ACC vs Clima Smart heat pumps
Measured against models of the same size and duct type, ACC and Clima Smart split the 6 ratings 3–3. ACC has 4 outdoor models, Clima Smart has 4 outdoor models. ACC and Clima Smart 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.
- ACC
- Clima Smart
- Other ranked manufacturers
Source: AHRI Directory, NEEP · as of
| Rating | ACC | Clima Smart |
|---|---|---|
| Efficiency index | 55%median — | 61%median — |
| COP at 5°F | 67%median 2.08 | 81%median 2.19 |
| Capacity retention at 5°F | 77% (higher)median 59% | 50% (higher)median 72% |
| HSPF2 | 55% (higher)median 8.6 | 47% (higher)median 9.0 |
| SEER2 | 32%median 15.3 | 62%median 22.0 |
| EER2 | 12%median 8.6 | 64%median 12.8 |
| Heating capacity at 5°F | 79% (higher)median 35,600 Btu/h | 51% (higher)median 10,885 Btu/h |
| Outdoor models | 4 | 4 |
| AHRI certifications | 5 | 4 |
Share of models meeting each standard
| Standard | ACC | Clima Smart |
|---|---|---|
| CEE 2025 Tier 1 (Split ASHP) | 0%0 models | 100%4 models |
| CEE 2026 Tier 1 (Split ASHP) | 0%0 models | 100%4 models |
| CEE Advanced Tier (Split ASHP) | 0%0 models | 0%0 models |
| Xcel Energy Colorado cold-climate ASHP (2025) | 0%0 models | 75%3 models |
| DOE Cold Climate Heat Pump Challenge | 0%0 models | 0%0 models |
| ENERGY STAR Cold Climate | 0%0 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.
- ACC
- Clima Smart
- 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 | ACC | Clima Smart |
|---|---|---|
| Ducted, 2.5–3 tons | 1 · index — | None |
| Ducted, 3.5–4.5 tons | 1 · index — | None |
| Ducted, 5 tons and up | 1 · index 55% | None |
| Non-ducted, 2.5–3 tons | 1 · index — | None |
| Non-ducted, up to 1.5 tons | None | 3 · index 64% |
| Non-ducted, 2 tons | None | 1 · index 53% |
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 | ACCCold-climate score, best model | Clima SmartCold-climate score, best model |
|---|---|---|
| Ducted, 2.5–3 tons | None on this board (0 of 1 models qualify) | No models in this size class |
| Ducted, 3.5–4.5 tons | None on this board (0 of 1 models qualify) | No models in this size class |
| Ducted, 5 tons and up | None on this board (0 of 1 models qualify) | No models in this size class |
| Non-ducted, up to 1.5 tons | No models in this size class | 68.8(50 is the typical model of its size class)MCH12-CS-S23-230V-Owith ductless indoor unit MCH12-CS-S23-230V-I3 of 3 models qualify · AHRI 213148996 |
| Non-ducted, 2 tons | No models in this size class | None on this board (0 of 1 models qualify) |
| Non-ducted, 2.5–3 tons | None on this board (0 of 1 models qualify) | No models in this size class |
All-around best
| Size and duct type | ACCAll-around score, best model | Clima SmartAll-around score, best model |
|---|---|---|
| Ducted, 2.5–3 tons | None on this board (0 of 1 models have all five ratings) | No models in this size class |
| Ducted, 3.5–4.5 tons | None on this board (0 of 1 models have all five ratings) | No models in this size class |
| Ducted, 5 tons and up | 54.5(50 is the typical model of its size class)MSH603E18MCAAwith ducted air handler MST363E18ADAA1 of 1 models have all five ratings · AHRI 203991110 | No models in this size class |
| Non-ducted, up to 1.5 tons | No models in this size class | 70.8(50 is the typical model of its size class)MCH12-CS-S23-230V-Owith ductless indoor unit MCH12-CS-S23-230V-I3 of 3 models have all five ratings · AHRI 213148996 |
| Non-ducted, 2 tons | No models in this size class | 53.0(50 is the typical model of its size class)MCH24-CS-S23-Owith ductless indoor unit MCH24-CS-S23-I1 of 1 models have all five ratings · AHRI 211257106 |
| Non-ducted, 2.5–3 tons | None on this board (0 of 1 models have all five ratings) | No models in this size class |
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 | ACC | Clima Smart |
|---|---|---|
| COP at 5°F | beats 67% · 2.08MSH603E18MCAADucted, 5 tons and up | beats 89% · 2.21MCH18-CS-S23-ONon-ducted, up to 1.5 tons |
| Capacity retention at 5°F | beats 73% · 59%MSH603E18MCAADucted, 5 tons and up | beats 61% · 76%MCH12-CS-S23-230V-ONon-ducted, up to 1.5 tons |
| HSPF2 | beats 80% · 9.3MSH483E18MCAADucted, 3.5–4.5 tons | beats 57% · 9.5MCH12-CS-S23-230V-ONon-ducted, up to 1.5 tons |
| SEER2 | beats 54% · 15.4MSH603E18MCAADucted, 5 tons and up | beats 73% · 23.0MCH12-CS-S23-230V-ONon-ducted, up to 1.5 tons |
| EER2 | beats 16% · 9.0MSH603E18MCAADucted, 5 tons and up | beats 68% · 13.0MCH18-CS-S23-ONon-ducted, up to 1.5 tons |
| Heating capacity at 5°F | beats 78% · 35,600 Btu/hMSH603E18MCAADucted, 5 tons and up | beats 73% · 12,600 Btu/hMCH18-CS-S23-ONon-ducted, up to 1.5 tons |