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      3.5-ton central heat pump · F-SERIES

      Friedrich FRP15AY42AJ2N

      Below average cooling and heating efficiency for a 3.5-ton central heat pump, and certified for cold climates.

      Ranks #72 of 138 3.5 ton central heat pumps for cooling efficiency, and costs about $1,308 a year to run in a mixed climate like Atlanta.

      SEER2
      16.0 Cooling efficiency over a season
      Below average · beats 26%
      HSPF2
      8.1 Heating efficiency over a season
      Below average · beats 20%
      EER2
      11.7 Cooling efficiency on a 95°F day
      Average · beats 43%
      Heat at 5°F
      19,300 BTU/h47% of its 47°F output
      Average · beats 58%

      A good fit if…

      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 19,300 BTU/h at 5°F.
      • You want a choice of indoor units - 129 certified pairings.

      Think twice if…

      • Cooling cost matters most - its SEER2 is below average for central heat pumps.
      • You mainly need heat - its HSPF2 is below average for central heat pumps.

      Calculate my running cost

      Details

      Specifications3.5 ton, R-454B
      General
      BrandFriedrich
      Outdoor unit modelFRP15AY42AJ2N
      SeriesF-SERIES
      TypeCentral heat pump
      Nominal size3.5 ton
      CompressorVariable-speed units run longer at low powerTwo-stage
      RefrigerantR-454B
      Connected (smart) capableNo
      On the market sinceAugust 6, 2024
      Last certifiedApril 9, 2025
      Cooling
      SEER2Seasonal efficiency, higher is better16.0 (range 15.2-16.0)
      EER2Efficiency at 95°F outdoors11.7-12.0
      Cooling capacity40,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better7.8-8.1
      Capacity at 47°F40,000 BTU/h
      Capacity at 17°F27,000-40,000 BTU/h
      Capacity at 5°F18,400-19,300 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.00-2.10
      ENERGY STAR cold climateYes
      Heating output as it gets colder47% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with TCFY4824STANM at the standard test temperatures, in BTU/h:

      Certified matchups129 indoor units

      The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 129 are shown. Ask your installer for the AHRI reference number of the exact system you are quoted.

