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      2-ton central heat pump · W Series

      WeatherKing WP15AZ24AJ2N

      Below average cooling and heating efficiency for a 2-ton central heat pump, and certified for cold climates.

      Ranks #299 of 331 2 ton central heat pumps for cooling efficiency, and costs about $746 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
      13,200 BTU/h58% 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 13,200 BTU/h at 5°F.
      • You want a choice of indoor units - 78 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.
      • You want the newest refrigerant - it uses R-410A, which is being phased down.

      Calculate my running cost

      Details

      Specifications2 ton, R-410A
      General
      BrandWeatherKing
      Also sold asRuud, Rheem, Fujitsu
      Outdoor unit modelWP15AZ24AJ2N
      SeriesW Series
      TypeCentral heat pump
      Nominal size2 ton
      CompressorVariable-speed units run longer at low powerTwo-stage
      RefrigerantR-410A
      Connected (smart) capableNo
      On the market sinceFebruary 24, 2023
      Last certifiedJuly 7, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better16.0 (range 15.2-16.0)
      EER2Efficiency at 95°F outdoors11.7
      Cooling capacity22,800 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better7.8-8.1
      Capacity at 47°F18,500-22,800 BTU/h
      Capacity at 17°F13,600-16,300 BTU/h
      Capacity at 5°F11,500-13,200 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 colder58% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with RCFZ2417STANM at the standard test temperatures, in BTU/h:

      Certified matchups78 indoor units

      The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 78 are shown. Ask your installer for the AHRI reference number of the exact system you are quoted.

