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      4-ton central heat pump · VANTIX

      Friedrich RD17AZ48AJ3N

      Average cooling efficiency and below average heating efficiency for a 4-ton central heat pump, and certified for cold climates.

      Ranks #105 of 319 4 ton central heat pumps for cooling efficiency, and costs about $1,431 a year to run in a mixed climate like Atlanta.

      SEER2
      18.0 Cooling efficiency over a season
      Average · beats 66%
      HSPF2
      8.5 Heating efficiency over a season
      Below average · beats 38%
      EER2
      12.0 Cooling efficiency on a 95°F day
      Average · beats 64%
      Heat at 5°F
      40,500 BTU/h53% of its 47°F output
      Very good · beats 88%

      A good fit if…

      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 40,500 BTU/h at 5°F.
      • You want steady temperatures and quiet running - the compressor varies its speed.
      • You want a choice of indoor units - 111 certified pairings.

      Think twice if…

      • You mainly need heat - its HSPF2 is below average for central heat pumps.
      • You want the newest refrigerant - it uses R-410A, which is being phased down.

      Calculate my running cost

      Details

      Specifications4 ton, R-410A
      General
      BrandFriedrich
      Also sold asSure, RUSSELL, Rheem, Ruud
      Outdoor unit modelRD17AZ48AJ3N
      SeriesVANTIX
      TypeCentral heat pump
      Nominal size4 ton
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-410A
      Connected (smart) capableYes
      On the market sinceJanuary 26, 2024
      Last certifiedJune 3, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better18.0 (range 16.0-18.0)
      EER2Efficiency at 95°F outdoors10.0-12.0
      Cooling capacity45,500 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better8.1-8.5
      Capacity at 47°F48,000 BTU/h
      Capacity at 17°F32,800-43,500 BTU/h
      Capacity at 5°F25,600-40,500 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.00-2.30
      ENERGY STAR cold climateYes
      Heating output as it gets colder53% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with SH2VZ4821STANA at the standard test temperatures, in BTU/h:

      Certified matchups111 indoor units

      The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 111 are shown. Ask your installer for the AHRI reference number of the exact system you are quoted.

