BHI vs DIAMONDAIR heat pumps
Measured against models of the same size and duct type, DIAMONDAIR scores higher on 6 of the 6 ratings. BHI has 5 outdoor models, DIAMONDAIR has 25 outdoor models. BHI and DIAMONDAIR have no QMID on file and are 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.
- BHI
- DIAMONDAIR
- Other ranked manufacturers
Source: AHRI Directory, NEEP · as of
| Rating | BHI | DIAMONDAIR |
|---|---|---|
| Efficiency index | 36%median — | 42%median — |
| COP at 5°F | 19%median 1.80 | 30%median 1.82 |
| Capacity retention at 5°F | 33%median 65% | 34%median 62% |
| HSPF2 | 17%median 8.0 | 42%median 7.5 |
| SEER2 | 27%median 19.0 | 38%median 14.3 |
| EER2 | 18%median 9.0 | 53%median 11.4 |
| Heating capacity at 5°F | 36%median 14,850 Btu/h | 37%median 13,800 Btu/h |
| Outdoor models | 5 | 25 |
| AHRI certifications | 5 | 74 |
Share of models meeting each standard
| Standard | BHI | DIAMONDAIR |
|---|---|---|
| CEE 2025 Tier 1 (Split ASHP) | 20%1 models | 36%9 models |
| CEE 2026 Tier 1 (Split ASHP) | 20%1 models | 28%7 models |
| CEE Advanced Tier (Split ASHP) | 0%0 models | 0%0 models |
| Xcel Energy Colorado cold-climate ASHP (2025) | 20%1 models | 24%6 models |
| DOE Cold Climate Heat Pump Challenge | 0%0 models | 0%0 models |
| ENERGY STAR Cold Climate | 20%1 models | 0%0 models |
Sizes and duct types offered
Models in each peer group, with the efficiency index of those models against the rest of the group.
- BHI
- DIAMONDAIR
- 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 | BHI | DIAMONDAIR |
|---|---|---|
| Ducted, up to 1.5 tons | None | 2 · index 59% |
| Ducted, 2 tons | None | 2 · index 12% |
| Ducted, 2.5–3 tons | None | 6 · index 40% |
| Ducted, 3.5–4.5 tons | None | 6 · index 31% |
| Ducted, 5 tons and up | None | 1 · index 19% |
| Non-ducted, up to 1.5 tons | 3 · index 48% | 7 · index 47% |
| Non-ducted, 2 tons | 1 · index — | 2 · index 40% |
| Non-ducted, 2.5–3 tons | 1 · index 23% | 2 · index 60% |
| Non-ducted, 3.5–4.5 tons | None | 1 · index 40% |
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 | BHICold-climate score, best model | DIAMONDAIRCold-climate score, best model |
|---|---|---|
| Ducted, up to 1.5 tons | No models in this size class | 52.0(50 is the typical model of its size class)DF18M2Z21 of 2 models qualify · AHRI 210857278 |
| Ducted, 2 tons | No models in this size class | None on this board (0 of 2 models qualify) |
| Ducted, 2.5–3 tons | No models in this size class | 57.4(50 is the typical model of its size class)DF30M2Z31 of 6 models qualify · AHRI 210857281 |
| Ducted, 3.5–4.5 tons | No models in this size class | None on this board (0 of 6 models qualify) |
| Ducted, 5 tons and up | No models in this size class | None on this board (0 of 1 models qualify) |
| Non-ducted, up to 1.5 tons | 39.1(50 is the typical model of its size class)BHI-12K115V-ES-USwith ductless indoor unit BHI-12K115V-ES-US1 of 3 models qualify · AHRI 212608423 | 74.8(50 is the typical model of its size class) (higher)D2009SHO2with ductless indoor unit DF2009HMSI23 of 7 models qualify · AHRI 210857265 |
| Non-ducted, 2 tons | None on this board (0 of 1 models qualify) | 86.1(50 is the typical model of its size class)D2024SHO2with ductless indoor unit DF2024CI21 of 2 models qualify · AHRI 210857272 |
