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      3-ton central heat pump · F Series

      Fujitsu FOP1936MJAYCA

      Excellent cooling efficiency and very good heating efficiency for a 3-ton central heat pump, and certified for cold climates.

      Ranks #29 of 302 3 ton central heat pumps for cooling efficiency, and costs about $932 a year to run in a mixed climate like Atlanta.

      SEER2
      20.0 Cooling efficiency over a season
      Excellent · beats 94%
      HSPF2
      9.5 Heating efficiency over a season
      Very good · beats 70%
      EER2
      12.5 Cooling efficiency on a 95°F day
      Very good · beats 80%
      Heat at 5°F
      29,400 BTU/h86% of its 47°F output
      Average · beats 58%

      A good fit if…

      • You want low cooling bills - its SEER2 beats 94% of central heat pumps.
      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 29,400 BTU/h at 5°F.
      • It will heat most of the year - its HSPF2 beats 70% of central heat pumps.
      • 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

      Specifications3 ton, R-454B
      General
      BrandFujitsu
      Also sold asMainline
      Outdoor unit modelFOP1936MJAYCA
      SeriesF Series
      TypeCentral heat pump
      Nominal size3 ton
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-454B
      Connected (smart) capableYes
      On the market sinceSeptember 12, 2024
      Last certifiedSeptember 15, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better20.0 (range 20.0)
      EER2Efficiency at 95°F outdoors12.5
      Cooling capacity34,200 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better9.5
      Capacity at 47°F34,200 BTU/h
      Capacity at 17°F30,000 BTU/h
      Capacity at 5°F29,400 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.10
      ENERGY STAR cold climateYes
      Heating output as it gets colder86% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with FHRAVM3621M*YECA 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.
      FHRAVM3621M*YECA · cold climate20.012.59.529,400215611120
      Same unit, other model numbers1

      These model numbers have exactly the same certified ratings and matchups as the Fujitsu FOP1936MJAYCA: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

      Yearly running cost in 10 large cities$805-$2,250

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

      Questions6
      What is the SEER2 rating of the Fujitsu FOP1936MJAYCA?
      The Fujitsu FOP1936MJAYCA is rated at up to 20.0 SEER2 and 12.5 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 Fujitsu FOP1936MJAYCA good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 29,400 BTU/h at 5°F with a COP of 2.10, so it is still 2.1 times as efficient as electric resistance heat at that temperature.
      How much does the Fujitsu FOP1936MJAYCA cost to run per year?
      At its rated efficiency it costs about $805-$2,250 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,006 in Phoenix and $1,890 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
      Is the Fujitsu FOP1936MJAYCA the same as the Mainline MLP19AY36AJVC?
      Yes, as far as the certified ratings go. ENERGY STAR lists both model numbers with identical efficiency, capacity and matchups, which means the same outdoor unit sold under a different brand or with a minor variant code (voltage, colour or region). The full list is on this page.
      Which indoor units work with the Fujitsu FOP1936MJAYCA?
      ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses FHRAVM3621M*YECA.
      What refrigerant does the Fujitsu FOP1936MJAYCA use?
      It uses R-454B.

      Running cost and savings

      Pre-filled with this model. Pick your city and what you heat with today; everything else is optional.

      Heat pump $1,005/yrYou save $758/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 FOP1936MJAYCA
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $1,005
      Current system, per year
      $1,763
      You save per year
      $758
      Payback
      17.1 years
      Net after 10 years
      -$5,417

      Cooling $602Heating $403Electricity used: 6,282 kWhSaved vs. a minimum-efficiency heat pump: $347

      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 September 15, 2026. How we use the data.