      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 26,000 BTU/h at 5°F.
      • You want steady temperatures and quiet running - the compressor varies its speed.
      • You want a choice of indoor units - 18 certified pairings.

      Think twice if…

      • You want the newest refrigerant - it uses R-410A, which is being phased down.

      Calculate my running cost

      Details

      Specifications24,000 BTU, R-410A
      General
      BrandMitsubishi Electric
      Also sold asTrane / Mitsubishi Electric
      Outdoor unit modelPUZ-HA24NHA1
      SeriesP-Series
      TypeMini-split heat pump
      Nominal size24,000 BTU
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-410A
      Connected (smart) capableNo
      On the market sinceDecember 1, 2022
      Last certifiedMarch 31, 2025
      Cooling
      SEER2Seasonal efficiency, higher is better21.6 (range 16.2-21.6)
      EER2Efficiency at 95°F outdoors11.3-14.0
      Cooling capacity23,000-24,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better9.2-10.0
      Capacity at 47°F28,000 BTU/h
      Capacity at 17°F17,200-18,000 BTU/h
      Capacity at 5°F25,000-26,000 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater1.80-1.90
      ENERGY STAR cold climateYes
      Heating output as it gets colder93% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with PLA-A24EA at the standard test temperatures, in BTU/h:

      Certified matchups18 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.
      PLA-A24EA · cold climate21.614.010.026,000211273264
      TPLA0A0241EA70A Trane / Mitsubishi Electric · cold climate21.614.010.026,000206717836
      PLA-A24EA · cold climate21.614.010.026,000210446100
      TPLA0A0241EA70A Trane / Mitsubishi Electric · cold climate21.614.010.026,000215560618
      PKA-A24KA · cold climate19.512.69.526,000211259269
      TPKA0A0241KA70A Trane / Mitsubishi Electric · cold climate19.512.69.526,000206717835
      TPKA0A0241KA70A Trane / Mitsubishi Electric · cold climate19.512.69.526,000215560620
      PKA-A24KA · cold climate19.512.69.526,000215560619
      PVA-A24AA · cold climate19.011.49.426,000211259272
      TPVA0A0241AA70A Trane / Mitsubishi Electric · cold climate19.011.49.426,000206717837
      PVA-A24AA · cold climate19.011.49.426,000210446125
      TPVA0A0241AA70A Trane / Mitsubishi Electric · cold climate19.011.49.426,000215560628
      PCA-A24KA · cold climate18.712.59.526,000211259270
      TPCA0A0241KA70A Trane / Mitsubishi Electric · cold climate18.712.59.526,000206717833
      TPCA0A0241KA70A Trane / Mitsubishi Electric · cold climate18.712.59.526,000215560622
      PCA-A24KA · cold climate18.712.59.526,000215560621
      PEAD-A24AA · cold climate16.211.39.225,000215560623
      TPEADA0241AA Trane / Mitsubishi Electric · cold climate16.211.39.225,000215560624
      Yearly running cost in 10 large cities$527-$1,697

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

      Questions5
      What is the SEER2 rating of the Mitsubishi Electric PUZ-HA24NHA1?
      The Mitsubishi Electric PUZ-HA24NHA1 is rated at up to 21.6 SEER2 and 14.0 EER2 for cooling and up to 10.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 18 certified matchups SEER2 ranges from 16.2-21.6.
      Is the Mitsubishi Electric PUZ-HA24NHA1 good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 26,000 BTU/h at 5°F with a COP of 1.90, so it is still 1.9 times as efficient as electric resistance heat at that temperature.
      How much does the Mitsubishi Electric PUZ-HA24NHA1 cost to run per year?
      At its rated efficiency it costs about $527-$1,697 a year in electricity in large U.S. cities, depending on climate and local rates - for example $689 in Phoenix and $1,449 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 Mitsubishi Electric PUZ-HA24NHA1?
      ENERGY STAR lists 18 certified combinations for this outdoor unit. The highest-rated ones use PLA-A24EA, Trane / Mitsubishi Electric TPLA0A0241EA70A, PKA-A24KA.
      What refrigerant does the Mitsubishi Electric PUZ-HA24NHA1 use?
      It uses R-410A. R-410A is being phased down under the EPA AIM Act, and new systems are moving to R-454B and R-32.

      Running cost and savings

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

      Heat pump $705/yrYou save $598/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 Mitsubishi Electric PUZ-HA24NHA1
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $705
      Current system, per year
      $1,303
      You save per year
      $598
      Payback
      15.0 years
      Net after 10 years
      -$3,018

      Cooling $391Heating $314Electricity used: 4,404 kWhSaved vs. a minimum-efficiency heat pump: $304

      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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      Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of March 31, 2025. How we use the data.