BROCK vs ZOKOP heat pumps
Measured against models of the same size and duct type, ZOKOP scores higher on 4 of the 6 ratings. BROCK has 36 outdoor models, ZOKOP has 37 outdoor models. BROCK and ZOKOP 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.
- BROCK
- ZOKOP
- Other ranked manufacturers
Source: AHRI Directory, NEEP · as of
| Rating | BROCK | ZOKOP |
|---|---|---|
| Efficiency index | 35% (higher)median — | 34% (higher)median — |
| COP at 5°F | 41% (higher)median 1.80 | 34% (higher)median 1.80 |
| Capacity retention at 5°F | 13%median 41% | 33%median 72% |
| HSPF2 | 24%median 6.7 | 46%median 9.5 |
| SEER2 | 24%median 13.4 | 36%median 20.0 |
| EER2 | 64% (higher)median 11.1 | 26% (higher)median 10.5 |
| Heating capacity at 5°F | 17%median 17,000 Btu/h | 40%median 9,500 Btu/h |
| Outdoor models | 36 | 37 |
| AHRI certifications | 3,770 | 37 |
Share of models meeting each standard
| Standard | BROCK | ZOKOP |
|---|---|---|
| CEE 2025 Tier 1 (Split ASHP) | 19.4%7 models | 67.6%25 models |
| CEE 2026 Tier 1 (Split ASHP) | 11.1%4 models | 67.6%25 models |
| CEE Advanced Tier (Split ASHP) | 0%0 models | 0%0 models |
| Xcel Energy Colorado cold-climate ASHP (2025) | 0%0 models | 56.8%21 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.
- BROCK
- ZOKOP
- 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 | BROCK | ZOKOP |
|---|---|---|
| Ducted, up to 1.5 tons | 2 · index 45% | None |
| Ducted, 2 tons | 4 · index 35% | None |
| Ducted, 2.5–3 tons | 11 · index 35% | None |
| Ducted, 3.5–4.5 tons | 17 · index 31% | None |
| Ducted, 5 tons and up | 2 · index 61% | None |
| Non-ducted, up to 1.5 tons | None | 27 · index 31% |
| Non-ducted, 2 tons | None | 3 · index 35% |
| Non-ducted, 2.5–3 tons | None | 6 · index 52% |
| Non-ducted, 3.5–4.5 tons | None | 1 · index 27% |
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 | BROCKCold-climate score, best model | ZOKOPCold-climate score, best model |
|---|---|---|
| Ducted, up to 1.5 tons | None on this board (0 of 2 models qualify) | No models in this size class |
| Ducted, 2 tons | None on this board (0 of 4 models qualify) | No models in this size class |
| Ducted, 2.5–3 tons | None on this board (0 of 11 models qualify) | No models in this size class |
| Ducted, 3.5–4.5 tons | None on this board (0 of 17 models qualify) | No models in this size class |
| Ducted, 5 tons and up | None on this board (0 of 2 models qualify) | No models in this size class |
| Non-ducted, up to 1.5 tons | No models in this size class | 68.6(50 is the typical model of its size class)TMSC-18HA2/I2XI20B-OAlso listed as TMSC-18HA2/I2XI20B-O14 of 27 models qualify · AHRI 216020699 |
| Non-ducted, 2 tons | No models in this size class | None on this board (0 of 3 models qualify) |
| Non-ducted, 2.5–3 tons | No models in this size class | 57.5(50 is the typical model of its size class)TMSC-27HA2/I2XI19B-OAlso listed as TMSC-27HA2/I2XI19B-O6 of 6 models qualify · AHRI 216020700 |
| Non-ducted, 3.5–4.5 tons | No models in this size class | 24.7(50 is the typical model of its size class)ZP42M2/19-O1 of 1 models qualify · AHRI 218035871 |
All-around best
