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

      Trane / Mitsubishi Electric SUZ-KA24NA

      Below average cooling and heating efficiency for a 24,000 BTU mini-split heat pump, but not rated for cold climates.

      Ranks #361 of 430 24,000 BTU mini-splits for cooling efficiency, and costs about $666 a year to run in a mixed climate like Atlanta.

      SEER2
      19.7 Cooling efficiency over a season
      Below average · beats 13%
      HSPF2
      9.7 Heating efficiency over a season
      Below average · beats 31%
      EER2
      12.3 Cooling efficiency on a 95°F day
      Below average · beats 35%
      Heat at 5°F
      15,600 BTU/h62% of its 47°F output
      Excellent · beats 99%

      A good fit if…

      • You want steady temperatures and quiet running - the compressor varies its speed.

      Think twice if…

      • You often see nights below 0°F - it is not cold-climate certified.
      • Cooling cost matters most - its SEER2 is below average for mini-splits.
      • You mainly need heat - its HSPF2 is below average for mini-splits.
      • 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
      BrandTrane / Mitsubishi Electric
      Also sold asMitsubishi Electric
      Outdoor unit modelSUZ-KA24NA
      SeriesM-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 sinceNovember 1, 2023
      Last certifiedMay 28, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better19.7 (range 19.7)
      EER2Efficiency at 95°F outdoors12.3
      Cooling capacity24,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better9.7
      Capacity at 47°F25,000 BTU/h
      Capacity at 17°F15,300 BTU/h
      Capacity at 5°F15,600 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.55-2.78
      ENERGY STAR cold climateNo
      Heating output as it gets colder62% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with TPEADA0241AA90A at the standard test temperatures, in BTU/h:

      Certified matchups2 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.
      TPEADA0241AA90A19.712.39.715,600213363173
      PEAD-A24AA9 Mitsubishi Electric19.712.39.715,600213362158
      Same unit, other model numbers1

      These model numbers have exactly the same certified ratings and matchups as the Trane / Mitsubishi Electric SUZ-KA24NA: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

      Yearly running cost in 10 large cities$574-$1,609

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

      Questions6
      What is the SEER2 rating of the Trane / Mitsubishi Electric SUZ-KA24NA?
      The Trane / Mitsubishi Electric SUZ-KA24NA is rated at up to 19.7 SEER2 and 12.3 EER2 for cooling and up to 9.7 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
      Is the Trane / Mitsubishi Electric SUZ-KA24NA good for cold climates?
      It is not cold-climate certified: none of its matchups meet the ENERGY STAR cold-climate criteria (a COP of at least 1.75 at 5°F among other limits). In places with frequent sub-zero nights, pick a cold-climate 24,000 BTU model.
      How much does the Trane / Mitsubishi Electric SUZ-KA24NA cost to run per year?
      At its rated efficiency it costs about $574-$1,609 a year in electricity in large U.S. cities, depending on climate and local rates - for example $718 in Phoenix and $1,353 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
      Is the Trane / Mitsubishi Electric SUZ-KA24NA the same as the Trane / Mitsubishi Electric NTXSKS24A112?
      Yes, as far as the certified ratings go. ENERGY STAR lists both model numbers with identical efficiency, capacity and matchups, which means the same outdoor unit sold under a different brand or with a minor variant code (voltage, colour or region). The full list is on this page.
      Which indoor units work with the Trane / Mitsubishi Electric SUZ-KA24NA?
      ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated ones use TPEADA0241AA90A, Mitsubishi Electric PEAD-A24AA9.
      What refrigerant does the Trane / Mitsubishi Electric SUZ-KA24NA 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 $717/yrYou save $536/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 Trane / Mitsubishi Electric SUZ-KA24NA
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $717
      Current system, per year
      $1,254
      You save per year
      $536
      Payback
      16.8 years
      Net after 10 years
      -$3,636

      Cooling $429Heating $289Electricity used: 4,484 kWhSaved vs. a minimum-efficiency heat pump: $247

      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 May 28, 2026. How we use the data.