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      4-ton central heat pump · A7CP21V Series

      Armstrong Air A7CP21V60P-**A

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

      Ranks #8 of 319 4 ton central heat pumps for cooling efficiency, and costs about $1,501 a year to run in a mixed climate like Atlanta.

      SEER2
      20.5 Cooling efficiency over a season
      Excellent · beats 96%
      HSPF2
      9.0 Heating efficiency over a season
      Average · beats 54%
      EER2
      11.7 Cooling efficiency on a 95°F day
      Average · beats 43%
      Heat at 5°F
      38,500 BTU/h65% of its 47°F output
      Very good · beats 71%

      A good fit if…

      • You want low cooling bills - its SEER2 beats 96% of central heat pumps.
      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 38,500 BTU/h at 5°F.
      • You want steady temperatures and quiet running - the compressor varies its speed.
      • You want a choice of indoor units - 244 certified pairings.

      Think twice if…

      • Nothing stands out - its ratings have no weak spot for its class.

      Calculate my running cost

      Details

      Specifications4 ton, R-454B
      General
      BrandArmstrong Air
      Also sold asAIREASE, AC Pro
      Outdoor unit modelA7CP21V60P-**A
      SeriesA7CP21V Series
      TypeCentral heat pump
      Nominal size4 ton
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-454B
      Connected (smart) capableNo
      On the market sinceMarch 11, 2025
      Last certifiedAugust 5, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better20.5 (range 16.0-20.5)
      EER2Efficiency at 95°F outdoors11.0-12.0
      Cooling capacity52,000-56,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better8.1-9.0
      Capacity at 47°F52,000-55,500 BTU/h
      Capacity at 17°F40,000-46,000 BTU/h
      Capacity at 5°F31,600-38,500 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.06-2.18
      ENERGY STAR cold climateYes
      Heating output as it gets colder65% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with 7E[C,U]60DX-**+TDR at the standard test temperatures, in BTU/h:

      Certified matchups244 indoor units

      The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 244 are shown. Ask your installer for the AHRI reference number of the exact system you are quoted.

