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      2.5-ton central heat pump · W Series

      WeatherKing WP15AZ30AJ2N

      Below average cooling and heating efficiency for a 2.5-ton central heat pump, and certified for cold climates.

      Ranks #150 of 199 2.5 ton central heat pumps for cooling efficiency, and costs about $929 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
      16,100 BTU/h50% of its 47°F output
      Very good · beats 76%

      A good fit if…

      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 16,100 BTU/h at 5°F.
      • You want a choice of indoor units - 82 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

      Specifications2.5 ton, R-410A
      General
      BrandWeatherKing
      Also sold asRuud, Rheem, Fujitsu
      Outdoor unit modelWP15AZ30AJ2N
      SeriesW Series
      TypeCentral heat pump
      Nominal size2.5 ton
      CompressorVariable-speed units run longer at low powerTwo-stage
      RefrigerantR-410A
      Connected (smart) capableNo
      On the market sinceFebruary 27, 2023
      Last certifiedJuly 7, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better16.0 (range 15.2-16.0)
      EER2Efficiency at 95°F outdoors11.7
      Cooling capacity27,800-28,400 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better7.8-8.1
      Capacity at 47°F27,800-28,400 BTU/h
      Capacity at 17°F18,300-20,200 BTU/h
      Capacity at 5°F14,100-16,100 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater1.90-2.20
      ENERGY STAR cold climateYes
      Heating output as it gets colder50% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with WH3VZ3617STANN at the standard test temperatures, in BTU/h:

      Certified matchups82 indoor units

      The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 82 are shown. Ask your installer for the AHRI reference number of the exact system you are quoted.

