ADP vs ISLANDAIRE heat pumps
Measured against models of the same size and duct type, ADP scores higher on 6 of the 6 ratings. ADP has 15 outdoor models, ISLANDAIRE has 15 outdoor models. ADP and ISLANDAIRE 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.
- ADP
- ISLANDAIRE
- Other ranked manufacturers
Source: AHRI Directory, NEEP · as of
| Rating | ADP | ISLANDAIRE |
|---|---|---|
| Efficiency index | 49% (higher)median — | 17% (higher)median — |
| COP at 5°F | 35% (higher)median 1.86 | 22% (higher)median 1.67 |
| Capacity retention at 5°F | 86% (higher)median 96% | 17% (higher)median 56% |
| HSPF2 | 51% (higher)median 8.5 | 5% (higher)median 6.6 |
| SEER2 | 37% (higher)median 15.2 | 19% (higher)median 14.4 |
| EER2 | 43% (higher)median 11.0 | 20% (higher)median 10.4 |
| Heating capacity at 5°F | 84% (higher)median 33,000 Btu/h | 33% (higher)median 6,900 Btu/h |
| Outdoor models | 15 | 15 |
| AHRI certifications | 259 | 15 |
Share of models meeting each standard
| Standard | ADP | ISLANDAIRE |
|---|---|---|
| CEE 2025 Tier 1 (Split ASHP) | 26.7%4 models | 0%0 models |
| CEE 2026 Tier 1 (Split ASHP) | 26.7%4 models | 0%0 models |
| CEE Advanced Tier (Split ASHP) | 6.7%1 models | 0%0 models |
| Xcel Energy Colorado cold-climate ASHP (2025) | 86.7%13 models | 0%0 models |
| DOE Cold Climate Heat Pump Challenge | 6.7%1 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.
- ADP
- ISLANDAIRE
- 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 | ADP | ISLANDAIRE |
|---|---|---|
| Ducted, up to 1.5 tons | 3 · index 45% | 14 · index 18% |
| Ducted, 2 tons | 4 · index 44% | 1 · index 11% |
| Ducted, 2.5–3 tons | 3 · index 43% | None |
| Ducted, 3.5–4.5 tons | 5 · index 58% | None |
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 | ADPCold-climate score, best model | ISLANDAIRECold-climate score, best model |
|---|---|---|
| Ducted, up to 1.5 tons | 57.1(50 is the typical model of its size class) (higher)KUSXA181Awith ducted air handler V36H***P12*+TXV+TD2 of 2 models qualify · AHRI 217350899 | 41.3(50 is the typical model of its size class)EZMB10L9A1S95AA3 of 14 models qualify · AHRI 218722968 |
| Ducted, 2 tons | 68.4(50 is the typical model of its size class)KUSXB241Awith ducted air handler FE*G32*30+TXV5 of 5 models qualify · AHRI 217730117 | None on this board (0 of 1 models qualify) |
| Ducted, 2.5–3 tons | 54.9(50 is the typical model of its size class)KUSXB361Awith ducted air handler FC*G32*36+TXV+TD3 of 3 models qualify · AHRI 217730111 | No models in this size class |
| Ducted, 3.5–4.5 tons | 66.4(50 is the typical model of its size class)KUSXA482Awith ducted air handler HG48*60+TXV+TD5 of 5 models qualify · AHRI 217198710 | No models in this size class |
All-around best
| Size and duct type | ADPAll-around score, best model | ISLANDAIREAll-around score, best model |
|---|---|---|
| Ducted, up to 1.5 tons | 44.7(50 is the typical model of its size class) (higher)KUSXA181Awith ducted air handler V36H***P12*+TXV+TD2 of 2 models have all five ratings · AHRI 217350899 | 36.3(50 is the typical model of its size class)EZMB10L9A1S95AA14 of 14 models have all five ratings · AHRI 218722968 |
| Ducted, 2 tons | 53.2(50 is the typical model of its size class) (higher)KUSXB241Awith ducted air handler FE*G32*30+TXV4 of 4 models have all five ratings · AHRI 217730117 | 11.2(50 is the typical model of its size class)EZVV24L**1N*7A*1 of 1 models have all five ratings · AHRI 218807233 |
| Ducted, 2.5–3 tons | 53.4(50 is the typical model of its size class)KUSXA361Awith ducted air handler V36H175P15*+TXV+TD4 of 4 models have all five ratings · AHRI 217350909 | No models in this size class |
| Ducted, 3.5–4.5 tons | 65.1(50 is the typical model of its size class)KUSXA422Awith ducted air handler HG48*60+TXV+TD5 of 5 models have all five ratings · AHRI 217198708 | 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 | ADP | ISLANDAIRE |
|---|---|---|
| COP at 5°F | beats 77% · 2.12KUSXB241ADucted, up to 1.5 tons | beats 89% · 2.32EZMB10L9A1S95AADucted, up to 1.5 tons |
| Capacity retention at 5°F | beats 100% · 128%KUSXA301ADucted, 2 tons | beats 41% · 72%EZMB10L5A1S95AADucted, up to 1.5 tons |
| HSPF2 | beats 73% · 9.1KUSXA482ADucted, 3.5–4.5 tons | beats 13% · 7.5EZMB10L5A1S95AADucted, up to 1.5 tons |
| SEER2 | beats 50% · 16.0KUSXA422ADucted, 3.5–4.5 tons | beats 51% · 16.4EZMB10L9A1S95AADucted, up to 1.5 tons |
| EER2 | beats 67% · 11.7KUSXA422ADucted, 3.5–4.5 tons | beats 31% · 11.1EZVV12L8*Also listed as EZVV09L2, EZVV09L8, EZVV15L2, EZVV15L8Ducted, up to 1.5 tons |
| Heating capacity at 5°F | beats 100% · 24,000 Btu/hKUSXB241ADucted, up to 1.5 tons | beats 58% · 11,100 Btu/hEZVV18L8*Also listed as EZVV24L3, EZVV24L8Ducted, up to 1.5 tons |