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Bosch vs Kepler: heat pump ratings compared

Against heat pumps of the same size and type, a typical Bosch model beats 65% and a typical Kepler model 60%. Bosch rates higher overall.

Covers older R-410A heat pumps, no longer installed new. See models sold today · Updated

Bosch

65%

of similar heat pumps beaten by its typical model

Well above average

50 models listed

Kepler

60%

of similar heat pumps beaten by its typical model

Above average

51 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 55%Kepler: Beats 50%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FBosch: Beats 60%Kepler: Beats 59%
  • Winter-long heating efficiencyHSPF2Bosch: Beats 69%Kepler: Beats 70%
  • Summer-long cooling efficiencySEER2Bosch: Beats 70%Kepler: Beats 66%
  • Hot-day cooling efficiencyEER2Bosch: Beats 58%Kepler: Beats 53%

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
    76%
    Kepler
    71%

  • Xcel CC

    Bosch
    64%
    Kepler
    57%

  • CEE Advanced

    Bosch
    2%
    Kepler
    0%

  • ENERGY STAR CC

    Bosch
    30%
    Kepler
    59%

Top cold-climate picks, ductless 2 tons

Only units that keep at least 70% of their heat at 5°F, ranked on heat kept, efficiency at 5°F and seasonal efficiency (HSPF2), against units their size.

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

Bosch

  1. 1BMS500-AAS024-1CSXHCwith ductless indoor unit BMS500-AAU024-1AHCXCBosch2 tons · 24,000 Btu/h · DuctlessKeeps 103% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    103% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Seasonal efficiency
    11.5 (HSPF2)
    Top 10%
    86.1score / 100
  2. 2BMS500-AAS024-1CSXRCwith ductless indoor unit BMS500-AAU024-1AHWXCBosch2 tons · 24,000 Btu/h · DuctlessKeeps 70% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    70% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.04 (COP at 5°F)
    Good
    Seasonal efficiency
    10.0 (HSPF2)
    Good
    60.4score / 100

Kepler

  1. 1ODUMOD30-24HFN1MU0Wwith ductless indoor unit IDUMCD1-24HRFN1-MT0W(GA)Kepler2 tons · 24,000 Btu/h · DuctlessKeeps 103% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    103% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Seasonal efficiency
    11.5 (HSPF2)
    Top 10%
    86.1score / 100
  2. 2ODUMOD33-24HFN1-MT0Wwith ductless indoor unit IDUMSEPD-24HRFN1-MU0WKepler2 tons · 24,000 Btu/h · DuctlessKeeps 70% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    70% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.04 (COP at 5°F)
    Good
    Seasonal efficiency
    10.0 (HSPF2)
    Good
    60.4score / 100

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.

Open the advanced view