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      4-ton central heat pump · 2-STAGE 18 SEER HP

      Carrier 27TPA848A**30

      Average cooling efficiency and below average heating efficiency for a 4-ton central heat pump, but not rated for cold climates.

      Ranks #101 of 319 4 ton central heat pumps for cooling efficiency, and costs about $1,498 a year to run in a mixed climate like Atlanta.

      SEER2
      18.0 Cooling efficiency over a season
      Average · beats 66%
      HSPF2
      8.5 Heating efficiency over a season
      Below average · beats 38%
      EER2
      13.0 Cooling efficiency on a 95°F day
      Very good · beats 89%
      Heat at 5°F
      26,600 BTU/h50% of its 47°F output
      Excellent · beats 90%

      A good fit if…

      • You want a choice of indoor units - 432 certified pairings.

      Think twice if…

      • You often see nights below 0°F - it is not cold-climate certified.
      • You mainly need heat - its HSPF2 is below average for central heat pumps.

      Calculate my running cost

      Details

      Specifications4 ton, R-454B
      General
      BrandCarrier
      Outdoor unit model27TPA848A**30
      Series2-STAGE 18 SEER HP
      TypeCentral heat pump
      Nominal size4 ton
      CompressorVariable-speed units run longer at low powerTwo-stage
      RefrigerantR-454B
      Connected (smart) capableNo
      On the market sinceNovember 4, 2024
      Last certifiedSeptember 16, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better18.0 (range 15.2-18.0)
      EER2Efficiency at 95°F outdoors11.7-13.5
      Cooling capacity45,500-50,500 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better7.8-8.5
      Capacity at 47°F48,500-52,500 BTU/h
      Capacity at 17°F30,000-32,600 BTU/h
      Capacity at 5°F23,800-26,600 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.06-2.32
      ENERGY STAR cold climateNo
      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 FT5BD6021X at the standard test temperatures, in BTU/h:

      Certified matchups432 indoor units

      The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 432 are shown. Ask your installer for the AHRI reference number of the exact system you are quoted.

