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      36,000 BTU mini-split heat pump · HMSV-A-CB-O

      Hitachi HVAHP036C23S

      Average cooling efficiency and very good heating efficiency for a 36,000 BTU mini-split heat pump, but not rated for cold climates.

      Ranks #67 of 205 36,000 BTU mini-splits for cooling efficiency, and costs about $869 a year to run in a mixed climate like Atlanta.

      SEER2
      22.3 Cooling efficiency over a season
      Average · beats 53%
      HSPF2
      10.8 Heating efficiency over a season
      Very good · beats 71%
      EER2
      16.8 Cooling efficiency on a 95°F day
      Excellent · beats 98%
      Heat at 5°F
      35,000 BTU/h97% of its 47°F output
      Average · beats 48%

      A good fit if…

      • It will heat most of the year - its HSPF2 beats 71% 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

      Specifications36,000 BTU, R-32
      General
      BrandHitachi
      Outdoor unit modelHVAHP036C23S
      SeriesHMSV-A-CB-O
      TypeMini-split heat pump
      Nominal size36,000 BTU
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-32
      Connected (smart) capableNo
      On the market sinceMarch 25, 2025
      Last certifiedApril 17, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better22.3 (range 20.6-22.3)
      EER2Efficiency at 95°F outdoors14.1-16.8
      Cooling capacity36,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better9.7-10.8
      Capacity at 47°F36,000-40,000 BTU/h
      Capacity at 17°F25,000 BTU/h
      Capacity at 5°F35,000 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.00
      ENERGY STAR cold climateNo
      Heating output as it gets colder97% 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 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.
      - HITACHI22.316.810.835,000217036516
      - HITACHI21.515.510.335,000217036522
      - HITACHI20.614.19.735,000217036519
      Yearly running cost in 10 large cities$760-$2,091

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

      Questions4
      What is the SEER2 rating of the Hitachi HVAHP036C23S?
      The Hitachi HVAHP036C23S is rated at up to 22.3 SEER2 and 16.8 EER2 for cooling and up to 10.8 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 3 certified matchups SEER2 ranges from 20.6-22.3.
      Is the Hitachi HVAHP036C23S 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 36,000 BTU model.
      How much does the Hitachi HVAHP036C23S cost to run per year?
      At its rated efficiency it costs about $760-$2,091 a year in electricity in large U.S. cities, depending on climate and local rates - for example $945 in Phoenix and $1,753 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
      What refrigerant does the Hitachi HVAHP036C23S 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 $942/yrYou save $915/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 HVAHP036C23S
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $942
      Current system, per year
      $1,856
      You save per year
      $915
      Payback
      14.8 years
      Net after 10 years
      -$4,353

      Cooling $568Heating $373Electricity used: 5,885 kWhSaved vs. a minimum-efficiency heat pump: $482

      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 36,000 BTU models

      See all 205 36,000 BTU mini-splits, ranked

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