      Indoor unitFurnaceSEER2EER2HSPF2Heat @5°FAHRI ref.
      7E[C,U]60DX-**+TDRA80US2V135D20*20.511.79.034,200217120457
      7E[C,U]60DX-**+TDRA80US2V135D20*20.511.79.034,200217120531
      7E[C,U]60DX-**+TDRA80US2V135D20*20.511.79.034,200217465784
      7E[C,U]49CX-**+TDRA80US2V080C20X*20.511.78.535,600217120440
      7E[C,U]49CX-**+TDRA80US2V100C20X*20.511.78.535,600217120441
      7E[C,U]60CX-**+TDRA80US2V080C20X*20.512.08.534,800217120448
      7E[C,U]60CX-**+TDRA80US2V090C20*20.512.08.534,600217120449
      7E[C,U]60CX-**+TDRA80US2V100C20X*20.512.08.534,800217120450
      7E[C,U]60CX-**+TDRA80US2V110C20*20.512.08.534,800217120451
      7E[C,U]60CX-**+TDRA80US2V110C20L*20.512.08.534,800217120452
      7E[C,U]60DX-**+TDRA97US2V080C20X*20.511.78.534,600217120458
      7E[C,U]60DX-**+TDRA97US2V135D20S*20.511.78.534,400217120459
      7E[C,U]49CX-**+TDRA80US2V080C20X*20.511.78.535,600217120514
      7E[C,U]49CX-**+TDRA80US2V100C20X*20.511.78.535,600217120515
      7E[C,U]60CX-**+TDRA80US2V080C20X*20.512.08.534,800217120522
      7E[C,U]60CX-**+TDRA80US2V090C20*20.512.08.534,600217120523
      7E[C,U]60CX-**+TDRA80US2V100C20X*20.512.08.534,800217120524
      7E[C,U]60CX-**+TDRA80US2V110C20*20.512.08.534,800217120525
      7E[C,U]60CX-**+TDRA80US2V110C20L*20.512.08.534,800217120526
      7E[C,U]60DX-**+TDRA97US2V080C20X*20.511.78.534,600217120532
      7E[C,U]60DX-**+TDRA97US2V135D20S*20.511.78.534,400217120533
      7E[C,U]60DX-**+TDRA98USMV135D20S*20.511.78.534,400217120426
      7E[C,U]60DX-**+TDRA98USMV135D20S*20.511.78.534,400217120383
      7E[C,U]60DX-**+TDRA97US2V080C20X*20.511.78.534,600217465785
      7E[C,U]49CX-**+TDRA80US2V080C20X*20.511.78.535,600217465758
      7E[C,U]49CX-**+TDRA80US2V100C20X*20.511.78.535,600217465760
      7E[C,U]60CX-**+TDRA80US2V080C20X*20.512.08.534,800217465775
      7E[C,U]60CX-**+TDRA80US2V100C20X*20.512.08.534,800217465777
      7E[C,U]60CX-**+TDRA80US2V110C20*20.512.08.534,800217465778
      7E[C,U]60DX-**+TDRA98USMV135D20S*20.511.78.534,400217465858
      7E[C,U]60CX-**+TDRA80US2V090C20*20.512.08.534,600217465776
      7E[C,U]60CX-**+TDRA80US2V110C20L*20.512.08.534,800217465779
      7E[C,U]60DX-**+TDRA97US2V135D20S*20.511.78.534,400217465786
      7AH2AV60PXC-20.011.59.038,500217117574
      7AH2AV60PXC-20.011.59.038,500217117578
      7AH2AV60PXC-20.011.59.038,500217465754
      7EH60DX-**+TDRA80US2V135D20*20.012.08.535,200217120442
      7E[C,U]60CX-**+TDRA98USMV090C20S*20.011.78.535,000217120454
      7E[C,U]60CX-**+TDRA98USMV110C20S*20.011.78.535,000217120455
      7E[C,U]60CX-**+TDRA97US2V090C20S*20.011.78.535,200217120456
      7EH60DX-**+TDRA80US2V135D20*20.012.08.535,200217120516
      7EH60DX-**+TDRA80US2V080C20X*20.012.08.535,200217120518
      7E[C,U]60CX-**+TDRA97US2V080C20X*20.011.78.535,200217120527
      7E[C,U]60CX-**+TDRA98USMV090C20S*20.011.78.535,000217120528
      7E[C,U]60CX-**+TDRA98USMV110C20S*20.011.78.535,000217120529
      7E[C,U]60CX-**+TDRA97US2V090C20S*20.011.78.535,200217120530
      7EH60DX-**+TDRA80US2V080C20X*20.012.08.535,200217120444
      7E[C,U]60CX-**+TDRA97US2V080C20X*20.011.78.535,200217120453
      7E[C,U]60CX-**+TDRA80UH1E110C20*20.011.78.534,800217122040
      7E[C,U]60CX-**+TDRA80UH1E110C20*20.011.78.534,800217122141
      7E[C,U]49CX-**+TDRA80US2V090C20*20.011.58.535,400217120344
      7E[C,U]49CX-**+TDRA80US2V110C20*20.011.58.535,600217120345
      7E[C,U]49CX-**+TDRA80US2V110C20L*20.011.58.535,600217120346
      7E[C,U]49CX-**+TDRA97US2V080C20X*20.011.58.535,800217120347
      7E[C,U]49CX-**+TDRA98USMV110C20S*20.011.58.535,800217120349
      7E[C,U]49CX-**+TDRA97US2V090C20S*20.011.28.536,000217120350
      7E[C,U]49CX-**+TDRA80US2V090C20*20.011.58.535,400217120387
      7E[C,U]49CX-**+TDRA80US2V110C20*20.011.58.535,600217120388
      7E[C,U]49CX-**+TDRA80US2V110C20L*20.011.58.535,600217120389
      7E[C,U]49CX-**+TDRA97US2V080C20X*20.011.58.535,800217120390
      Yearly running cost in 10 large cities$1,243-$3,670

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

      Questions5
      What is the SEER2 rating of the Armstrong Air A7CP21V60P-**A?
      The Armstrong Air A7CP21V60P-**A is rated at up to 20.5 SEER2 and 11.7 EER2 for cooling and up to 9.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 244 certified matchups SEER2 ranges from 16.0-20.5.
      Is the Armstrong Air A7CP21V60P-**A good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 38,500 BTU/h at 5°F with a COP of 2.18, so it is still 2.2 times as efficient as electric resistance heat at that temperature.
      How much does the Armstrong Air A7CP21V60P-**A cost to run per year?
      At its rated efficiency it costs about $1,243-$3,670 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,580 in Phoenix and $3,103 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 Armstrong Air A7CP21V60P-**A?
      ENERGY STAR lists 244 certified combinations for this outdoor unit. The highest-rated ones use 7E[C,U]60DX-**+TDR, 7E[C,U]49CX-**+TDR, 7E[C,U]60CX-**+TDR.
      What refrigerant does the Armstrong Air A7CP21V60P-**A 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 $1,593/yrYou save $1,183/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 Armstrong Air A7CP21V60P-**A
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $1,593
      Current system, per year
      $2,776
      You save per year
      $1,183
      Payback
      17.3 years
      Net after 10 years
      -$8,668

      Cooling $927Heating $666Electricity used: 9,956 kWhSaved vs. a minimum-efficiency heat pump: $535

      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.

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      Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of August 5, 2026. How we use the data.