Bosch vs ECO AC heat pumps
Measured against models of the same size and duct type, Bosch scores higher on 4 of the 6 ratings. Bosch has 50 outdoor models, ECO AC has 49 outdoor models. ECO AC has no QMID on file and is not ranked.
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CompareData as of updated · sources
Against comparable models
Each cell is the share of same-size, same-type models that the manufacturer’s typical model beats (50% is typical); the higher score is in bold. Raw medians are underneath for context: they depend on which sizes each one makes, so they are not compared.
- Bosch
- ECO AC
- Other ranked manufacturers
Source: AHRI Directory, NEEP · as of
| Rating | Bosch | ECO AC |
|---|---|---|
| Efficiency index | 65% (higher)median — · 4th ranked | 59% (higher)median — |
| COP at 5°F | 55% (higher)median 2.00 · 12th ranked | 47% (higher)median 1.90 |
| Capacity retention at 5°F | 60%median 73% · 8th ranked | 61%median 80% |
| HSPF2 | 69% (higher)median 9.3 · 4th ranked | 64% (higher)median 9.5 |
| SEER2 | 70% (higher)median 19.2 · 2nd ranked | 65% (higher)median 20.5 |
| EER2 | 58% (higher)median 11.7 · 8th ranked | 57% (higher)median 12.0 |
| Heating capacity at 5°F | 56%median 20,000 Btu/h · 12th ranked | 59%median 20,000 Btu/h |
| Outdoor models | 50 | 49 |
| AHRI certifications | 1,560 | 90 |
Share of models meeting each standard
| Standard | Bosch | ECO AC |
|---|---|---|
| CEE 2025 Tier 1 (Split ASHP) | 76%38 models | 85.7%42 models |
| CEE 2026 Tier 1 (Split ASHP) | 76%38 models | 77.6%38 models |
| CEE Advanced Tier (Split ASHP) | 2%1 models | 0%0 models |
| Xcel Energy Colorado cold-climate ASHP (2025) | 64%32 models | 73.5%36 models |
| DOE Cold Climate Heat Pump Challenge | 2%1 models | 0%0 models |
| ENERGY STAR Cold Climate | 30%15 models | 73.5%36 models |
Sizes and duct types offered
Models in each peer group, with the efficiency index of those models against the rest of the group.
- Bosch
- ECO AC
- All models of the group
Raw ratings are only placed side by side within one size and duct type, where they are comparable.
Source: AHRI Directory · as of
| Size and duct type | Bosch | ECO AC |
|---|---|---|
| Ducted, up to 1.5 tons | 11 · index 65% | 9 · index 62% |
| Ducted, 2 tons | 9 · index 72% | 5 · index 68% |
| Ducted, 2.5–3 tons | 12 · index 58% | 10 · index 57% |
| Ducted, 3.5–4.5 tons | 7 · index 68% | 5 · index 59% |
| Ducted, 5 tons and up | 5 · index 60% | None |
| Non-ducted, up to 1.5 tons | 11 · index 68% | 22 · index 57% |
| Non-ducted, 2 tons | 2 · index 81% | 5 · index 58% |
| Non-ducted, 2.5–3 tons | 10 · index 61% | 10 · index 59% |
| Non-ducted, 3.5–4.5 tons | 4 · index 58% | 2 · index 57% |
Cold-climate and all-around picks, size class by size class
Each manufacturer’s best model on each board in every size and duct type, side by side; the higher score is in bold. Both scores are 0–100 against every model of that size class (the line on each bar is 50, the typical model there), so the two compare fairly even when they make different sizes.