      Indoor unitFurnaceSEER2EER2HSPF2Heat @5°FAHRI ref.
      TCFY4824STANM · cold climateFR801V1255A24UH16.011.78.118,800215655145
      TCFY4821STANM · cold climateFR802V0754A17DZ16.011.78.119,300215655185
      TCFY4821STANM · cold climateFR801V1005A21UHU16.011.78.118,800215655187
      TCFY4824STANM · cold climateFR802V1255A24UH16.011.78.118,800215655188
      TCFY4824STANM · cold climateFR801V1005A21UHU16.011.78.118,800215655200
      TCFY4821STANM · cold climateFR802V1005A21DZ16.011.78.118,700215655210
      TCFY4824STANM · cold climateFR801V1005A21DZ16.011.78.118,700215655218
      TCFY4821STANM · cold climateFR802V1004A17UH16.011.78.119,000215655216
      TCFY4824STANM · cold climateFR802V1255A24DZ16.011.78.118,700215655239
      TCFY4821STANM · cold climateFR802V0754A17UH16.011.78.118,800215655241
      TCFY4821STANM · cold climateFR802V1005A21UH16.011.78.118,800215655254
      TCFY4821STANM · cold climateFR802V0755A21DZ16.011.78.118,800215655261
      TCFY4821STANM · cold climateFR801V1005A21UHS16.011.78.118,800215655264
      TCFY4821STANM · cold climateFR801V0754A17DZ16.011.78.119,300215655272
      TCFY4821STANM · cold climateFR802V0755A21UH16.011.78.118,900215655310
      TCFY4821STANM · cold climateFR801V0704A17UH16.011.78.119,300215655341
      TCFY4824STANM · cold climateFR802V1005A21UH16.011.78.118,800215655343
      TCFY4824STANM · cold climateFR802V1005A21DZ16.011.78.118,700215655353
      TCFY4824STANM · cold climateFR801V1005A21UHN16.011.78.118,800215655362
      TCFY4821STANM · cold climateFR801V0755A21UH16.011.78.118,900215655361
      TCFY4821STANM · cold climateFR801V1004A17UH16.011.78.119,000215655367
      TCFY4821STANM · cold climateFR801V1005A21UHN16.011.78.118,800215655373
      TCFY4821STANM · cold climateFR801V1005A21DZ16.011.78.118,700215655372
      TCFY4821STANM · cold climateFR801V0755A21DZ16.011.78.118,800215655471
      TCFY4824STANM · cold climateFR801V0755A21UH16.011.78.118,900215655485
      TCFY4824STANM · cold climateFR802V0755A21UH16.011.78.118,900215655420
      TCFY4821STANM · cold climateFR801V0754A17UH16.011.78.118,800215655426
      TCFY4824STANM · cold climateFR801V1005A21UHS16.011.78.118,800215655451
      TCFY4824STANM · cold climateFR802V0755A21DZ16.011.78.118,800215655455
      TCFY4824STANM · cold climateFR801V1255A24DZ16.011.78.118,700215655457
      TCFY4824STANM · cold climateFR802V1505A24UH16.011.78.118,800215655458
      TCFY4824STANM · cold climateFR801V0755A21DZ16.011.78.118,800215655460
      TCFY4821STANM · cold climateFR951V0705A21UHU16.011.78.119,100215654954
      TCFY4824STANM · cold climateFR962V1005A21M416.011.78.119,100215656374
      TCFY4821STANM · cold climateFR962V1005A21M416.011.78.119,100215656410
      TCFY4824STANM · cold climateFR921V0855A21M416.011.78.119,200215654973
      TCFY4821STANM · cold climateFR921V0855A21M416.011.78.119,200215654974
      TCFY4821STANM · cold climateFR921V0705A21M416.011.78.119,100215655007
      TCFY4821STANM · cold climateFR921V1005A21M416.011.78.119,100215655020
      TCFY4824STANM · cold climateFR951V1155A24M416.011.78.118,800215655021
      TCFY4821STANM · cold climateFR962V0705A21M416.011.78.119,100215656465
      TCFY4824STANM · cold climateFR962V0705A21M416.011.78.119,100215657479
      TCFY4821STANM · cold climateFR951V1005A21UH16.011.78.119,000215655091
      TCFY4824STANM · cold climateFR951V0705A21UHU16.011.78.119,100215655104
      TCFY4824STANM · cold climateFR921V1155A24M416.011.78.118,800215655114
      TCFY4824STANM · cold climateFR921V1005A21M416.011.78.119,100215655122
      TCFY4824STANM · cold climateFR951V0855A21M416.011.78.119,200215655030
      TCFY4821STANM · cold climateFR951V0855A21M416.011.78.119,200215655042
      TCFY4821STANM · cold climateFR951V0705A21M416.011.78.119,100215655046
      TCFY4824STANM · cold climateFR951V1005A21M416.011.78.119,100215655049
      TCFY4821STANM · cold climateFR951V1005A21M416.011.78.119,100215655054
      TCFY4824STANM · cold climateFR921V0705A21M416.011.78.119,100215655064
      TCFY4824STANM · cold climateFR951V1005A21UH16.011.78.119,000215655072
      TCFY4824STANM · cold climateFR951V0705A21M416.011.78.119,100215655073
      TCFY4824STANM · cold climateFR962V1155A24M416.011.78.118,800215656448
      TCFY4821STANM · cold climateFR962V0855A21M416.011.78.119,200215656455
      TCFY4824STANM · cold climateFR962V0855A21M416.011.78.119,200215656459
      FRH2VY4824STACN · cold climate-16.012.08.118,400216030728
      FRH2VY4821STACN · cold climate-16.012.08.118,500216030729
      TCFY4824STANM · cold climateFR801V1505A24UH16.011.78.118,800216543698
      Yearly running cost in 10 large cities$1,175-$3,124

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

      Questions5
      What is the SEER2 rating of the Friedrich FRP15AY42AJ2N?
      The Friedrich FRP15AY42AJ2N is rated at up to 16.0 SEER2 and 11.7 EER2 for cooling and up to 8.1 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 129 certified matchups SEER2 ranges from 15.2-16.0.
      Is the Friedrich FRP15AY42AJ2N good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 19,300 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 Friedrich FRP15AY42AJ2N cost to run per year?
      At its rated efficiency it costs about $1,175-$3,124 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,446 in Phoenix and $2,608 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 Friedrich FRP15AY42AJ2N?
      ENERGY STAR lists 129 certified combinations for this outdoor unit. The highest-rated ones use TCFY4824STANM, TCFY4821STANM, FRH2VY4824STACN.
      What refrigerant does the Friedrich FRP15AY42AJ2N 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 $1,433/yrYou save $629/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 Friedrich FRP15AY42AJ2N
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $1,433
      Current system, per year
      $2,063
      You save per year
      $629
      Payback
      23.8 years
      Net after 10 years
      -$8,706

      Cooling $880Heating $553Electricity used: 8,957 kWhSaved vs. a minimum-efficiency heat pump: $149

      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 3.5 ton models

      See all 138 3.5 ton central heat pumps, ranked

      Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of April 9, 2025. How we use the data.