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      24,000 BTU mini-split heat pump · TP

      DELLA 048-C-TP-23K2V-23S-OUT

      Average cooling efficiency and below average heating efficiency for a 24,000 BTU mini-split heat pump, and certified for cold climates.

      Ranks #118 of 430 24,000 BTU mini-splits for cooling efficiency, and costs about $632 a year to run in a mixed climate like Atlanta.

      SEER2
      23.0 Cooling efficiency over a season
      Average · beats 62%
      HSPF2
      9.5 Heating efficiency over a season
      Below average · beats 24%
      EER2
      11.7 Cooling efficiency on a 95°F day
      Below average · beats 16%
      Heat at 5°F
      18,600 BTU/h74% 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 18,600 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

      Specifications24,000 BTU, R-454B
      General
      BrandDELLA
      Also sold asCOSTWAY, ROVSUN, TURBRO, VKIN, VENTAGEN, Live cool, Keystone, GARVEE, AURUS
      Outdoor unit model048-C-TP-23K2V-23S-OUT
      SeriesTP
      TypeMini-split heat pump
      Nominal size24,000 BTU
      CompressorVariable-speed units run longer at low powerContinuously variable
      RefrigerantR-454B
      Connected (smart) capableNo
      On the market sinceFebruary 1, 2026
      Last certifiedJuly 6, 2026
      Cooling
      SEER2Seasonal efficiency, higher is better23.0 (range 23.0)
      EER2Efficiency at 95°F outdoors11.7
      Cooling capacity23,000 BTU/h
      Heating
      HSPF2Seasonal efficiency, higher is better9.5
      Capacity at 47°F25,000 BTU/h
      Capacity at 17°F21,000 BTU/h
      Capacity at 5°F18,600 BTU/h
      COP at 5°F2.0 = twice as efficient as a space heater1.80
      ENERGY STAR cold climateYes
      Heating output as it gets colder74% kept at 5°F

      Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with 048-C-TP-23K2V-C-IN 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.
      048-C-TP-23K2V-C-IN · cold climate23.011.79.518,600218640161
      Same unit, other model numbers9

      These model numbers have exactly the same certified ratings and matchups as the DELLA 048-C-TP-23K2V-23S-OUT: 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$475-$1,584

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

      Questions6
      What is the SEER2 rating of the DELLA 048-C-TP-23K2V-23S-OUT?
      The DELLA 048-C-TP-23K2V-23S-OUT is rated at up to 23.0 SEER2 and 11.7 EER2 for cooling and up to 9.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
      Is the DELLA 048-C-TP-23K2V-23S-OUT good for cold climates?
      Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 18,600 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 DELLA 048-C-TP-23K2V-23S-OUT cost to run per year?
      At its rated efficiency it costs about $475-$1,584 a year in electricity in large U.S. cities, depending on climate and local rates - for example $629 in Phoenix and $1,357 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
      Is the DELLA 048-C-TP-23K2V-23S-OUT the same as the COSTWAY FP11154US-12WH?
      Yes, as far as the certified ratings go. ENERGY STAR lists 10 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 DELLA 048-C-TP-23K2V-23S-OUT?
      ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses 048-C-TP-23K2V-C-IN.
      What refrigerant does the DELLA 048-C-TP-23K2V-23S-OUT use?
      It uses R-454B.

      Running cost and savings

      Pre-filled with this model. Pick your city and what you heat with today; everything else is optional.

      Heat pump $647/yrYou save $572/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 DELLA 048-C-TP-23K2V-23S-OUT
      3. What it replaces
      4. Price replace the example with your quote
      Heat pump, per year
      $647
      Current system, per year
      $1,219
      You save per year
      $572
      Payback
      14.9 years
      Net after 10 years
      -$2,781

      Cooling $352Heating $295Electricity used: 4,042 kWhSaved vs. a minimum-efficiency heat pump: $293

      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 July 6, 2026. How we use the data.