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Bosch vs ECO AC: heat pump ratings compared

Against heat pumps of the same size and type, a typical Bosch model beats 62% and a typical ECO AC model 59%. Bosch rates slightly higher overall.

Covers heat pumps sold new today (R-454B and R-32 refrigerant). See older R-410A models · Updated

Bosch

62%

of similar heat pumps beaten by its typical model

Well above average

47 models listed

ECO AC

59%

of similar heat pumps beaten by its typical model

Above average

22 models listed

Rating by ratingEach bar is the share of same-size, same-type heat pumps that a typical model beats, so the two brands compare fairly even if they make different sizes.
  • Efficiency on a 5°F dayCOP at 5°FBosch: Beats 63%ECO AC: Beats 44%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FBosch: Beats 62%ECO AC: Beats 68%
  • Winter-long heating efficiencyHSPF2Bosch: Beats 68%ECO AC: Beats 47%
  • Summer-long cooling efficiencySEER2Bosch: Beats 65%ECO AC: Beats 64%
  • Hot-day cooling efficiencyEER2Bosch: Beats 55%ECO AC: Beats 68%

Average (50%)Dashed outline: the other brand, for comparison

Want ranks, distributions per size class and cold-weather curves? Switch to Advanced

Rebate standards

Share of each brand’s models that meet the level. Programs can have other rules too.

  • CEE 2025

    Bosch
    94%
    ECO AC
    96%

  • Xcel CC

    Bosch
    83%
    ECO AC
    96%

  • CEE Advanced

    Bosch
    15%
    ECO AC
    14%

  • ENERGY STAR CC

    Bosch
    85%
    ECO AC
    100%

All-around best, ductless 2 tons

Balances heating (5°F output and efficiency, HSPF2) and cooling (SEER2, EER2), each rating against units their size.

Showing Ductless, 2 tons (21,000–26,999 Btu/h cooling). What size is my system?

Bosch

  1. 1BMS500-AAS024-1CSXRDwith ductless indoor unit BMS500-AAU024-1AHWXDBosch2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 84.5Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    78% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.54 (COP at 5°F)
    Top 10%
    Winter efficiency
    11.7 (HSPF2)
    Top 10%
    Cooling efficiency
    23.0 (SEER2)
    Great
    Hot-day cooling
    14.0 (EER2)
    Top 10%
    86.8score / 100Heating 85 · Cooling 89
  2. 2BMS500-AAS024-1CSXHDwith ductless indoor unit BMS500-AAU024-1AHWXDBosch2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 89.4Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    83% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.34 (COP at 5°F)
    Top 10%
    Winter efficiency
    13.5 (HSPF2)
    Top 10%
    Cooling efficiency
    21.0 (SEER2)
    Below the middle
    Hot-day cooling
    13.0 (EER2)
    Great
    76.4score / 100Heating 88 · Cooling 65
  3. 3BOHA-24RTB-M18SBosch2 tons · 23,200 Btu/h · DuctlessCold-climate pick, score 39.8Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    78% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.5 (HSPF2)
    Below the middle
    Cooling efficiency
    17.3 (SEER2)
    Below the middle
    Hot-day cooling
    11.0 (EER2)
    Below the middle
    29.5score / 100Heating 40 · Cooling 19

ECO AC

  1. 1EHP-O24KBBwith ductless indoor unit EHP-W24KBBECO AC2 tons · 22,000 Btu/h · DuctlessCold-climate pick, score 60.1Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    100% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    27.0 (SEER2)
    Top 10%
    Hot-day cooling
    14.0 (EER2)
    Top 10%
    78.1score / 100Heating 60 · Cooling 96
  2. 2EMH-3O24KBBECO AC2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 67.5Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    90% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    21.0 (SEER2)
    Below the middle
    Hot-day cooling
    13.3 (EER2)
    Great
    67.6score / 100Heating 68 · Cooling 68
  3. 3EHH-O24KBBwith ductless indoor unit EHH-W24KBBECO AC2 tons · 21,000 Btu/h · DuctlessCold-climate pick, score 33.3Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    78% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.0 (HSPF2)
    Below the middle
    Cooling efficiency
    23.5 (SEER2)
    Top 10%
    Hot-day cooling
    12.0 (EER2)
    Good
    52.7score / 100Heating 33 · Cooling 72

These are certified test ratings, not a recommendation for your home. The right size comes from a load calculation by a contractor.

Next steps

The advanced view adds ranks, both brands’ models inside every size class, standout models per rating and cold-weather curves.

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