| Non-ducted, 2.5–3 tons | None on this board (0 of 1 models qualify) | 49.3(50 is the typical model of its size class)DF30M2Z31 of 2 models qualify · AHRI 210857280 |
| Non-ducted, 3.5–4.5 tons | No models in this size class | None on this board (0 of 1 models qualify) |
All-around best
| Size and duct type | BHIAll-around score, best model | DIAMONDAIRAll-around score, best model |
|---|---|---|
| Ducted, up to 1.5 tons | No models in this size class | 59.4(50 is the typical model of its size class)DF18M2Z21 of 2 models have all five ratings · AHRI 210857278 |
| Ducted, 2 tons | No models in this size class | 12.4(50 is the typical model of its size class)D1424HPG21 of 2 models have all five ratings · AHRI 212586117 |
| Ducted, 2.5–3 tons | No models in this size class | 71.5(50 is the typical model of its size class)DF30M2Z34 of 6 models have all five ratings · AHRI 210857281 |
| Ducted, 3.5–4.5 tons | No models in this size class | 52.1(50 is the typical model of its size class)DF55M2Z53 of 6 models have all five ratings · AHRI 210857287 |
| Ducted, 5 tons and up | No models in this size class | 19.3(50 is the typical model of its size class)D1460HPL21 of 1 models have all five ratings · AHRI 212586122 |
| Non-ducted, up to 1.5 tons | 47.9(50 is the typical model of its size class)BHI-12K115V-ES-USwith ductless indoor unit BHI-12K115V-ES-US1 of 3 models have all five ratings · AHRI 212608423 | 84.4(50 is the typical model of its size class) (higher)D2009SHO2with ductless indoor unit DF2009HMSI27 of 7 models have all five ratings · AHRI 210857265 |
| Non-ducted, 2 tons | None on this board (0 of 1 models have all five ratings) | 70.7(50 is the typical model of its size class)D2024SHO2with ductless indoor unit DF2024HMSI22 of 2 models have all five ratings · AHRI 210857268 |
| Non-ducted, 2.5–3 tons | 23.4(50 is the typical model of its size class)BHI-T19-36K230V-USwith ductless indoor unit BHI-T19-36K230V-US1 of 1 models have all five ratings · AHRI 214797818 | 66.7(50 is the typical model of its size class) (higher)DF30M2Z32 of 2 models have all five ratings · AHRI 210857280 |
| Non-ducted, 3.5–4.5 tons | No models in this size class | 40.4(50 is the typical model of its size class)DF55M2Z51 of 1 models have all five ratings · AHRI 210857286 |
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 | BHI | DIAMONDAIR |
|---|---|---|
| COP at 5°F | beats 22% · 1.80BHI-12K115V-ES-USNon-ducted, up to 1.5 tons | beats 78% · 2.10D1612HMSOFNon-ducted, up to 1.5 tons |
| Capacity retention at 5°F | beats 53% · 73%BHI-12K115V-ES-USNon-ducted, up to 1.5 tons | beats 92% · 103%D2024SHO2Non-ducted, 2 tons |
| HSPF2 | beats 40% · 9.0BHI-12K115V-ES-USNon-ducted, up to 1.5 tons | beats 97% · 11.5D2024SHO2Non-ducted, 2 tons |
| SEER2 | beats 62% · 22.0BHI-12K115V-ES-USNon-ducted, up to 1.5 tons | beats 98% · 21.0DF30M2Z3Ducted, 2.5–3 tons |
| EER2 | beats 49% · 12.5BHI-12K115V-ES-USNon-ducted, up to 1.5 tons | beats 95% · 15.8D2009SHO2Non-ducted, up to 1.5 tons |
| Heating capacity at 5°F | beats 43% · 8,700 Btu/hBHI-12K115V-ES-USNon-ducted, up to 1.5 tons | beats 90% · 17,200 Btu/hD2018SHO2Non-ducted, up to 1.5 tons |