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      3.5-ton central heat pump · INFINITY 24 HP with GREENSPEED INTELLIGENCE

      Carrier 25VNA448A*031

      Excellent cooling efficiency and average heating efficiency for a 3.5-ton central heat pump, and certified for cold climates.

      Ranks #7 of 138 3.5 ton central heat pumps for cooling efficiency, and costs about $1,262 a year to run in a mixed climate like Atlanta.

      SEER2
      21.0 Cooling efficiency over a season
      Excellent · beats 97%
      HSPF2
      9.0 Heating efficiency over a season
      Average · beats 54%
      EER2
      11.5 Cooling efficiency on a 95°F day
      Below average · beats 31%
      Heat at 5°F
      36,400 BTU/h78% of its 47°F output
      Very good · beats 83%

      A good fit if…

      • You want low cooling bills - its SEER2 beats 97% of central heat pumps.
      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 36,400 BTU/h at 5°F.
      • You want steady temperatures and quiet running - the compressor varies its speed.

      Think twice if…

      • You want the newest refrigerant - it uses R-410A, which is being phased down.

      Calculate my running cost

      Details

      Specifications3.5 ton, R-410A
      General
      BrandCarrier
      Also sold asBryant
      Outdoor unit model25VNA448A*031
      SeriesINFINITY 24 HP with GREENSPEED INTELLIGENCE
      TypeCentral heat pump
      Nominal size3.5 ton
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-410A
      Connected (smart) capableNo
      On the market sinceFebruary 15, 2021
      Last certifiedApril 30, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better21.0 (range 20.5-21.0)
      EER2Efficiency at 95°F outdoors11.5
      Cooling capacity43,500-44,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better9.0
      Capacity at 47°F46,500 BTU/h
      Capacity at 17°F43,500 BTU/h
      Capacity at 5°F36,200-36,400 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.26
      ENERGY STAR cold climateYes
      Heating output as it gets colder78% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with CAP**4824AL*+UI at the standard test temperatures, in BTU/h:

      Certified matchups6 indoor units

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

      Indoor unitFurnaceSEER2EER2HSPF2Heat @5°FAHRI ref.
      CAP**4824AL*+UI · cold climate58CU*A100C21**2021.011.59.036,400206788945
      CAP**4824AL*+UI · cold climate59MN7C100C21**2221.011.59.036,200213770275
      CAP**4824AL*+UI · cold climate59TN6C100C21**2221.011.59.036,200213770279
      CAP**4821AL*+UI · cold climate59MN7C100C21**2220.511.59.036,400213770265
      CAP**4821AL*+UI · cold climate59TN6C100C21**2220.511.59.036,400213770267
      CAP**4824AL*+UI · cold climate59MN7C120C24**2220.511.59.036,400213770277
      Same unit, other model numbers1

      These model numbers have exactly the same certified ratings and matchups as the Carrier 25VNA448A*031: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

      Yearly running cost in 10 large cities$981-$3,137

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

      Questions6
      What is the SEER2 rating of the Carrier 25VNA448A*031?
      The Carrier 25VNA448A*031 is rated at up to 21.0 SEER2 and 11.5 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 6 certified matchups SEER2 ranges from 20.5-21.0.
      Is the Carrier 25VNA448A*031 good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 36,400 BTU/h at 5°F with a COP of 2.26, so it is still 2.3 times as efficient as electric resistance heat at that temperature.
      How much does the Carrier 25VNA448A*031 cost to run per year?
      At its rated efficiency it costs about $981-$3,137 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,281 in Phoenix and $2,675 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
      Is the Carrier 25VNA448A*031 the same as the Bryant 284ANV048*0**B?
      Yes, as far as the certified ratings go. ENERGY STAR lists both model numbers with identical efficiency, capacity and matchups, which means the same outdoor unit sold under a different brand or with a minor variant code (voltage, colour or region). The full list is on this page.
      Which indoor units work with the Carrier 25VNA448A*031?
      ENERGY STAR lists 6 certified combinations for this outdoor unit. The highest-rated ones use CAP**4824AL*+UI, CAP**4821AL*+UI.
      What refrigerant does the Carrier 25VNA448A*031 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 $1,308/yrYou save $984/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 25VNA448A*031
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $1,308
      Current system, per year
      $2,292
      You save per year
      $984
      Payback
      16.8 years
      Net after 10 years
      -$6,658

      Cooling $729Heating $579Electricity used: 8,174 kWhSaved vs. a minimum-efficiency heat pump: $457

      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 April 30, 2026. How we use the data.