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      42,000 BTU mini-split heat pump · airCore700

      Hitachi PAS-48BUFASDQ1-LAC

      Average cooling and heating efficiency for a 42,000 BTU mini-split heat pump, and certified for cold climates.

      Ranks #11 of 61 42,000 BTU mini-splits for cooling efficiency, and costs about $1,100 a year to run in a mixed climate like Atlanta.

      SEER2
      22.5 Cooling efficiency over a season
      Average · beats 56%
      HSPF2
      10.0 Heating efficiency over a season
      Average · beats 43%
      EER2
      13.0 Cooling efficiency on a 95°F day
      Average · beats 62%
      Heat at 5°F
      34,200 BTU/h76% of its 47°F output
      Very good · beats 78%

      A good fit if…

      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 34,200 BTU/h at 5°F.
      • You want steady temperatures and quiet running - the compressor varies its speed.

      Think twice if…

      • Nothing stands out - its ratings have no weak spot for its class.

      Calculate my running cost

      Details

      Specifications42,000 BTU, R-32
      General
      BrandHitachi
      Outdoor unit modelPAS-48BUFASDQ1-LAC
      SeriesairCore700
      TypeMini-split heat pump
      Nominal size42,000 BTU
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-32
      Connected (smart) capableNo
      On the market sinceMay 13, 2025
      Last certifiedMarch 26, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better22.5 (range 20.5-22.5)
      EER2Efficiency at 95°F outdoors12.0-13.0
      Cooling capacity42,000-45,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better9.5-10.0
      Capacity at 47°F42,000-45,000 BTU/h
      Capacity at 17°F39,000-41,000 BTU/h
      Capacity at 5°F32,000-34,200 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.00-2.20
      ENERGY STAR cold climateYes
      Heating output as it gets colder76% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with PCI-B48UFA1DQ at the standard test temperatures, in BTU/h:

      Certified matchups3 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.
      PCI-B48UFA1DQ HITACHI · cold climate22.513.010.034,000217450780
      PPIM-B48UFA1DQ HITACHI · cold climate21.012.710.034,200217450756
      PPFC-B48UFA1DQ HITACHI · cold climate20.512.09.532,000217450773
      Yearly running cost in 10 large cities$912-$2,687

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

      Questions5
      What is the SEER2 rating of the Hitachi PAS-48BUFASDQ1-LAC?
      The Hitachi PAS-48BUFASDQ1-LAC is rated at up to 22.5 SEER2 and 13.0 EER2 for cooling and up to 10.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 3 certified matchups SEER2 ranges from 20.5-22.5.
      Is the Hitachi PAS-48BUFASDQ1-LAC good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 34,200 BTU/h at 5°F with a COP of 2.20, so it is still 2.2 times as efficient as electric resistance heat at that temperature.
      How much does the Hitachi PAS-48BUFASDQ1-LAC cost to run per year?
      At its rated efficiency it costs about $912-$2,687 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,159 in Phoenix and $2,271 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 Hitachi PAS-48BUFASDQ1-LAC?
      ENERGY STAR lists 3 certified combinations for this outdoor unit. The highest-rated ones use HITACHI PCI-B48UFA1DQ, HITACHI PPIM-B48UFA1DQ, HITACHI PPFC-B48UFA1DQ.
      What refrigerant does the Hitachi PAS-48BUFASDQ1-LAC 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 $1,168/yrYou save $1,075/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 Hitachi PAS-48BUFASDQ1-LAC
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $1,168
      Current system, per year
      $2,243
      You save per year
      $1,075
      Payback
      15.3 years
      Net after 10 years
      -$5,748

      Cooling $681Heating $487Electricity used: 7,298 kWhSaved vs. a minimum-efficiency heat pump: $553

      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 March 26, 2026. How we use the data.