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      4-ton central heat pump · A7CP21V SERIES

      Armstrong Air A7CP21V48P-**A

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

      Ranks #5 of 319 4 ton central heat pumps for cooling efficiency, and costs about $1,247 a year to run in a mixed climate like Atlanta.

      SEER2
      20.5 Cooling efficiency over a season
      Excellent · beats 96%
      HSPF2
      9.6 Heating efficiency over a season
      Very good · beats 76%
      EER2
      12.2 Cooling efficiency on a 95°F day
      Very good · beats 75%
      Heat at 5°F
      39,500 BTU/h73% of its 47°F output
      Very good · beats 76%

      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 39,500 BTU/h at 5°F.
      • It will heat most of the year - its HSPF2 beats 76% of central heat pumps.
      • You want steady temperatures and quiet running - the compressor varies its speed.

      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 modelA7CP21V48P-**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 7, 2025
      Last certifiedSeptember 22, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better20.5 (range 15.7-20.5)
      EER2Efficiency at 95°F outdoors11.0-13.4
      Cooling capacity45,000-48,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better7.8-9.6
      Capacity at 47°F42,500-51,000 BTU/h
      Capacity at 17°F34,200-44,000 BTU/h
      Capacity at 5°F29,000-39,500 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater1.88-2.20
      ENERGY STAR cold climateYes
      Heating output as it gets colder73% kept at 5°F