| Size and duct type | BROCKAll-around score, best model | ZOKOPAll-around score, best model |
|---|---|---|
| Ducted, up to 1.5 tons | 48.3(50 is the typical model of its size class)PH5SAN519**AA*with indoor coil CAA**1917AM and furnace PG92MSAA42060B2 of 2 models have all five ratings · AHRI 217702474 | No models in this size class |
| Ducted, 2 tons | 60.6(50 is the typical model of its size class)PH8TAN524**AA*with indoor coil CAA**3721AM and furnace PG80MSUA48060B4 of 4 models have all five ratings · AHRI 215647876 | No models in this size class |
| Ducted, 2.5–3 tons | 66.7(50 is the typical model of its size class)PH8TAN536**AA*with ducted air handler PF5TNBD60L11 of 11 models have all five ratings · AHRI 215628948 | No models in this size class |
| Ducted, 3.5–4.5 tons | 72.7(50 is the typical model of its size class)PH8TAN548**AA*with ducted air handler QFVA5D6021X16 of 16 models have all five ratings · AHRI 218695444 | No models in this size class |
| Ducted, 5 tons and up | 80.2(50 is the typical model of its size class)PH8TAN560**AA*with ducted air handler PF5TNBD60L3 of 3 models have all five ratings · AHRI 215560743 | No models in this size class |
| Non-ducted, up to 1.5 tons | No models in this size class | 72.2(50 is the typical model of its size class)TMSC-18HA2/I2XI20B-OAlso listed as TMSC-18HA2/I2XI20B-O27 of 27 models have all five ratings · AHRI 216020699 |
| Non-ducted, 2 tons | No models in this size class | 39.1(50 is the typical model of its size class)TSC-24HA2/I2XI18B-Owith ductless indoor unit TSC-24HA2/I2XI18B-IAlso listed as TSC-24HA2/I2XI18B-O3 of 3 models have all five ratings · AHRI 216020695 |
| Non-ducted, 2.5–3 tons | No models in this size class | 65.1(50 is the typical model of its size class)TMSC-27HA2/I2XI19B-OAlso listed as TMSC-27HA2/I2XI19B-O6 of 6 models have all five ratings · AHRI 216020700 |
| Non-ducted, 3.5–4.5 tons | No models in this size class | 27.2(50 is the typical model of its size class)ZP42M2/19-O1 of 1 models have all five ratings · AHRI 218035871 |
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 | BROCK | ZOKOP |
|---|---|---|
| COP at 5°F | beats 92% · 2.48PH8TAN536**AA*Ducted, 2.5–3 tons | beats 71% · 2.10TSC-24HA2/I2XI18B-OAlso listed as TSC-24HA2/I2XI18B-ONon-ducted, 2 tons |
| Capacity retention at 5°F | beats 41% · 52%PH5SAN560**AA*Also listed as PH5SAP560**AADucted, 5 tons and up | beats 61% · 80%TMSC-18HA2/I2XI20B-OAlso listed as TMSC-18HA2/I2XI20B-ONon-ducted, up to 1.5 tons |
| HSPF2 | beats 58% · 8.5PH8TAN548**AA*Ducted, 3.5–4.5 tons | beats 80% · 10.5TMSC-27HA2/I2XI19B-OAlso listed as TMSC-27HA2/I2XI19B-ONon-ducted, 2.5–3 tons |
| SEER2 | beats 81% · 17.5PH8TAN560**AA*Ducted, 5 tons and up | beats 91% · 24.0TMSC-27HA2/I2XI19B-OAlso listed as TMSC-27HA2/I2XI19B-ONon-ducted, 2.5–3 tons |
| EER2 | beats 99% · 13.5PH8TAN548**AA*Ducted, 3.5–4.5 tons | beats 70% · 13.0TMSC-18HA2/I2XI20B-OAlso listed as TMSC-18HA2/I2XI20B-ONon-ducted, up to 1.5 tons |
| Heating capacity at 5°F | beats 44% · 8,600 Btu/hPH5SAN518**AA*Ducted, up to 1.5 tons | beats 88% · 16,000 Btu/hTMSC-18HA2/I2XI20B-OAlso listed as TMSC-18HA2/I2XI20B-ONon-ducted, up to 1.5 tons |