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      4-ton central heat pump · R32 AHU Side discharge Hyper Heat

      TCL THH55TDI2NAF2H26

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

      Ranks #182 of 319 4 ton central heat pumps for cooling efficiency, and costs about $1,675 a year to run in a mixed climate like Atlanta.

      SEER2
      17.0 Cooling efficiency over a season
      Average · beats 49%
      HSPF2
      8.5 Heating efficiency over a season
      Below average · beats 38%
      EER2
      8.0 Cooling efficiency on a 95°F day
      Below average · beats 0%
      Heat at 5°F
      40,000 BTU/h74% 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 40,000 BTU/h at 5°F.
      • You want steady temperatures and quiet running - the compressor varies its speed.

      Think twice if…

      • You mainly need heat - its HSPF2 is below average for central heat pumps.

      Calculate my running cost

      Details

      Specifications4 ton, R-32
      General
      BrandTCL
      Outdoor unit modelTHH55TDI2NAF2H26
      SeriesR32 AHU Side discharge Hyper Heat
      TypeCentral heat pump
      Nominal size4 ton
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-32
      Connected (smart) capableNo
      On the market sinceMay 22, 2026
      Last certifiedJune 29, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better17.0 (range 17.0)
      EER2Efficiency at 95°F outdoors8.0
      Cooling capacity54,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better8.5
      Capacity at 47°F54,000 BTU/h
      Capacity at 17°F46,000 BTU/h
      Capacity at 5°F40,000 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater1.85
      ENERGY STAR cold climateYes
      Heating output as it gets colder74% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with THH48IDI2NAJ0H26 at the standard test temperatures, in BTU/h:

      Certified matchups1 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.
      THH48IDI2NAJ0H26 · cold climate17.08.08.540,000218467225
      Yearly running cost in 10 large cities$1,493-$4,009

      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 THH55TDI2NAF2H26?
      The TCL THH55TDI2NAF2H26 is rated at up to 17.0 SEER2 and 8.0 EER2 for cooling and up to 8.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
      Is the TCL THH55TDI2NAF2H26 good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 40,000 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 TCL THH55TDI2NAF2H26 cost to run per year?
      At its rated efficiency it costs about $1,493-$4,009 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,843 in Phoenix and $3,351 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 THH55TDI2NAF2H26?
      ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses THH48IDI2NAJ0H26.
      What refrigerant does the TCL THH55TDI2NAF2H26 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 $1,830/yrYou save $955/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 THH55TDI2NAF2H26
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $1,830
      Current system, per year
      $2,784
      You save per year
      $955
      Payback
      21.5 years
      Net after 10 years
      -$10,953

      Cooling $1,118Heating $712Electricity used: 11,435 kWhSaved vs. a minimum-efficiency heat pump: $306

      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 4 ton models

      See all 319 4 ton central heat pumps, ranked

      Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of June 29, 2026. How we use the data.