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

      Certified matchups408 indoor units

      The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 408 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]60CX-**+TDR · cold climateA80UH2E110C16*20.512.29.634,200217122208
      7E[C,U]60CX-**+TDR · cold climateA80UH2E110C16*20.512.29.634,200217122107
      7E[C,U]60CX-**+TDR · cold climateA80UH2E110C16*20.512.29.634,200217465942
      7E[C,U]60CX-**+TDR · cold climateA80US2V080C20X*20.512.09.534,000217120489
      7E[C,U]60CX-**+TDR · cold climateA80US2V090C20*20.512.09.534,200217120490
      7E[C,U]60CX-**+TDR · cold climateA80US2V100C20X*20.512.09.534,200217120491
      7E[C,U]60CX-**+TDR · cold climateA80US2V080C20X*20.512.09.534,000217120563
      7E[C,U]60CX-**+TDR · cold climateA80US2V090C20*20.512.09.534,200217120564
      7E[C,U]60CX-**+TDR · cold climateA80US2V100C20X*20.512.09.534,200217120565
      7E[C,U]60CX-**+TDR · cold climateA80US2V080C20X*20.512.09.534,000217465846
      7E[C,U]60CX-**+TDR · cold climateA80US2V090C20*20.512.09.534,200217465847
      7E[C,U]60CX-**+TDR · cold climateA80US2V100C20X*20.512.09.534,200217465848
      7AH2AV60PXC · cold climate-20.512.09.032,600217117576
      7AH2AV60PXC · cold climate-20.512.09.032,600217117580
      7AH2AV60PXC · cold climate-20.512.09.032,600217465756
      7AH2AV48PXC · cold climate-20.512.59.033,000217466186
      7AH2AV48PXC · cold climate-20.512.59.033,000217730103
      7AH2AV48PXC · cold climate-20.512.59.033,000217730105
      7E[C,U]50/60CX-**+TDRA80US2V080C20X*20.512.28.529,400217120463
      7EH60DX-**+TDRA80US2V135D20*20.512.68.531,200217120465
      7EH60DX-**+TDRA98USMV135D20S*20.512.68.531,400217120467
      7EH60DX-**+TDRA80US2V080C20X*20.512.48.531,400217120477
      7EH60DX-**+TDRA97US2V080C16X*20.512.48.531,400217120478
      7EH60DX-**+TDRA98USMV090C20S*20.512.48.531,400217120480
      7EH60DX-**+TDRA97US2V135D20S*20.512.68.531,400217120481
      7E[C,U]50/60CX-**+TDRA80US2V080C20X*20.512.28.529,400217120537
      7EH60DX-**+TDRA80US2V135D20*20.512.68.531,200217120539
      7EH60DX-**+TDRA98USMV135D20S*20.512.68.531,400217120541
      7EH60DX-**+TDRA80US2V080C20X*20.512.48.531,400217120551
      7EH60DX-**+TDRA97US2V080C16X*20.512.48.531,400217120552
      7EH60DX-**+TDRA98USMV090C20S*20.512.48.531,400217120554
      7EH60DX-**+TDRA97US2V135D20S*20.512.68.531,400217120555
      7E[C,U]50/60CX-**+TDRA80US2V080C20X*20.512.28.529,400217465817
      7EH60DX-**+TDRA80US2V135D20*20.512.68.531,200217465819
      7EH60DX-**+TDRA97US2V080C16X*20.512.48.531,400217465832
      7EH60DX-**+TDRA98USMV090C20S*20.512.48.531,400217465834
      7EH60DX-**+TDRA97US2V135D20S*20.512.68.531,400217465835
      7EH60DX-**+TDRA80US2V080C20X*20.512.48.531,400217465831
      7EH60DX-**+TDRA98USMV135D20S*20.512.68.531,400217465821
      7ED48CX-**+TDRA97DS2V090C20S*20.511.78.232,400217446374
      7ED48CX-**+TDRA97DS2V110C20S*20.511.78.232,400217446375
      7ED48CX-**+TDRA80DS2V110C20*20.512.08.232,000217446366
      7ED48CX-**+TDRA97DSMV090C20S*20.511.78.232,400217446370
      7ED48CX-**+TDRA97DSMV110C20S*20.511.78.232,400217446371
      7ED48CX-**+TDRA80DS2V110C20*20.512.08.232,000217446597
      7ED48CX-**+TDRA97DSMV090C16S*20.511.78.232,400217446600
      7ED48CX-**+TDRA97DSMV090C20S*20.511.78.232,400217446601
      7ED48CX-**+TDRA97DSMV110C20S*20.511.78.232,400217446602
      7ED48CX-**+TDRA97DS2V090C20S*20.511.78.232,400217446605
      7ED48CX-**+TDRA97DS2V110C20S*20.511.78.232,400217446606
      7ED48CX-**+TDRA97DSMV090C16S*20.511.78.232,400217446369
      7ED48CX-**+TDRA80DS2V110C20*20.512.08.232,000217466167
      7ED48CX-**+TDRA97DSMV090C16S*20.511.78.232,400217466170
      7ED48CX-**+TDRA97DSMV090C20S*20.511.78.232,400217466171
      7ED48CX-**+TDRA97DSMV110C20S*20.511.78.232,400217466172
      7ED48CX-**+TDRA97DS2V090C20S*20.511.78.232,400217466175
      7ED48CX-**+TDRA97DS2V110C20S*20.511.78.232,400217466176
      7ED50/60CX-**+TDR · cold climateEFV16CCA*20.212.88.539,500217493342
      7ED50/60CX-**+TDR · cold climateEFV16CCA*20.212.88.539,500217493341
      7ED50/60CX-**+TDR · cold climateEFV16CCA*20.212.88.539,500217970390
      Yearly running cost in 10 large cities$1,068-$3,019

      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 A7CP21V48P-**A?
      The Armstrong Air A7CP21V48P-**A is rated at up to 20.5 SEER2 and 12.2 EER2 for cooling and up to 9.6 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 408 certified matchups SEER2 ranges from 15.7-20.5.
      Is the Armstrong Air A7CP21V48P-**A good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 39,500 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 Armstrong Air A7CP21V48P-**A cost to run per year?
      At its rated efficiency it costs about $1,068-$3,019 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,340 in Phoenix and $2,540 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 A7CP21V48P-**A?
      ENERGY STAR lists 408 certified combinations for this outdoor unit. The highest-rated ones use 7E[C,U]60CX-**+TDR, 7AH2AV60PXC, 7AH2AV48PXC.
      What refrigerant does the Armstrong Air A7CP21V48P-**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 $1,341/yrYou save $1,057/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 A7CP21V48P-**A
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $1,341
      Current system, per year
      $2,398
      You save per year
      $1,057
      Payback
      16.6 years
      Net after 10 years
      -$6,933

      Cooling $798Heating $543Electricity used: 8,381 kWhSaved vs. a minimum-efficiency heat pump: $498

      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 September 22, 2026. How we use the data.