      Indoor unitFurnaceSEER2EER2HSPF2Heat @5°FAHRI ref.
      WH3VZ3617STANN-16.011.77.814,100214779285
      WH3VZ3617STANN-16.011.77.814,100214779512
      RCFZ3617STANM · cold climateR951V0403A17M4S15.211.78.116,000212404523
      RCFZ3617STANM · cold climateR951V0703A17M4S15.211.78.115,900212404529
      RCFZ3617STANM · cold climateR962V0403A17M4S15.211.78.116,000212404578
      RCFZ3617STANM · cold climateR962V0403A17M4S15.211.78.116,000212404576
      RCFZ3617STANMU96VA0402317M15.211.78.1-212404579
      RCFZ3617STANM · cold climateR962V0603A17M4S15.211.78.116,100212404566
      TCFZ3617STANM · cold climateW951W0403A17M4S15.211.78.116,000212404527
      RCFZ3617STANM · cold climateR951V0603A17M4S15.211.78.116,100212404526
      RCFZ3617STANM · cold climateR951V0403A17M4S15.211.78.116,000212404528
      RCFZ3617STANMU96VA0602317M15.211.78.1-212404568
      TCFZ3617STANMW96VA0602317M15.211.78.1-212404571
      TCFZ3617STANM · cold climateW962W0703A17M4S15.211.78.115,900212404565
      RCFZ3617STANMR801VA070417M15.211.78.1-212404399
      RCFZ3617STANM · cold climateR951V0703A17M4S15.211.78.115,900212404524
      TCFZ3617STANM · cold climateW962W0603A17M4S15.211.78.116,100212404573
      RCFZ3617STANM · cold climateR951V0603A17M4S15.211.78.116,100212404531
      RCFZ3617STANMR801VA070417M15.211.78.1-212404416
      TCFZ3617STANM · cold climateW951W0603A17M4S15.211.78.116,100212404522
      RCFZ3617STANMR801V0504A17UH15.211.78.1-212404418
      RCFZ3617STANMR801V0504A17UH15.211.78.1-212404403
      RCFZ3617STANMR96VA0402317M15.211.78.1-212404574
      TCFZ3617STANM · cold climateW962W0403A17M4S15.211.78.116,000212404569
      RCFZ3617STANM · cold climateR962V0703A17M4S15.211.78.115,900212404577
      RCFZ3617STANM · cold climateR962V0603A17M4S15.211.78.116,100212404572
      RCFZ3617STANM · cold climateR962V0703A17M4S15.211.78.115,900212404570
      TCFZ3617STANMW96VA0402317M15.211.78.1-212404567
      RCFZ3621STANM · cold climateR962V0603A17M4S15.211.78.116,100213244542
      TCFZ3621STANM · cold climateW962W0603A17M4S15.211.78.116,100213244549
      RCFZ3621STANM · cold climateR951V0403A17M4S15.211.78.116,000213244537
      TCFZ3621STANM · cold climateW951W0403A17M4S15.211.78.116,000213244536
      TCFZ3621STANM · cold climateW962W0403A17M4S15.211.78.116,000213244545
      RCFZ3621STANM · cold climateR962V0603A17M4S15.211.78.116,100213244548
      TCFZ3621STANM · cold climateW951W0603A17M4S15.211.78.116,100213244531
      RCFZ3621STANM · cold climateR962V0403A17M4S15.211.78.116,000213244553
      RCFZ3621STANM · cold climateR951V0703A17M4S15.211.78.115,900213244538
      RCFZ3621STANM · cold climateR951V0603A17M4S15.211.78.116,100213244540
      RCFZ3621STANM · cold climateR962V0703A17M4S15.211.78.115,900213244546
      RCFZ3621STANMU96VA0602317M15.211.78.1-213244544
      TCFZ3621STANM · cold climateW951W0703A17M4S15.211.78.115,900213244524
      RCFZ3621STANM · cold climateR951V0603A17M4S15.211.78.116,100213244535
      RCFZ3621STANM · cold climateR951V0403A17M4S15.211.78.116,000213244532
      TCFZ3621STANM · cold climateW962W0703A17M4S15.211.78.115,900213244541
      RCFZ3621STANMU96VA0402317M15.211.78.1-213244554
      RCFZ3621STANM · cold climateR951V0703A17M4S15.211.78.115,900213244533
      RCFZ3621STANM · cold climateR962V0403A17M4S15.211.78.116,000213244551
      RCFZ3621STANM · cold climateR962V0703A17M4S15.211.78.115,900213244552
      RCFZ3621STANMR802V0503A14DZ15.211.78.1-213244507
      TCFZ3617STANM · cold climateW951W0703A17M4S15.211.78.115,900212404515
      TCFZ3617STANMW802VA075317Z15.211.78.1-212404456
      RCFZ3617STANM · cold climateW951W0703A17M4S15.211.78.115,900214326576
      RCFZ3617STANM · cold climateW951W0603A17M4S15.211.78.116,100214326580
      RCFZ3621STANM · cold climateW951W0703A17M4S15.211.78.115,900214326911
      RCFZ3617STANM · cold climateW962W0703A17M4S15.211.78.115,900214326588
      RCFZ3617STANM · cold climateW951W0403A17M4S15.211.78.116,000214326581
      RCFZ3617STANM · cold climateW962W0403A17M4S15.211.78.116,000214326589
      RCFZ3617STANM · cold climateW962W0603A17M4S15.211.78.116,100214326590
      RCFZ3621STANM · cold climateW951W0603A17M4S15.211.78.116,100214326915
      RCFZ3621STANM · cold climateW951W0403A17M4S15.211.78.116,000214326916
      Yearly running cost in 10 large cities$834-$2,218

      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 WP15AZ30AJ2N?
      The WeatherKing WP15AZ30AJ2N 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 82 certified matchups SEER2 ranges from 15.2-16.0.
      Is the WeatherKing WP15AZ30AJ2N good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 16,100 BTU/h at 5°F with a COP of 2.20, so it is still 2.2 times as efficient as electric resistance heat at that temperature.
      How much does the WeatherKing WP15AZ30AJ2N cost to run per year?
      At its rated efficiency it costs about $834-$2,218 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,026 in Phoenix and $1,852 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 WP15AZ30AJ2N?
      ENERGY STAR lists 82 certified combinations for this outdoor unit. The highest-rated ones use WH3VZ3617STANN, RCFZ3617STANM, TCFZ3617STANM.
      What refrigerant does the WeatherKing WP15AZ30AJ2N 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 $1,017/yrYou save $447/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 WP15AZ30AJ2N
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $1,017
      Current system, per year
      $1,464
      You save per year
      $447
      Payback
      23.5 years
      Net after 10 years
      -$6,031

      Cooling $625Heating $393Electricity used: 6,359 kWhSaved vs. a minimum-efficiency heat pump: $106

      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 2.5 ton models

      See all 199 2.5 ton central heat pumps, ranked

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