      Indoor unitFurnaceSEER2EER2HSPF2Heat @5°FAHRI ref.
      SH2VZ4821STANA · cold climate-18.012.08.525,600214832605
      RH2TZ4821STANA · cold climate-18.012.08.525,600214832590
      RH2VZ4821STANA · cold climate-18.012.08.525,600214832591
      RH2TZ4821STANA · cold climate-18.012.08.525,600214832592
      RH2VZ4821STANA · cold climate-18.012.08.525,600214832593
      FRH2VZ4821STANA · cold climate-18.012.08.525,600214832599
      FRH2TZ4821STANA · cold climate-18.012.08.525,600214832598
      SH2CZ4821STANA · cold climate-18.012.08.525,600214832604
      SH2CZ4821STANA · cold climate-18.012.08.525,600214832608
      SH2VZ4821STANA · cold climate-18.012.08.525,600214832609
      RH2TZ6021STANA · cold climate-17.011.78.526,400214832595
      RH2TZ6021STANA · cold climate-17.011.78.526,400214832596
      FRH2TZ6021STANA · cold climate-17.011.78.526,400214832600
      FRH2VZ6021STANA · cold climate-17.011.78.526,400214832601
      SH2CZ6021STANA · cold climate-17.011.78.526,400214832602
      SH2VZ6021STANA · cold climate-17.011.78.526,400214832603
      SH2CZ6021STANA · cold climate-17.011.78.526,400214832606
      SH2VZ6021STANA · cold climate-17.011.78.526,400214832607
      RCFZ4821STAAM · cold climateFR98MV0855A21UP17.011.78.526,200214837764
      RCFZ4821STAAM · cold climateU97MV1005A21DHS17.011.78.526,200214837766
      RCFZ4821STAAM · cold climateFR97MV1005A21DH17.011.78.526,200214837773
      RCFZ4821STAAM · cold climateR97MV1005A21DH17.011.78.526,200214837782
      RCFZ4821STAAM · cold climateR97MV0855A21DH17.011.78.526,200214837788
      RCFZ4821STAAM · cold climateU98MV0855A21UPS17.011.78.526,200214837789
      RCFZ4821STAAM · cold climateFR97MV0855A21DH17.011.78.526,200214837790
      RCFZ4821STAAM · cold climateR98MV0855A21UP17.011.78.526,200214837791
      RCFZ4821STAAM · cold climateFR951V1005A21UH17.011.78.526,200214837797
      RCFZ4821STAAM · cold climateR951V0705A21UHU17.011.78.526,200214837799
      RCFZ4821STAAM · cold climateR951V0705A21UHU17.011.78.526,200214837800
      RCFZ4821STAAM · cold climateFR951V0705A21UHU17.011.78.526,200214837804
      RCFZ4821STAAM · cold climateU97MV0855A21DHS17.011.78.526,200214837807
      RCFZ4821STAAMFR962V0705A21M417.011.28.526,200214837763
      RCFZ4821STAAMR921V1005A21M417.011.28.526,200214837765
      RCFZ4821STAAMR962V0705A21M417.011.28.526,200214837768
      RCFZ4821STAAMR962V0855A21M417.011.28.526,400214837769
      RCFZ4821STAAMFR962V0855A21M417.011.28.526,400214837770
      RCFZ4821STAAMU98MV1005A21UPS17.011.28.526,400214837771
      RCFZ4821STAAMR951V1005A21M417.011.28.526,200214837772
      RCFZ4821STAAMR951V0705A21M417.011.28.526,200214837774
      RCFZ4821STAAMR951V1005A21M417.011.28.526,200214837775
      RCFZ4821STAAMR921V1005A21M417.011.28.526,200214837776
      RCFZ4821STAAMFR98MV1005A21UP17.011.28.526,400214837777
      RCFZ4821STAAMFR921V0855A21M417.011.28.526,400214837778
      RCFZ4821STAAMR962V0705A21M417.011.28.526,200214837781
      RCFZ4821STAAMR951V0705A21M417.011.28.526,200214837780
      RCFZ4821STAAMFR921V1005A21M417.011.28.526,200214837783
      RCFZ4821STAAMR98MV1005A21UP17.011.28.526,400214837784
      RCFZ4821STAAMFR951V1005A21M417.011.28.526,200214837787
      RCFZ4821STAAMR951V0855A21M417.011.28.526,400214837786
      RCFZ4821STAAMR951V0855A21M417.011.28.526,400214837785
      RCFZ4821STAAMFR951V0705A21M417.011.28.526,200214837792
      RCFZ4821STAAMR962V1005A21M417.011.28.526,200214837793
      RCFZ4821STAAMR962V1005A21M417.011.28.526,200214837794
      RCFZ4821STAAMR921V0705A21M417.011.28.526,200214837795
      RCFZ4821STAAMR962V0855A21M417.011.28.526,400214837796
      RCFZ4821STAAMR921V0855A21M417.011.28.526,400214837798
      RCFZ4821STAAMFR921V0705A21M417.011.28.526,200214837801
      RCFZ4821STAAMFR962V1005A21M417.011.28.526,200214837802
      RCFZ4821STAAMR921V0705A21M417.011.28.526,200214837803
      RCFZ4821STAAMR921V0855A21M417.011.28.526,400214837805
      Yearly running cost in 10 large cities$1,193-$3,492

      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 RD17AZ48AJ3N?
      The Friedrich RD17AZ48AJ3N is rated at up to 18.0 SEER2 and 12.0 EER2 for cooling and up to 8.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 111 certified matchups SEER2 ranges from 16.0-18.0.
      Is the Friedrich RD17AZ48AJ3N good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 40,500 BTU/h at 5°F with a COP of 2.30, so it is still 2.3 times as efficient as electric resistance heat at that temperature.
      How much does the Friedrich RD17AZ48AJ3N cost to run per year?
      At its rated efficiency it costs about $1,193-$3,492 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,512 in Phoenix and $2,950 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 RD17AZ48AJ3N?
      ENERGY STAR lists 111 certified combinations for this outdoor unit. The highest-rated ones use SH2VZ4821STANA, RH2TZ4821STANA, RH2VZ4821STANA.
      What refrigerant does the Friedrich RD17AZ48AJ3N use?
      It uses R-410A. R-410A is being phased down under the EPA AIM Act, and new systems are moving to R-454B and 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 $1,522/yrYou save $865/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 RD17AZ48AJ3N
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $1,522
      Current system, per year
      $2,387
      You save per year
      $865
      Payback
      19.7 years
      Net after 10 years
      -$8,352

      Cooling $890Heating $632Electricity used: 9,514 kWhSaved vs. a minimum-efficiency heat pump: $315

      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 4 ton models

      See all 319 4 ton central heat pumps, ranked

      Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of June 3, 2026. How we use the data.