Cold-climate picks
| Size and duct type | BoschCold-climate score, best model | ECO ACCold-climate score, best model |
|---|---|---|
| Ducted, up to 1.5 tons | 75.2(50 is the typical model of its size class) (higher)BMS500-AAS009-1CSXHBwith ducted air handler BMS500-AAU009-1AHDXB10 of 11 models qualify · AHRI 204014467 | 70.4(50 is the typical model of its size class)EHH-O9BBwith ducted air handler EHH-D09BAAlso listed as EHH-O09BB8 of 9 models qualify · AHRI 207825494 |
| Ducted, 2 tons | 82.3(50 is the typical model of its size class) (higher)BMS500-AAS024-1CSXHBwith ducted air handler BMS500-AAU024-1AHDXB8 of 8 models qualify · AHRI 204014470 | 80.3(50 is the typical model of its size class)EHH-O24BAwith ducted air handler EHH-D24BAAlso listed as EHH-O24BB4 of 4 models qualify · AHRI 206902027 |
| Ducted, 2.5–3 tons | 89.0(50 is the typical model of its size class) (higher)BOVD-36HDN1-M20Gwith indoor coil D(A,C,E)36C44+TDR and furnace BGH96M100C5B5 of 12 models qualify · AHRI 215375438 | 74.7(50 is the typical model of its size class)EHI-O36BAHwith ducted air handler EHI-V36BA9 of 11 models qualify · AHRI 211253518 |
| Ducted, 3.5–4.5 tons | 88.1(50 is the typical model of its size class) (higher)BOVA-60HDN1-M20Gwith ducted air handler L(E,G)M48G45 of 8 models qualify · AHRI 212675690 | 74.9(50 is the typical model of its size class)EMH-5O48BBH4 of 5 models qualify · AHRI 213088007 |
| Ducted, 5 tons and up | 70.2(50 is the typical model of its size class)BRB-60HWD1N1-M19Also listed as BRBA-60HWD1N1-M182 of 5 models qualify · AHRI 202680590 | No models in this size class |
| Non-ducted, up to 1.5 tons | 89.3(50 is the typical model of its size class) (higher)BMS500-AAS009-1CSXRCwith ductless indoor unit BMS500-AAU006-1AHWXC7 of 11 models qualify · AHRI 207759993 | 80.2(50 is the typical model of its size class)EHH-O9BBwith ductless indoor unit EHH-W09BBAlso listed as EHH-O09BB16 of 22 models qualify · AHRI 207825490 |
| Non-ducted, 2 tons | 86.1(50 is the typical model of its size class) (higher)BMS500-AAS024-1CSXHCwith ductless indoor unit BMS500-AAU024-1AHCXC2 of 2 models qualify · AHRI 207760018 | 76.1(50 is the typical model of its size class)EMH-3O24KBA3 of 5 models qualify · AHRI 215420705 |
| Non-ducted, 2.5–3 tons | 79.3(50 is the typical model of its size class) (higher)BMS500-AAM036-1CSXHC3 of 10 models qualify · AHRI 207760039 | 73.7(50 is the typical model of its size class)EMH-5O42KBA8 of 10 models qualify · AHRI 215420703 |
| Non-ducted, 3.5–4.5 tons | 76.2(50 is the typical model of its size class)BMS500-AAM048-1CSXHC1 of 4 models qualify · AHRI 207760042 | 80.5(50 is the typical model of its size class) (higher)EMH-5O48BBH1 of 2 models qualify · AHRI 213088006 |
All-around best
| Size and duct type | BoschAll-around score, best model | ECO ACAll-around score, best model |
|---|---|---|
| Ducted, up to 1.5 tons | 85.2(50 is the typical model of its size class) (higher)BMS500-AAS009-1CSXHCwith ducted air handler BMS500-AAU009-1AHDXB11 of 11 models have all five ratings · AHRI 207760001 | 78.5(50 is the typical model of its size class)EHH-O18BBwith ducted air handler EHH-D18BA9 of 9 models have all five ratings · AHRI 207825496 |
