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      9,000 BTU mini-split heat pump · C28 Series

      CanAir C28SCH09H21

      Excellent cooling efficiency and very good heating efficiency for a 9,000 BTU mini-split heat pump, and certified for cold climates.

      Ranks #53 of 395 9,000 BTU mini-splits for cooling efficiency, and costs about $236 a year to run in a mixed climate like Atlanta.

      SEER2
      28.1 Cooling efficiency over a season
      Excellent · beats 97%
      HSPF2
      11.5 Heating efficiency over a season
      Very good · beats 84%
      EER2
      16.2 Cooling efficiency on a 95°F day
      Excellent · beats 97%
      Heat at 5°F
      10,600 BTU/h88% of its 47°F output
      Average · beats 48%

      A good fit if…

      • You want low cooling bills - its SEER2 beats 97% of mini-splits.
      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 10,600 BTU/h at 5°F.
      • It will heat most of the year - its HSPF2 beats 84% of mini-splits.
      • 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

      Specifications9,000 BTU, R-410A
      General
      BrandCanAir
      Also sold asKANIONco, Napoleon, Franklin
      Outdoor unit modelC28SCH09H21
      SeriesC28 Series
      TypeMini-split heat pump
      Nominal size9,000 BTU
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-410A
      Connected (smart) capableNo
      On the market sinceJuly 4, 2020
      Last certifiedJune 25, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better28.1 (range 28.1)
      EER2Efficiency at 95°F outdoors16.2
      Cooling capacity9,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better11.5
      Capacity at 47°F12,000 BTU/h
      Capacity at 17°F9,500 BTU/h
      Capacity at 5°F10,600 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.00
      ENERGY STAR cold climateYes
      Heating output as it gets colder88% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with C28SEH09H21 at the standard test temperatures, in BTU/h:

      Certified matchups1 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.
      C28SEH09H21 · cold climate28.116.211.510,600207683256
      Same unit, other model numbers3

      These model numbers have exactly the same certified ratings and matchups as the CanAir C28SCH09H21: 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$154-$610

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

      Questions6
      What is the SEER2 rating of the CanAir C28SCH09H21?
      The CanAir C28SCH09H21 is rated at up to 28.1 SEER2 and 16.2 EER2 for cooling and up to 11.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
      Is the CanAir C28SCH09H21 good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 10,600 BTU/h at 5°F with a COP of 2.00, so it is still 2.0 times as efficient as electric resistance heat at that temperature.
      How much does the CanAir C28SCH09H21 cost to run per year?
      At its rated efficiency it costs about $154-$610 a year in electricity in large U.S. cities, depending on climate and local rates - for example $217 in Phoenix and $531 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
      Is the CanAir C28SCH09H21 the same as the KANIONco KWSM-09IR410AHS28.1ODU?
      Yes, as far as the certified ratings go. ENERGY STAR lists 4 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 CanAir C28SCH09H21?
      ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses C28SEH09H21.
      What refrigerant does the CanAir C28SCH09H21 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 $230/yrYou save $284/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 C28SCH09H21
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $230
      Current system, per year
      $513
      You save per year
      $284
      Payback
      12.3 years
      Net after 10 years
      -$665

      Cooling $113Heating $117Electricity used: 1,435 kWhSaved vs. a minimum-efficiency heat pump: $171

      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 June 25, 2026. How we use the data.