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      12,000 BTU mini-split heat pump · 4C Series

      CanAir 4C25SCH12H11

      Average cooling and heating efficiency for a 12,000 BTU mini-split heat pump, but not rated for cold climates.

      Ranks #222 of 394 12,000 BTU mini-splits for cooling efficiency, and costs about $292 a year to run in a mixed climate like Atlanta.

      SEER2
      23.4 Cooling efficiency over a season
      Average · beats 68%
      HSPF2
      10.4 Heating efficiency over a season
      Average · beats 57%
      EER2
      13.0 Cooling efficiency on a 95°F day
      Average · beats 62%
      Heat at 5°F
      7,700 BTU/h64% of its 47°F output
      Very good · beats 88%

      A good fit if…

      • You want steady temperatures and quiet running - the compressor varies its speed.

      Think twice if…

      • You often see nights below 0°F - it is not cold-climate certified.

      Calculate my running cost

      Details

      Specifications12,000 BTU, R-454B
      General
      BrandCanAir
      Outdoor unit model4C25SCH12H11
      Series4C Series
      TypeMini-split heat pump
      Nominal size12,000 BTU
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-454B
      Connected (smart) capableNo
      On the market sinceNovember 1, 2025
      Last certifiedMay 28, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better23.4 (range 23.2-23.4)
      EER2Efficiency at 95°F outdoors12.5-13.0
      Cooling capacity12,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better9.5-10.4
      Capacity at 47°F12,000 BTU/h
      Capacity at 17°F8,700-10,000 BTU/h
      Capacity at 5°F7,300-7,700 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.20-2.33
      ENERGY STAR cold climateNo
      Heating output as it gets colder64% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with 4C28SEH12H11 at the standard test temperatures, in BTU/h:

      Certified matchups2 indoor units

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

      Indoor unitSEER2EER2HSPF2Heat @5°FAHRI ref.
      4C28SEH12H1123.413.09.57,700217958929
      4C25SEH12H1123.212.510.47,300217958920
      Yearly running cost in 10 large cities$242-$713

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

      Questions5
      What is the SEER2 rating of the CanAir 4C25SCH12H11?
      The CanAir 4C25SCH12H11 is rated at up to 23.4 SEER2 and 13.0 EER2 for cooling and up to 10.4 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 2 certified matchups SEER2 ranges from 23.2-23.4.
      Is the CanAir 4C25SCH12H11 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 12,000 BTU model.
      How much does the CanAir 4C25SCH12H11 cost to run per year?
      At its rated efficiency it costs about $242-$713 a year in electricity in large U.S. cities, depending on climate and local rates - for example $307 in Phoenix and $602 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 CanAir 4C25SCH12H11?
      ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated ones use 4C28SEH12H11, 4C25SEH12H11.
      What refrigerant does the CanAir 4C25SCH12H11 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 $310/yrYou save $309/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 CanAir 4C25SCH12H11
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $310
      Current system, per year
      $619
      You save per year
      $309
      Payback
      14.6 years
      Net after 10 years
      -$1,410

      Cooling $181Heating $129Electricity used: 1,936 kWhSaved vs. a minimum-efficiency heat pump: $165

      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 May 28, 2026. How we use the data.