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      30,000 BTU mini-split heat pump · Charmo

      GREE GWH30ATEXH-D6DNA1G/O

      Average cooling efficiency and below average heating efficiency for a 30,000 BTU mini-split heat pump, and certified for cold climates.

      Ranks #55 of 171 30,000 BTU mini-splits for cooling efficiency, and costs about $814 a year to run in a mixed climate like Atlanta.

      SEER2
      22.5 Cooling efficiency over a season
      Average · beats 56%
      HSPF2
      9.0 Heating efficiency over a season
      Below average · beats 10%
      EER2
      11.3 Cooling efficiency on a 95°F day
      Below average · beats 12%
      Heat at 5°F
      23,000 BTU/h70% of its 47°F output
      Below average · beats 9%

      A good fit if…

      • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 23,000 BTU/h at 5°F.
      • You want steady temperatures and quiet running - the compressor varies its speed.

      Think twice if…

      • You mainly need heat - its HSPF2 is below average for mini-splits.

      Calculate my running cost

      Details

      Specifications30,000 BTU, R-32
      General
      BrandGREE
      Outdoor unit modelGWH30ATEXH-D6DNA1G/O
      SeriesCharmo
      TypeMini-split heat pump
      Nominal size30,000 BTU
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-32
      Connected (smart) capableNo
      On the market sinceOctober 10, 2025
      Last certifiedSeptember 22, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better22.5 (range 18.5-22.5)
      EER2Efficiency at 95°F outdoors11.0-11.5
      Cooling capacity30,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better8.0-9.0
      Capacity at 47°F30,000 BTU/h
      Capacity at 17°F24,000 BTU/h
      Capacity at 5°F19,400-23,000 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater1.80
      ENERGY STAR cold climateYes
      Heating output as it gets colder70% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with GKH(30)ECXF-D6DN***/I 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.
      GKH(30)ECXF-D6DN***/I · cold climate22.511.38.521,000215413017
      GWH30ATEXH-D6DN***/I · cold climate22.011.09.023,000214797816
      GWH30AWEXH-D6DN***/I · cold climate22.011.09.023,000215725427
      GWH30AZEXH-D6DN***/I · cold climate22.011.09.023,000217970826
      GTH(30)DBXH-D6DN***/I21.011.58.019,400215413016
      GFH(30)CCXH-D6DN***/I18.511.38.520,400215413015
      Yearly running cost in 10 large cities$632-$2,023

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

      Questions5
      What is the SEER2 rating of the GREE GWH30ATEXH-D6DNA1G/O?
      The GREE GWH30ATEXH-D6DNA1G/O is rated at up to 22.5 SEER2 and 11.3 EER2 for cooling and up to 9.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 6 certified matchups SEER2 ranges from 18.5-22.5.
      Is the GREE GWH30ATEXH-D6DNA1G/O good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 23,000 BTU/h at 5°F with a COP of 1.80, so it is still 1.8 times as efficient as electric resistance heat at that temperature.
      How much does the GREE GWH30ATEXH-D6DNA1G/O cost to run per year?
      At its rated efficiency it costs about $632-$2,023 a year in electricity in large U.S. cities, depending on climate and local rates - for example $825 in Phoenix and $1,726 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 GREE GWH30ATEXH-D6DNA1G/O?
      ENERGY STAR lists 6 certified combinations for this outdoor unit. The highest-rated ones use GKH(30)ECXF-D6DN***/I, GWH30ATEXH-D6DN***/I, GWH30AWEXH-D6DN***/I.
      What refrigerant does the GREE GWH30ATEXH-D6DNA1G/O use?
      It uses 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 $843/yrYou save $704/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 GREE GWH30ATEXH-D6DNA1G/O
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $843
      Current system, per year
      $1,547
      You save per year
      $704
      Payback
      16.3 years
      Net after 10 years
      -$4,458

      Cooling $469Heating $373Electricity used: 5,267 kWhSaved vs. a minimum-efficiency heat pump: $344

      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 September 22, 2026. How we use the data.