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

      Kepler ODUMOX230-09HFN1-BW0W

      Very good cooling efficiency and below average heating efficiency for a 9,000 BTU mini-split heat pump, but not rated for cold climates.

      Ranks #179 of 395 9,000 BTU mini-splits for cooling efficiency, and costs about $238 a year to run in a mixed climate like Atlanta.

      SEER2
      25.0 Cooling efficiency over a season
      Very good · beats 83%
      HSPF2
      9.9 Heating efficiency over a season
      Below average · beats 35%
      EER2
      14.5 Cooling efficiency on a 95°F day
      Very good · beats 88%
      Heat at 5°F
      6,800 BTU/h68% of its 47°F output
      Very good · beats 74%

      A good fit if…

      • You want low cooling bills - its SEER2 beats 83% of mini-splits.
      • 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.
      • You mainly need heat - its HSPF2 is below average for mini-splits.
      • 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
      BrandKepler
      Outdoor unit modelODUMOX230-09HFN1-BW0W
      SeriesIDU 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 sinceMay 20, 2024
      Last certifiedMarch 4, 2025
      Cooling
      SEER2Seasonal efficiency, higher is better25.0 (range 25.0)
      EER2Efficiency at 95°F outdoors14.5
      Cooling capacity9,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better9.9
      Capacity at 47°F10,000 BTU/h
      Capacity at 17°F6,200 BTU/h
      Capacity at 5°F6,800 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater2.16
      ENERGY STAR cold climateNo
      Heating output as it gets colder68% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with IDUMSEPB-09HRFN1-BW0W 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.
      IDUMSEPB-09HRFN1-BW0W25.014.59.96,800214610358
      Yearly running cost in 10 large cities$171-$602

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

      Questions5
      What is the SEER2 rating of the Kepler ODUMOX230-09HFN1-BW0W?
      The Kepler ODUMOX230-09HFN1-BW0W is rated at up to 25.0 SEER2 and 14.5 EER2 for cooling and up to 9.9 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
      Is the Kepler ODUMOX230-09HFN1-BW0W 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 9,000 BTU model.
      How much does the Kepler ODUMOX230-09HFN1-BW0W cost to run per year?
      At its rated efficiency it costs about $171-$602 a year in electricity in large U.S. cities, depending on climate and local rates - for example $231 in Phoenix and $519 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 Kepler ODUMOX230-09HFN1-BW0W?
      ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses IDUMSEPB-09HRFN1-BW0W.
      What refrigerant does the Kepler ODUMOX230-09HFN1-BW0W 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 $240/yrYou save $241/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 Kepler ODUMOX230-09HFN1-BW0W
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $240
      Current system, per year
      $480
      You save per year
      $241
      Payback
      14.5 years
      Net after 10 years
      -$1,094

      Cooling $127Heating $113Electricity used: 1,499 kWhSaved vs. a minimum-efficiency heat pump: $131

      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 March 4, 2025. How we use the data.