Bestcold vs ROVSUN heat pumps
Measured against models of the same size and duct type, ROVSUN scores higher on 5 of the 6 ratings. Bestcold has 7 outdoor models, ROVSUN has 21 outdoor models. Bestcold and ROVSUN 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.
- Bestcold
- ROVSUN
- Other ranked manufacturers
Source: AHRI Directory, NEEP · as of
| Rating | Bestcold | ROVSUN |
|---|---|---|
| Efficiency index | 22%median — | 32%median — |
| COP at 5°F | 19%median 1.80 | 22%median 1.80 |
| Capacity retention at 5°F | 30%median 70% | 34%median 66% |
| HSPF2 | 19% (higher)median 8.5 | 15% (higher)median 8.0 |
| SEER2 | 27%median 19.0 | 30%median 19.0 |
| EER2 | 16%median 10.0 | 21%median 10.0 |
| Heating capacity at 5°F | 32%median 8,600 Btu/h | 45%median 11,600 Btu/h |
| Outdoor models | 7 | 21 |
| AHRI certifications | 7 | 21 |
Share of models meeting each standard
| Standard | Bestcold | ROVSUN |
|---|---|---|
| CEE 2025 Tier 1 (Split ASHP) | 71.4%5 models | 33.3%7 models |
| CEE 2026 Tier 1 (Split ASHP) | 57.1%4 models | 33.3%7 models |
| CEE Advanced Tier (Split ASHP) | 0%0 models | 0%0 models |
| Xcel Energy Colorado cold-climate ASHP (2025) | 57.1%4 models | 23.8%5 models |
| DOE Cold Climate Heat Pump Challenge | 0%0 models | 0%0 models |
| ENERGY STAR Cold Climate | 0%0 models | 14.3%3 models |
Sizes and duct types offered
Models in each peer group, with the efficiency index of those models against the rest of the group.
- Bestcold
- ROVSUN
- 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 | Bestcold | ROVSUN |
|---|---|---|
| Non-ducted, up to 1.5 tons | 5 · index 21% | 19 · index 33% |
| Non-ducted, 2 tons | 1 · index 25% | 1 · index — |
| Non-ducted, 2.5–3 tons | 1 · index 23% | 1 · index 28% |
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 | BestcoldCold-climate score, best model | ROVSUNCold-climate score, best model |
|---|---|---|
| Non-ducted, up to 1.5 tons | 28.4(50 is the typical model of its size class)MYTW-12HPAC1/Owith ductless indoor unit MYTW-12HPAC1/IAlso listed as MYTW-12HPAC2/O4 of 5 models qualify · AHRI 214844424 | 47.5(50 is the typical model of its size class) (higher)TSC-12HA2/I3XI23-Owith ductless indoor unit TSC-12HA2/I3XI23-I5 of 19 models qualify · AHRI 213927362 |
| Non-ducted, 2 tons | None on this board (0 of 1 models qualify) | None on this board (0 of 1 models qualify) |
| Non-ducted, 2.5–3 tons | None on this board (0 of 1 models qualify) | None on this board (0 of 1 models qualify) |
All-around best
| Size and duct type | BestcoldAll-around score, best model | ROVSUNAll-around score, best model |
|---|---|---|
| Non-ducted, up to 1.5 tons | 23.6(50 is the typical model of its size class)MYTW-12HPAC1/Owith ductless indoor unit MYTW-12HPAC1/IAlso listed as MYTW-12HPAC2/O5 of 5 models have all five ratings · AHRI 214844424 | 60.2(50 is the typical model of its size class) (higher)TSC-12HA2/I3XI23-Owith ductless indoor unit TSC-12HA2/I3XI23-I10 of 19 models have all five ratings · AHRI 213927362 |
| Non-ducted, 2 tons | 24.8(50 is the typical model of its size class)MYTW-24HPAC2/Owith ductless indoor unit MYTW-24HPAC2/I1 of 1 models have all five ratings · AHRI 214844428 | None on this board (0 of 1 models have all five ratings) |
| Non-ducted, 2.5–3 tons | 23.4(50 is the typical model of its size class)MYTW-36HPAC2/Owith ductless indoor unit MYTW-36HPAC2/I1 of 1 models have all five ratings · AHRI 214844429 | 28.1(50 is the typical model of its size class) (higher)TMSC-27HA2/I2XI19-O1 of 1 models have all five ratings · AHRI 213927368 |
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 | Bestcold | ROVSUN |
|---|---|---|
| COP at 5°F | beats 26% · 1.80MYTW-24HPAC2/ONon-ducted, 2 tons | beats 22% · 1.80TSC-18HA2/I2AXI19-OAlso listed as TSC-18HA2/I2XI19-ONon-ducted, up to 1.5 tons |
| Capacity retention at 5°F | beats 46% · 70%MYTW-12HPAC1/OAlso listed as MYTW-12HPAC2/ONon-ducted, up to 1.5 tons | beats 60% · 76%TSC-12HA2/I3XI23-ONon-ducted, up to 1.5 tons |
| HSPF2 | beats 25% · 8.5MYTW-36HPAC2/ONon-ducted, 2.5–3 tons | beats 57% · 9.5TSC-12HA2/I3XI23-ONon-ducted, up to 1.5 tons |
| SEER2 | beats 35% · 19.0MYTW-36HPAC2/ONon-ducted, 2.5–3 tons | beats 73% · 23.0TSC-09HA1/I3XI22-ONon-ducted, up to 1.5 tons |
| EER2 | beats 25% · 10.0MYTW-24HPAC2/ONon-ducted, 2 tons | beats 68% · 13.0TSC-12HA2/I3XI23-ONon-ducted, up to 1.5 tons |
| Heating capacity at 5°F | beats 61% · 11,600 Btu/hMYTW-18HPAC2/ONon-ducted, up to 1.5 tons | beats 78% · 13,000 Btu/hTMSC-18HA2/I2XI20-ONon-ducted, up to 1.5 tons |