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      12,000 BTU mini-split heat pump · AIRSTAGE H series

      Fujitsu AOUH12KPAS1

      Very good cooling efficiency and average heating efficiency for a 12,000 BTU mini-split heat pump, but not rated for cold climates.

      Ranks #175 of 394 12,000 BTU mini-splits for cooling efficiency, and costs about $319 a year to run in a mixed climate like Atlanta.

      SEER2
      24.0 Cooling efficiency over a season
      Very good · beats 75%
      HSPF2
      10.5 Heating efficiency over a season
      Average · beats 61%
      EER2
      11.7 Cooling efficiency on a 95°F day
      Below average · beats 16%
      Heat at 5°F
      8,500 BTU/h61% of its 47°F output
      Very good · beats 84%

      A good fit if…

      • You want low cooling bills - its SEER2 beats 75% of mini-splits.
      • 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.

      Calculate my running cost

      Details

      Specifications12,000 BTU, R-32
      General
      BrandFujitsu
      Outdoor unit modelAOUH12KPAS1
      SeriesAIRSTAGE H series
      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 sinceJuly 20, 2024
      Last certifiedApril 17, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better24.0 (range 24.0)
      EER2Efficiency at 95°F outdoors11.7
      Cooling capacity12,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better10.5
      Capacity at 47°F14,000 BTU/h
      Capacity at 17°F8,700 BTU/h
      Capacity at 5°F8,500 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.28
      ENERGY STAR cold climateNo
      Heating output as it gets colder61% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with ASUH12KPAS 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.
      ASUH12KPAS FUJITSU24.011.710.58,500215212610
      ASUH12KPBS FUJITSU24.011.710.58,500218381301
      Yearly running cost in 10 large cities$238-$801

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

      Questions5
      What is the SEER2 rating of the Fujitsu AOUH12KPAS1?
      The Fujitsu AOUH12KPAS1 is rated at up to 24.0 SEER2 and 11.7 EER2 for cooling and up to 10.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
      Is the Fujitsu AOUH12KPAS1 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 12,000 BTU model.
      How much does the Fujitsu AOUH12KPAS1 cost to run per year?
      At its rated efficiency it costs about $238-$801 a year in electricity in large U.S. cities, depending on climate and local rates - for example $316 in Phoenix and $687 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 Fujitsu AOUH12KPAS1?
      ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated ones use FUJITSU ASUH12KPAS, FUJITSU ASUH12KPBS.
      What refrigerant does the Fujitsu AOUH12KPAS1 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 $325/yrYou save $326/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 Fujitsu AOUH12KPAS1
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $325
      Current system, per year
      $651
      You save per year
      $326
      Payback
      13.8 years
      Net after 10 years
      -$1,239

      Cooling $176Heating $149Electricity used: 2,033 kWhSaved vs. a minimum-efficiency heat pump: $179

      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 12,000 BTU models

      See all 394 12,000 BTU mini-splits, ranked

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