| Ducted, 2 tons | 87.9(50 is the typical model of its size class) (higher)BOVA-36HDN1-M20Gwith ducted air handler AE(D,N,U)+CM36B34+TDR9 of 9 models have all five ratings · AHRI 213885831 | 83.8(50 is the typical model of its size class)EHH-O24BAwith ducted air handler EHH-D24BAAlso listed as EHH-O24BB5 of 5 models have all five ratings · AHRI 206902027 |
| Ducted, 2.5–3 tons | 85.5(50 is the typical model of its size class) (higher)BOVD-36HDN1-M20Gwith indoor coil D(A,C,E)36C44+TDR and furnace BGH96M100C5B11 of 12 models have all five ratings · AHRI 215375438 | 74.6(50 is the typical model of its size class)EMH-3O27BBH10 of 10 models have all five ratings · AHRI 210586155 |
| Ducted, 3.5–4.5 tons | 88.4(50 is the typical model of its size class) (higher)BOVA-60HDN1-M20Gwith ducted air handler L(E,G)M48G46 of 7 models have all five ratings · AHRI 212675690 | 82.0(50 is the typical model of its size class)EMH-5O48BBH5 of 5 models have all five ratings · AHRI 213088007 |
| Ducted, 5 tons and up | 75.1(50 is the typical model of its size class)BRB-60HWD1N1-M19Also listed as BRBA-60HWD1N1-M185 of 5 models have all five ratings · AHRI 202680590 | No models in this size class |
| Non-ducted, up to 1.5 tons | 92.0(50 is the typical model of its size class) (higher)BMS500-AAS009-1CSXRCwith ductless indoor unit BMS500-AAU006-1AHWXC11 of 11 models have all five ratings · AHRI 207759993 | 88.7(50 is the typical model of its size class)EHP-O09KBAwith ductless indoor unit EHP-W09KBA22 of 22 models have all five ratings · AHRI 215416013 |
| Non-ducted, 2 tons | 84.3(50 is the typical model of its size class) (higher)BMS500-AAS024-1CSXHCwith ductless indoor unit BMS500-AAU024-1AHWXC2 of 2 models have all five ratings · AHRI 207759997 | 76.3(50 is the typical model of its size class)EHP-O24KBAwith ductless indoor unit EHP-W24KBA5 of 5 models have all five ratings · AHRI 215416011 |
| Non-ducted, 2.5–3 tons | 82.8(50 is the typical model of its size class) (higher)BMS500-AAM036-1CSXHC8 of 10 models have all five ratings · AHRI 207760039 | 70.8(50 is the typical model of its size class)EMH-4O36BBH10 of 10 models have all five ratings · AHRI 210586157 |
| Non-ducted, 3.5–4.5 tons | 77.9(50 is the typical model of its size class) (higher)BMS500-AAM048-1CSXHC3 of 4 models have all five ratings · AHRI 207760042 | 73.8(50 is the typical model of its size class)EMH-5O48BBH2 of 2 models have all five ratings · AHRI 213088006 |
Standout model on each rating
Each manufacturer’s model that beats the largest share of comparable models on the rating; the higher share is in bold.
| Rating | Bosch | ECO AC |
|---|---|---|
| COP at 5°F | beats 99% · 3.03BOVD-36HDN1-M20GDucted, 2.5–3 tons | beats 96% · 2.38EHH-O18BBNon-ducted, up to 1.5 tons |
| Capacity retention at 5°F | beats 100% · 126%BOVD-36HDN1-M20GDucted, 2.5–3 tons | beats 99% · 144%EHP-O09KBANon-ducted, up to 1.5 tons |
| HSPF2 | beats 98% · 13.6BMS500-AAS009-1CSXRCNon-ducted, up to 1.5 tons | beats 98% · 11.2EHH-O24BAAlso listed as EHH-O24BBDucted, 2 tons |
| SEER2 | beats 99% · 24.6BMS500-AAM027-1CSXRCNon-ducted, 2.5–3 tons | beats 99% · 20.9EMH-5O48BBHDucted, 3.5–4.5 tons |
| EER2 | beats 98% · 16.2BMS500-AAS009-1CSXHCNon-ducted, up to 1.5 tons | beats 99% · 16.6EHP-O09KBANon-ducted, up to 1.5 tons |
| Heating capacity at 5°F | beats 96% · 20,000 Btu/hBMS500-AAM018-1CSXHCNon-ducted, up to 1.5 tons | beats 96% · 20,000 Btu/hEMH-2O18BBHNon-ducted, up to 1.5 tons |