Bosch heat pumps: how do their ratings compare?

A typical Bosch heat pump beats 62% of similar heat pumps (same size and type), which is well above average. Bosch has 47 heat pump models in this list.

Covers heat pumps sold new today (R-454B and R-32 refrigerant). See older R-410A models · Updated Oct 10, 2026

Overall score

62%

of similar heat pumps beaten by its typical model

Well above average

Ranked 3 among brands with a QMID on file. Based on 71 models with every rating.

Bosch, rating by ratingStrongest on winter-long heating efficiency (beats 68%), weakest on hot-day cooling efficiency (beats 55%).

Efficiency on a 5°F dayCOP at 5°FBeats 63%
Heating power kept at 5°FCapacity at 5°F vs 47°FBeats 62%
Winter-long heating efficiencyHSPF2Beats 68%
Summer-long cooling efficiencySEER2Beats 65%
Hot-day cooling efficiencyEER2Beats 55%

Average (50%)

Each bar: the share of similar heat pumps a typical model beats on that rating.

Want Bosch’s ranks and its models inside every size class? Switch to Advanced

Rebate standards

Share of this brand’s models that meet the efficiency levels rebate programs use. Programs can have other rules too.

94%
meet CEE 2025 Tier 1, the level many utility rebates use.
44 models. All brands: 57%.
See them
83%
meet Xcel Energy Colorado’s cold-climate rebate levels.
39 models. All brands: 53%.
See them
15%
reach the cold-climate tier: full heating output and a COP of 2.1 or more at 5°F.
7 models. All brands: 3%.
See them

Top Bosch cold-climate picks, by size

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, Up to 1.5 tons (under 21,000 Btu/h cooling). What size is my system?

8 of Bosch’s 9 models of this size and type qualify.

1BMS500-AAS009-1CSXRDwith ductless indoor unit BMS500-AAU006-1AHWXDBosch0.5 tons · 6,000 Btu/h · DuctlessKeeps 138% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
Heat kept at 5°F
138% (Capacity at 5°F vs 47°F)
Top 10%
Efficiency at 5°F
2.41 (COP at 5°F)
Top 10%
Seasonal efficiency
12.5 (HSPF2)
Top 10%
97.5score / 100
2BMS500-AAS012-1CSXHDwith ductless indoor unit BMS500-AAU012-1AHCXDBosch1 ton · 12,000 Btu/h · DuctlessKeeps 96% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
Heat kept at 5°F
96% (Capacity at 5°F vs 47°F)
Great
Efficiency at 5°F
1.99 (COP at 5°F)
Good
Seasonal efficiency
11.6 (HSPF2)
Top 10%
76.1score / 100
3BMS500-AAS018-1CSXRDwith ductless indoor unit BMS500-AAU018-1AHZXDBosch1.5 tons · 18,000 Btu/h · DuctlessKeeps 73% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
Heat kept at 5°F
73% (Capacity at 5°F vs 47°F)
Below the middle
Efficiency at 5°F
2.25 (COP at 5°F)
Great
Seasonal efficiency
12.2 (HSPF2)
Top 10%
74.2score / 100
4BMS500-AAS018-1CSXHDwith ductless indoor unit BMS500-AAU018-1AHWXDBosch1.5 tons · 18,000 Btu/h · DuctlessKeeps 100% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
Heat kept at 5°F
100% (Capacity at 5°F vs 47°F)
Great
Efficiency at 5°F
1.92 (COP at 5°F)
Below the middle
Seasonal efficiency
11.0 (HSPF2)
Great
73.8score / 100
5BMS500-AAS009-1CSXHDwith ductless indoor unit BMS500-AAU009-1AHCXDBosch1 ton · 9,000 Btu/h · DuctlessKeeps 110% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
Heat kept at 5°F
110% (Capacity at 5°F vs 47°F)
Top 10%
Efficiency at 5°F
1.84 (COP at 5°F)
Below the middle
Seasonal efficiency
12.1 (HSPF2)
Top 10%
73.3score / 100

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

What to do next

The advanced view has Bosch’s ranks on each rating, its models inside every size and type, cold-weather curves and its newest certifications.

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