HVAC Rated
    Menu

      24,000 BTU mini-split heat pump · R32-Celing Floor-21S

      TCL TSH24HDI2NAJ0X25

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

      Ranks #348 of 430 24,000 BTU mini-splits for cooling efficiency, and costs about $654 a year to run in a mixed climate like Atlanta.

      SEER2
      20.0 Cooling efficiency over a season
      Below average · beats 18%
      HSPF2
      9.5 Heating efficiency over a season
      Below average · beats 24%
      EER2
      11.0 Cooling efficiency on a 95°F day
      Below average · beats 9%
      Heat at 5°F
      17,000 BTU/h71% 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 17,000 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 mini-splits.
      • You mainly need heat - its HSPF2 is below average for mini-splits.

      Calculate my running cost

      Details

      Specifications24,000 BTU, R-32
      General
      BrandTCL
      Outdoor unit modelTSH24HDI2NAJ0X25
      SeriesR32-Celing Floor-21S
      TypeMini-split heat pump
      Nominal size24,000 BTU
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-32
      Connected (smart) capableNo
      On the market sinceApril 1, 2026
      Last certifiedApril 27, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better20.0 (range 18.0-20.0)
      EER2Efficiency at 95°F outdoors11.0
      Cooling capacity24,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better9.5
      Capacity at 47°F24,000 BTU/h
      Capacity at 17°F18,000-18,700 BTU/h
      Capacity at 5°F17,000 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater1.90
      ENERGY STAR cold climateYes
      Heating output as it gets colder71% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with TFH24IDI2NAF25 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.
      TFH24IDI2NAF25 · cold climate20.011.09.517,000218374246
      TCH24IDI2NAC2518.011.09.517,000218374243
      Yearly running cost in 10 large cities$565-$1,579

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

      Questions5
      What is the SEER2 rating of the TCL TSH24HDI2NAJ0X25?
      The TCL TSH24HDI2NAJ0X25 is rated at up to 20.0 SEER2 and 11.0 EER2 for cooling and up to 9.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 2 certified matchups SEER2 ranges from 18.0-20.0.
      Is the TCL TSH24HDI2NAJ0X25 good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 17,000 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 TCL TSH24HDI2NAJ0X25 cost to run per year?
      At its rated efficiency it costs about $565-$1,579 a year in electricity in large U.S. cities, depending on climate and local rates - for example $706 in Phoenix and $1,326 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 TCL TSH24HDI2NAJ0X25?
      ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated ones use TFH24IDI2NAF25, TCH24IDI2NAC25.
      What refrigerant does the TCL TSH24HDI2NAJ0X25 use?
      It uses 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 $532/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 TCL TSH24HDI2NAJ0X25
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $705
      Current system, per year
      $1,238
      You save per year
      $532
      Payback
      16.9 years
      Net after 10 years
      -$3,678

      Cooling $422Heating $283Electricity used: 4,408 kWhSaved vs. a minimum-efficiency heat pump: $244

      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 April 27, 2026. How we use the data.