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      48,000 BTU mini-split heat pump · J-7

      Fujitsu AOUK048MSAN7

      Average cooling efficiency and below average heating efficiency for a 48,000 BTU mini-split heat pump, and certified for cold climates.

      Ranks #38 of 146 48,000 BTU mini-splits for cooling efficiency, and costs about $1,322 a year to run in a mixed climate like Atlanta.

      SEER2
      23.0 Cooling efficiency over a season
      Average · beats 62%
      HSPF2
      9.8 Heating efficiency over a season
      Below average · beats 33%
      EER2
      13.0 Cooling efficiency on a 95°F day
      Average · beats 62%
      Heat at 5°F
      42,000 BTU/h78% of its 47°F output
      Excellent · beats 90%

      A good fit if…

      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 42,000 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 mini-splits.

      Calculate my running cost

      Details

      Specifications48,000 BTU, R-32
      General
      BrandFujitsu
      Outdoor unit modelAOUK048MSAN7
      SeriesJ-7
      TypeMini-split heat pump
      Nominal size48,000 BTU
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-32
      Connected (smart) capableNo
      On the market sinceJune 12, 2026
      Last certifiedMay 29, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better23.0 (range 23.0)
      EER2Efficiency at 95°F outdoors13.0
      Cooling capacity48,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better9.8
      Capacity at 47°F54,000 BTU/h
      Capacity at 17°F32,000 BTU/h
      Capacity at 5°F42,000 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.36
      ENERGY STAR cold climateYes
      Heating output as it gets colder78% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its best matchup 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.
      - FUJITSU · cold climate23.013.09.842,000218466062
      Yearly running cost in 10 large cities$991-$3,316

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

      Questions4
      What is the SEER2 rating of the Fujitsu AOUK048MSAN7?
      The Fujitsu AOUK048MSAN7 is rated at up to 23.0 SEER2 and 13.0 EER2 for cooling and up to 9.8 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
      Is the Fujitsu AOUK048MSAN7 good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 42,000 BTU/h at 5°F with a COP of 2.36, so it is still 2.4 times as efficient as electric resistance heat at that temperature.
      How much does the Fujitsu AOUK048MSAN7 cost to run per year?
      At its rated efficiency it costs about $991-$3,316 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,314 in Phoenix and $2,841 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
      What refrigerant does the Fujitsu AOUK048MSAN7 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 $1,352/yrYou save $1,221/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 AOUK048MSAN7
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $1,352
      Current system, per year
      $2,573
      You save per year
      $1,221
      Payback
      14.7 years
      Net after 10 years
      -$5,786

      Cooling $735Heating $617Electricity used: 8,448 kWhSaved vs. a minimum-efficiency heat pump: $636

      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 29, 2026. How we use the data.