Cowsar vs DAIZUKI heat pumps
Measured against models of the same size and duct type, DAIZUKI scores higher on 5 of the 6 ratings. Cowsar has 12 outdoor models, DAIZUKI has 12 outdoor models. Cowsar and DAIZUKI 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.
- Cowsar
- DAIZUKI
- Other ranked manufacturers
Source: AHRI Directory, NEEP · as of
| Rating | Cowsar | DAIZUKI |
|---|---|---|
| Efficiency index | 34%median — | 47%median — |
| COP at 5°F | 61% (higher)median 2.03 | 39% (higher)median 1.93 |
| Capacity retention at 5°F | 28%median 68% | 41%median 71% |
| HSPF2 | 25%median 9.0 | 47%median 10.0 |
| SEER2 | 36%median 19.8 | 61%median 22.3 |
| EER2 | 23%median 10.6 | 44%median 11.7 |
| Heating capacity at 5°F | 35%median 10,400 Btu/h | 45%median 16,900 Btu/h |
| Outdoor models | 12 | 12 |
| AHRI certifications | 12 | 12 |
Share of models meeting each standard
| Standard | Cowsar | DAIZUKI |
|---|---|---|
| CEE 2025 Tier 1 (Split ASHP) | 75%9 models | 91.7%11 models |
| CEE 2026 Tier 1 (Split ASHP) | 75%9 models | 91.7%11 models |
| CEE Advanced Tier (Split ASHP) | 0%0 models | 0%0 models |
| Xcel Energy Colorado cold-climate ASHP (2025) | 50%6 models | 75%9 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.
- Cowsar
- DAIZUKI
- 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 | Cowsar | DAIZUKI |
|---|---|---|
| Non-ducted, up to 1.5 tons | 9 · index 37% | 6 · index 50% |
| Non-ducted, 2 tons | 3 · index 24% | 2 · index 49% |
| Non-ducted, 2.5–3 tons | None | 3 · index 41% |
| Non-ducted, 3.5–4.5 tons | None | 1 · index 43% |
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 | CowsarCold-climate score, best model | DAIZUKICold-climate score, best model |
|---|---|---|
| Non-ducted, up to 1.5 tons | 47.3(50 is the typical model of its size class)SE7203P-9Kwith ductless indoor unit SE7203S-9KAlso listed as SE7203P-9K-ASZ, SE7203PW-9K-ZAZ6 of 9 models qualify · AHRI 218787879 | 68.6(50 is the typical model of its size class) (higher)DXFMT-1824-2Z5 of 6 models qualify · AHRI 217500268 |
| Non-ducted, 2 tons | None on this board (0 of 3 models qualify) | 58.0(50 is the typical model of its size class)DXTH24C526A-25with ductless indoor unit DXTH24E526A-251 of 2 models qualify · AHRI 217996674 |
| Non-ducted, 2.5–3 tons | No models in this size class | 57.5(50 is the typical model of its size class)DXFMT-2724-3Z2 of 3 models qualify · AHRI 217500269 |
| Non-ducted, 3.5–4.5 tons | No models in this size class | 32.0(50 is the typical model of its size class)DXFMT-4224-5Z1 of 1 models qualify · AHRI 217500271 |
All-around best
| Size and duct type | CowsarAll-around score, best model | DAIZUKIAll-around score, best model |
|---|---|---|
| Non-ducted, up to 1.5 tons | 39.5(50 is the typical model of its size class)SE7203P-9Kwith ductless indoor unit SE7203S-9KAlso listed as SE7203P-9K-ASZ, SE7203PW-9K-ZAZ9 of 9 models have all five ratings · AHRI 218787879 | 74.4(50 is the typical model of its size class) (higher)DXTH12C526A-25with ductless indoor unit DXTH12E526A-256 of 6 models have all five ratings · AHRI 217996672 |
| Non-ducted, 2 tons | 23.5(50 is the typical model of its size class)SE7203P-24Kwith ductless indoor unit SE7203S-24KAlso listed as SE7203PW-24K-ZAZ, SE7203P-24K-ASZ3 of 3 models have all five ratings · AHRI 218787883 | 56.1(50 is the typical model of its size class) (higher)DXTH24C526A-25with ductless indoor unit DXTH24E526A-252 of 2 models have all five ratings · AHRI 217996674 |
| Non-ducted, 2.5–3 tons | No models in this size class | 65.1(50 is the typical model of its size class)DXFMT-2724-3Z3 of 3 models have all five ratings · AHRI 217500269 |
| Non-ducted, 3.5–4.5 tons | No models in this size class | 42.9(50 is the typical model of its size class)DXFMT-4224-5Z1 of 1 models have all five ratings · AHRI 217500271 |
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 | Cowsar | DAIZUKI |
|---|---|---|
| COP at 5°F | beats 74% · 2.09SE7203S-18KAlso listed as SE7203SW-18K-ZAZ, SE7203S-18K-ASZNon-ducted, up to 1.5 tons | beats 88% · 2.25DXTH24C626A-21Non-ducted, 2 tons |
| Capacity retention at 5°F | beats 61% · 80%SE7203P-9KAlso listed as SE7203P-9K-ASZ, SE7203PW-9K-ZAZNon-ducted, up to 1.5 tons | beats 87% · 100%DXTH12C526A-25Non-ducted, up to 1.5 tons |
| HSPF2 | beats 29% · 9.0SE7203P-9KAlso listed as SE7203P-9K-ASZ, SE7203PW-9K-ZAZNon-ducted, up to 1.5 tons | beats 80% · 10.5DXFMT-2724-3ZNon-ducted, 2.5–3 tons |
| SEER2 | beats 56% · 22.0A7201P-12K-ELAlso listed as A7201PW-12K-EL, A7201PW-12K-ZAZNon-ducted, up to 1.5 tons | beats 91% · 24.0DXFMT-2724-3ZNon-ducted, 2.5–3 tons |
| EER2 | beats 28% · 11.0SE7203S-18KAlso listed as SE7203SW-18K-ZAZ, SE7203S-18K-ASZNon-ducted, up to 1.5 tons | beats 83% · 14.0DXTH12C526A-25Non-ducted, up to 1.5 tons |
| Heating capacity at 5°F | beats 73% · 12,600 Btu/hSE7203S-18KAlso listed as SE7203SW-18K-ZAZ, SE7203S-18K-ASZNon-ducted, up to 1.5 tons | beats 90% · 17,800 Btu/hDXTH18C526A-25Non-ducted, up to 1.5 tons |