      Indoor unitFurnaceSEER2EER2HSPF2Heat @5°FAHRI ref.
      FT5BD6021X-18.013.08.525,800218695439
      FT5ANBD60L-18.013.58.124,600215560636
      FG5ANBD60L-18.013.58.124,600215560704
      CVAVA6121XMA58SP*B110V21**2217.512.58.524,800215625023
      CVAVA6121XMA58SU*B080M21**2017.513.08.524,400215625055
      CVAVA6121XMA58SU*B100M21**2017.512.58.525,000215625074
      CVAVA6121XMA58TN*B090C21**2017.512.08.525,200215625107
      CVAVA6121XMA58TN*B110C21**2017.512.58.525,000215625121
      CVAVA6124XMA59SU5B100M21**2217.512.58.525,000215625655
      CVAVA6121XMA59TP6C100V21**2217.512.58.524,600215625367
      CVAVA6124XMA58SP*B110V21**2217.512.58.525,000215625393
      CVAVA6124XMA58SP*B135V24**2217.512.58.525,200215625406
      CVAVA6124XMA58TN*B135C24**2217.512.58.524,800215625466
      CVAVA6124XMA58TP*B110V21**2217.512.58.524,800215625496
      CVAVA6124XMA58TP*B135V24**2217.512.58.525,000215625514
      CVAVA6124XMA59TP6C100V21**2217.512.58.524,800215625747
      CVAVA6121XMA59TP7A100V21**2217.512.58.524,600215722397
      CVAVA6124XMA59TP7A100V21**2217.512.58.524,800215722514
      CVAMA4921XMA58SU*B080M21**2017.512.58.124,400215623308
      CVAMA6021XMA59TP6C100V21**2217.512.58.124,400215624032
      CVAMA6021XMA58SU*B080M21**2017.512.58.124,400215623706
      CVAVA4924XMA58SU*B080M21**2017.512.58.124,600215624464
      CVAVA6021XMA59TP6C100V21**2217.512.58.124,400215624997
      CVAVA6121XMA58SU*B060M17**1617.512.08.125,000215625036
      CVAVA6121XMA58TP*B110V21**2217.512.58.124,600215625151
      CVAVA6121XMA59SU5B100M21**2217.512.58.124,400215625289
      FT5BD4821X-17.512.58.125,400218695422
      CVAMA6021XMA59TP7A100V21**2217.512.58.024,400215722091
      CVAVA6021XMA59TP7A100V21**2217.512.58.024,400215722294
      CVAVA6121XMA58CU*B080C21**2017.512.58.024,800215722307
      CVAVA6124XMA58CU*B080C21**2017.512.58.024,600215722410
      CVAVA4924XMA59TP6C100V21**2217.012.08.524,800215624703
      CVAVA6121XMA58SP*B090V21**2017.012.58.524,800215625010
      CVAVA6121XMA58TP*B090V21**2017.012.58.524,800215625135
      CVAVA6124XMA58SU*B100M21**2017.012.58.525,000215625419
      CVAVA6124XMA59SP6B120V24**2217.012.08.525,200215625604
      CVAVA6121XMA59SU5B100M21**2017.012.58.524,800215625270
      CVAVA6121XMA59TN6C080C21**2017.012.58.525,200215625303
      CVAVA6124XMA58SP*B090V21**2017.012.58.525,000215625380
      CVAVA6124XMA58TN*B090C21**2017.012.58.525,000215625452
      CVAVA6124XMA58TP*B090V21**2017.012.58.525,000215625480
      CVAVA6124XMA59TP6C080V21**2017.012.08.525,600215625711
      CVAMA4821XMA58SU*B080M21**2017.012.08.124,000215622951
      CVAMA4921XMA58SP*B090V21**2017.012.08.125,000215623263
      CVAMA4921XMA58SP*B110V21**2217.012.58.124,600215623276
      CVAMA4921XMA58SU*B060M17**1617.012.08.125,000215623289
      CVAMA4921XMA58SU*B100M21**2017.012.08.124,800215623327
      CVAMA4921XMA58TN*B090C21**2017.012.08.125,200215623360
      CVAMA4921XMA58TN*B110C21**2017.012.08.125,000215623374
      CVAMA4921XMA58TP*B090V21**2017.012.08.125,000215623388
      CVAMA4921XMA58TP*B110V21**2217.012.58.124,800215623404
      CVAMA4921XMA59MN7C100C21**2217.012.08.125,200215623478
      CVAMA4921XMA59SU5B100M21**2017.012.08.125,200215623537
      CVAMA4921XMA59SU5B100M21**2217.012.58.124,800215623556
      CVAMA4921XMA59TN6C100C21**2217.012.08.125,200215623584
      CVAVA4821XMA58SU*B080M21**2017.012.08.124,000215624091
      CVAMA4921XMA59TP6C100V21**2217.012.58.124,400215623634
      CVAMA6021XMA58CU*A100C21**2017.012.08.125,200215623647
      CVAMA6021XMA58SP*B090V21**2017.012.08.124,600215623661
      CVAMA6021XMA58SP*B110V21**2217.012.58.124,400215623674
      Yearly running cost in 10 large cities$1,258-$3,646

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

      Questions5
      What is the SEER2 rating of the Carrier 27TPA848A**30?
      The Carrier 27TPA848A**30 is rated at up to 18.0 SEER2 and 13.0 EER2 for cooling and up to 8.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 432 certified matchups SEER2 ranges from 15.2-18.0.
      Is the Carrier 27TPA848A**30 good for cold climates?
      It is not cold-climate certified: none of its matchups meet the ENERGY STAR cold-climate criteria (a COP of at least 1.75 at 5°F among other limits). In places with frequent sub-zero nights, pick a cold-climate 4-ton model.
      How much does the Carrier 27TPA848A**30 cost to run per year?
      At its rated efficiency it costs about $1,258-$3,646 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,589 in Phoenix and $3,076 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 Carrier 27TPA848A**30?
      ENERGY STAR lists 432 certified combinations for this outdoor unit. The highest-rated ones use FT5BD6021X, FT5ANBD60L, FG5ANBD60L.
      What refrigerant does the Carrier 27TPA848A**30 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 $1,597/yrYou save $910/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 Carrier 27TPA848A**30
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $1,597
      Current system, per year
      $2,508
      You save per year
      $910
      Payback
      19.8 years
      Net after 10 years
      -$8,898

      Cooling $939Heating $659Electricity used: 9,984 kWhSaved vs. a minimum-efficiency heat pump: $331

      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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      See all 319 4 ton central heat pumps, ranked

      Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of September 16, 2026. How we use the data.