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

      Elios DEA09HOS28230E8

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

      Ranks #162 of 395 9,000 BTU mini-splits for cooling efficiency, and costs about $209 a year to run in a mixed climate like Atlanta.

      SEER2
      25.0 Cooling efficiency over a season
      Very good · beats 83%
      HSPF2
      12.0 Heating efficiency over a season
      Very good · beats 89%
      EER2
      15.6 Cooling efficiency on a 95°F day
      Excellent · beats 94%
      Heat at 5°F
      10,800 BTU/h85% of its 47°F output
      Below average · beats 27%

      A good fit if…

      • You want low cooling bills - its SEER2 beats 83% 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
      BrandElios
      Outdoor unit modelDEA09HOS28230E8
      SeriesDE-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 sinceJanuary 26, 2019
      Last certifiedMay 12, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better25.0 (range 20.2-25.0)
      EER2Efficiency at 95°F outdoors13.0-15.6
      Cooling capacity9,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better10.3-12.0
      Capacity at 47°F9,800-11,500 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 heater1.59-1.90
      ENERGY STAR cold climateYes
      Heating output as it gets colder85% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with DE09HIW23230E3 at the standard test temperatures, in BTU/h:

      Certified matchups4 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.
      DE09HIW23230E3 ELIOS25.015.611.09,800208119828
      DUA09HICU230X5 ELIOS · cold climate20.513.010.310,000207742439
      DUA09HICU230X5 ELIOS · cold climate20.513.010.310,000207742439
      DUA09HIDU230X5 ELIOS · cold climate20.213.212.010,800207742452
      Yearly running cost in 10 large cities$170-$512

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

      Questions5
      What is the SEER2 rating of the Elios DEA09HOS28230E8?
      The Elios DEA09HOS28230E8 is rated at up to 25.0 SEER2 and 15.6 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 4 certified matchups SEER2 ranges from 20.2-25.0.
      Is the Elios DEA09HOS28230E8 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 1.90, so it is still 1.9 times as efficient as electric resistance heat at that temperature.
      How much does the Elios DEA09HOS28230E8 cost to run per year?
      At its rated efficiency it costs about $170-$512 a year in electricity in large U.S. cities, depending on climate and local rates - for example $218 in Phoenix and $434 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 Elios DEA09HOS28230E8?
      ENERGY STAR lists 4 certified combinations for this outdoor unit. The highest-rated ones use ELIOS DE09HIW23230E3, ELIOS DUA09HICU230X5, ELIOS DUA09HIDU230X5.
      What refrigerant does the Elios DEA09HOS28230E8 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 $260/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 Elios DEA09HOS28230E8
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $220
      Current system, per year
      $480
      You save per year
      $260
      Payback
      13.4 years
      Net after 10 years
      -$896

      Cooling $127Heating $93Electricity used: 1,375 kWhSaved vs. a minimum-efficiency heat pump: $151

      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 12, 2026. How we use the data.