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Bosch vs COSTWAY: heat pump ratings compared

Against heat pumps of the same size and type, a typical Bosch model beats 65% and a typical COSTWAY model 48%. 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

COSTWAY

48%

of similar heat pumps beaten by its typical model

About average

3 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%COSTWAY: Beats 21%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FBosch: Beats 60%COSTWAY: Beats 33%
  • Winter-long heating efficiencyHSPF2Bosch: Beats 69%COSTWAY: Beats 46%
  • Summer-long cooling efficiencySEER2Bosch: Beats 70%COSTWAY: Beats 76%
  • Hot-day cooling efficiencyEER2Bosch: Beats 58%COSTWAY: Beats 50%

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%
    COSTWAY
    100%

  • Xcel CC

    Bosch
    64%
    COSTWAY
    33%

  • CEE Advanced

    Bosch
    2%
    COSTWAY
    0%

  • ENERGY STAR CC

    Bosch
    30%
    COSTWAY
    33%

Top cold-climate picks, ductless 2.5–3 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, 2.5–3 tons (27,000–38,999 Btu/h cooling). What size is my system?

Bosch

  1. 1BMS500-AAM036-1CSXHCBosch3 tons · 36,000 Btu/h · DuctlessKeeps 97% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    97% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.90 (COP at 5°F)
    Good
    Seasonal efficiency
    10.3 (HSPF2)
    Great
    79.3score / 100
  2. 2BMS500-AAM027-1CSXHBBosch2.5 tons · 28,000 Btu/h · DuctlessKeeps 98% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    98% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.85 (COP at 5°F)
    Good
    Seasonal efficiency
    9.0 (HSPF2)
    Below the middle
    62.8score / 100
  3. 3BMS500-AAM027-1CSXHCBosch2.5 tons · 28,000 Btu/h · DuctlessKeeps 89% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    89% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.6 (HSPF2)
    Top 10%
    61.4score / 100

COSTWAY

None of COSTWAY’s ductless, 2.5–3 tons models qualifies.

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