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      4-ton central heat pump · Breeze

      Friedrich WFPU18Z483C

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

      Ranks #150 of 319 4 ton central heat pumps for cooling efficiency, and costs about $1,449 a year to run in a mixed climate like Atlanta.

      SEER2
      17.5 Cooling efficiency over a season
      Average · beats 58%
      HSPF2
      8.6 Heating efficiency over a season
      Average · beats 44%
      EER2
      10.1 Cooling efficiency on a 95°F day
      Below average · beats 14%
      Heat at 5°F
      34,600 BTU/h70% of its 47°F output
      Below average · beats 26%

      A good fit if…

      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 34,600 BTU/h at 5°F.
      • You want steady temperatures and quiet running - the compressor varies its speed.

      Think twice if…

      • 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
      Outdoor unit modelWFPU18Z483C
      SeriesBreeze
      TypeCentral heat pump
      Nominal size4 ton
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-410A
      Connected (smart) capableNo
      On the market sinceNovember 21, 2023
      Last certifiedOctober 24, 2024
      Cooling
      SEER2Seasonal efficiency, higher is better17.5 (range 15.6-17.5)
      EER2Efficiency at 95°F outdoors10.1-11.4
      Cooling capacity42,000-48,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better8.5-8.6
      Capacity at 47°F42,000-47,000 BTU/h
      Capacity at 17°F31,000-31,200 BTU/h
      Capacity at 5°F33,000-34,600 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater1.90-1.94
      ENERGY STAR cold climateYes
      Heating output as it gets colder70% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with WFH48Z223C at the standard test temperatures, in BTU/h:

      Certified matchups2 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.
      WFH48Z223C · cold climate17.510.18.533,000213795618
      DC61A44-245R · cold climate15.611.48.634,600214061914
      Yearly running cost in 10 large cities$1,289-$3,467

      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 WFPU18Z483C?
      The Friedrich WFPU18Z483C is rated at up to 17.5 SEER2 and 10.1 EER2 for cooling and up to 8.6 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 2 certified matchups SEER2 ranges from 15.6-17.5.
      Is the Friedrich WFPU18Z483C good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 34,600 BTU/h at 5°F with a COP of 1.94, so it is still 1.9 times as efficient as electric resistance heat at that temperature.
      How much does the Friedrich WFPU18Z483C cost to run per year?
      At its rated efficiency it costs about $1,289-$3,467 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,592 in Phoenix and $2,899 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 WFPU18Z483C?
      ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated ones use WFH48Z223C, DC61A44-245R.
      What refrigerant does the Friedrich WFPU18Z483C 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 $1,581/yrYou save $877/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 WFPU18Z483C
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $1,581
      Current system, per year
      $2,459
      You save per year
      $877
      Payback
      20.5 years
      Net after 10 years
      -$9,225

      Cooling $965Heating $616Electricity used: 9,882 kWhSaved vs. a minimum-efficiency heat pump: $302

      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 October 24, 2024. How we use the data.