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      9,000 BTU mini-split heat pump · A-series

      KERR A-KMH09SV-1

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

      Ranks #48 of 395 9,000 BTU mini-splits for cooling efficiency, and costs about $222 a year to run in a mixed climate like Atlanta.

      SEER2
      28.1 Cooling efficiency over a season
      Excellent · beats 97%
      HSPF2
      12.0 Heating efficiency over a season
      Very good · beats 89%
      EER2
      16.2 Cooling efficiency on a 95°F day
      Excellent · beats 97%
      Heat at 5°F
      10,800 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 10,800 BTU/h at 5°F.
      • It will heat most of the year - its HSPF2 beats 89% 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
      BrandKERR
      Also sold asComfort-Aire
      Outdoor unit modelA-KMH09SV-1
      SeriesA-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 sinceDecember 18, 2019
      Last certifiedJune 13, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better28.1 (range 20.2-28.1)
      EER2Efficiency at 95°F outdoors13.0-16.2
      Cooling capacity9,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better10.3-12.0
      Capacity at 47°F9,800-12,000 BTU/h
      Capacity at 17°F7,100-10,100 BTU/h
      Capacity at 5°F9,800-10,800 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater1.59-2.00
      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 B-KMH09SV-1 at the standard test temperatures, in BTU/h:

      Certified matchups6 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.
      B-KMH09SV-1 · cold climate28.116.211.510,600207657394
      B-KMH09SU-1 COMFORT-AIRE25.015.611.09,800208141181
      B-KMH09SU-125.015.611.09,800208141193
      B-KMH09SU-1 Comfort Aire25.015.611.09,800217101868
      B-KMH09CU-1 · cold climate20.513.010.310,000210568249
      B-KMH09DU-1 · cold climate20.213.212.010,800210568255
      Yearly running cost in 10 large cities$153-$566

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

      Questions5
      What is the SEER2 rating of the KERR A-KMH09SV-1?
      The KERR A-KMH09SV-1 is rated at up to 28.1 SEER2 and 16.2 EER2 for cooling and up to 12.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 6 certified matchups SEER2 ranges from 20.2-28.1.
      Is the KERR A-KMH09SV-1 good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 10,800 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 KERR A-KMH09SV-1 cost to run per year?
      At its rated efficiency it costs about $153-$566 a year in electricity in large U.S. cities, depending on climate and local rates - for example $210 in Phoenix and $490 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 KERR A-KMH09SV-1?
      ENERGY STAR lists 6 certified combinations for this outdoor unit. The highest-rated ones use B-KMH09SV-1, COMFORT-AIRE B-KMH09SU-1, B-KMH09SU-1.
      What refrigerant does the KERR A-KMH09SV-1 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 $220/yrYou save $285/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 KERR A-KMH09SV-1
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $220
      Current system, per year
      $505
      You save per year
      $285
      Payback
      12.3 years
      Net after 10 years
      -$651

      Cooling $113Heating $107Electricity used: 1,375 kWhSaved vs. a minimum-efficiency heat pump: $173

      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 13, 2026. How we use the data.