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      12,000 BTU mini-split heat pump · Clivia

      TOSOT TW12HP32A2AO

      Very good cooling efficiency and below average heating efficiency for a 12,000 BTU mini-split heat pump, and certified for cold climates.

      Ranks #158 of 394 12,000 BTU mini-splits for cooling efficiency, and costs about $305 a year to run in a mixed climate like Atlanta.

      SEER2
      24.5 Cooling efficiency over a season
      Very good · beats 79%
      HSPF2
      9.5 Heating efficiency over a season
      Below average · beats 24%
      EER2
      13.0 Cooling efficiency on a 95°F day
      Average · beats 62%
      Heat at 5°F
      9,500 BTU/h79% of its 47°F output
      Below average · beats 34%

      A good fit if…

      • You want low cooling bills - its SEER2 beats 79% of mini-splits.
      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 9,500 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 mini-splits.

      Calculate my running cost

      Details

      Specifications12,000 BTU, R-32
      General
      BrandTOSOT
      Outdoor unit modelTW12HP32A2AO
      SeriesClivia
      TypeMini-split heat pump
      Nominal size12,000 BTU
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-32
      Connected (smart) capableNo
      On the market sinceJanuary 12, 2024
      Last certifiedJuly 17, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better24.5 (range 24.5)
      EER2Efficiency at 95°F outdoors13.0
      Cooling capacity12,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better9.5
      Capacity at 47°F12,000 BTU/h
      Capacity at 17°F10,000-11,000 BTU/h
      Capacity at 5°F9,500 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater1.95
      ENERGY STAR cold climateYes
      Heating output as it gets colder79% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with TW12HCL32A5AI 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.
      TW12HCL32A5AI · cold climate24.513.09.59,500215399272
      TW12HP32A2AI · cold climate24.513.09.59,500215405710
      Yearly running cost in 10 large cities$232-$763

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

      Questions5
      What is the SEER2 rating of the TOSOT TW12HP32A2AO?
      The TOSOT TW12HP32A2AO is rated at up to 24.5 SEER2 and 13.0 EER2 for cooling and up to 9.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
      Is the TOSOT TW12HP32A2AO good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 9,500 BTU/h at 5°F with a COP of 1.95, so it is still 2.0 times as efficient as electric resistance heat at that temperature.
      How much does the TOSOT TW12HP32A2AO cost to run per year?
      At its rated efficiency it costs about $232-$763 a year in electricity in large U.S. cities, depending on climate and local rates - for example $306 in Phoenix and $652 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 TOSOT TW12HP32A2AO?
      ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated ones use TW12HCL32A5AI, TW12HP32A2AI.
      What refrigerant does the TOSOT TW12HP32A2AO 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 $314/yrYou save $305/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 TOSOT TW12HP32A2AO
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $314
      Current system, per year
      $619
      You save per year
      $305
      Payback
      14.8 years
      Net after 10 years
      -$1,451

      Cooling $172Heating $141Electricity used: 1,962 kWhSaved vs. a minimum-efficiency heat pump: $161

      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 394 12,000 BTU mini-splits, ranked

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