      Indoor unitFurnaceSEER2EER2HSPF2Heat @5°FAHRI ref.
      RCFZ2417STANM · cold climateR951V0703A17M4S16.011.78.113,200212941629
      RCFZ2417STANM · cold climateR951V0703A17M4S16.011.78.113,200212941604
      TCFZ2417STANM · cold climateW951W0703A17M4S16.011.78.113,200212941601
      RCFZ2417STANM · cold climateW951W0703A17M4S16.011.78.113,200214326663
      TCFZ2421MTANMW951W0403A17UHU16.011.77.811,900213372275
      TCFZ2417MTANMW951W0403A17UHU16.011.77.812,000213372276
      RCFZ2421MTANMR951V0603A17UHU16.011.77.811,800213372279
      RCFZ2421MTANMR951V0403A17UHU16.011.77.811,900213372281
      TCFZ2417MTANMW951W0603A17UHU16.011.77.812,000213372285
      RCFZ2417MTANMR951V0603A17UHU16.011.77.812,000213372287
      RCFZ2421MTANMR951V0403A17UHU16.011.77.811,900213372290
      RCFZ2417MTANMR951V0403A17UHU16.011.77.812,000213372292
      RCFZ2417MTANMR951V0603A17UHU16.011.77.812,000213372295
      TCFZ2421MTANMW951W0603A17UHU16.011.77.811,800213372298
      RCFZ2421MTANMR951V0603A17UHU16.011.77.811,800213372299
      RCFZ2417MTANMR951V0403A17UHU16.011.77.812,000213372300
      RCFZ2417MTANMW951W0603A17UHU16.011.77.812,000214326931
      RCFZ2417MTANMW951W0403A17UHU16.011.77.812,000214326930
      RCFZ2421MTANMW951W0403A17UHU16.011.77.811,900214326929
      RCFZ2421MTANMW951W0603A17UHU16.011.77.811,800214326932
      WH3VZ2417STANN-16.011.77.811,500214779511
      RH3VZ2417STACN-16.011.77.811,500214664598
      RH3VZ2417STACN-16.011.77.811,500214664597
      RCFZ2417STANMR801VA070417M15.211.78.1-212404380
      RCFZ2417STANMU96VA0402317M15.211.78.1-212404548
      RCFZ2417STANMR801VA050417M15.211.78.1-212404387
      RCFZ2417STANM · cold climateR962V0403A17M4S15.211.78.112,600212404552
      RCFZ2417STANMR96VA0702317M15.211.78.1-212404551
      TCFZ2417STANM · cold climateW962W0703A17M4S15.211.78.112,500212404559
      RCFZ2417STANMU96VA0702317M15.211.78.1-212404556
      RCFZ2417STANM · cold climateR962V0403A17M4S15.211.78.112,600212404555
      RCFZ2417STANM · cold climateR962V0703A17M4S15.211.78.112,500212404562
      RCFZ2417STANMR96VA0402317M15.211.78.1-212404549
      RCFZ2417STANM · cold climateR962V0703A17M4S15.211.78.112,500212404561
      RCFZ2417STANM · cold climateR962V0603A17M4S15.211.78.112,600212404560
      TCFZ2417STANM · cold climateW951W0603A17UHU15.211.78.112,700212404502
      TCFZ2417STANM · cold climateW951W0403A17M4S15.211.78.112,600212404501
      RCFZ2417STANMR801VA070417M15.211.78.1-212404398
      TCFZ2417STANM · cold climateW951W0403A17UHU15.211.78.112,700212404499
      RCFZ2417STANM · cold climateR951V0403A17UHU15.211.78.112,700212404496
      RCFZ2417STANM · cold climateR951V0403A17UHU15.211.78.112,700212404498
      RCFZ2417STANM · cold climateR951V0603A17M4S15.211.78.112,600212404504
      RCFZ2417STANMR801VA050417M15.211.78.1-212404382
      RCFZ2417STANMU96VA0602317M15.211.78.1-212404554
      TCFZ2417STANMW96VA0402317M15.211.78.1-212404547
      TCFZ2417STANMW96VA0602317M15.211.78.1-212404550
      TCFZ2417STANMW96VA0702317M15.211.78.1-212404557
      TCFZ2417STANM · cold climateW962W0603A17M4S15.211.78.112,600212404564
      RCFZ2417STANM · cold climateR962V0603A17M4S15.211.78.112,600212404563
      TCFZ2417STANM · cold climateW962W0403A17M4S15.211.78.112,600212404558
      RCFZ2417STANM · cold climateR951V0603A17M4S15.211.78.112,600212404512
      TCFZ2417STANM · cold climateW951W0603A17M4S15.211.78.112,600212404510
      RCFZ2417STANM · cold climateR951V0603A17UHU15.211.78.112,700212404508
      RCFZ2417STANM · cold climateR951V0603A17UHU15.211.78.112,700212404509
      RCFZ2417STANM · cold climateR951V0403A17M4S15.211.78.112,600212404507
      RCFZ2417STANM · cold climateR951V0403A17M4S15.211.78.112,600212404506
      FCCN2417SZTA · cold climateFF95SV304017M4S*A15.211.78.112,600212507741
      FCCN2417SZTA · cold climateFF95SV306017UHU**A15.211.78.112,700212507742
      FCCN2417SZTA · cold climateFF95SV306017M4S*A15.211.78.112,600212507744
      FCCN2417SZTA · cold climateFF96TV304017M4S*A15.211.78.112,600212507759
      Yearly running cost in 10 large cities$669-$1,780

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

      Questions5
      What is the SEER2 rating of the WeatherKing WP15AZ24AJ2N?
      The WeatherKing WP15AZ24AJ2N 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 78 certified matchups SEER2 ranges from 15.2-16.0.
      Is the WeatherKing WP15AZ24AJ2N good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 13,200 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 WeatherKing WP15AZ24AJ2N cost to run per year?
      At its rated efficiency it costs about $669-$1,780 a year in electricity in large U.S. cities, depending on climate and local rates - for example $824 in Phoenix and $1,486 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 WeatherKing WP15AZ24AJ2N?
      ENERGY STAR lists 78 certified combinations for this outdoor unit. The highest-rated ones use RCFZ2417STANM, TCFZ2417STANM, TCFZ2421MTANM.
      What refrigerant does the WeatherKing WP15AZ24AJ2N 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 $817/yrYou save $359/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 WeatherKing WP15AZ24AJ2N
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $817
      Current system, per year
      $1,176
      You save per year
      $359
      Payback
      23.7 years
      Net after 10 years
      -$4,912

      Cooling $502Heating $315Electricity used: 5,105 kWhSaved vs. a minimum-efficiency heat pump: $85

      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 2 ton models

      See all 331 2 ton central heat pumps, ranked

      Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of July 7, 2026. How we use the data.