Air Tempo vs COMFORT MASTER heat pumps
Measured against models of the same size and duct type, Air Tempo scores higher on 5 of the 6 ratings. Air Tempo has 6 outdoor models, COMFORT MASTER has 6 outdoor models. Air Tempo and COMFORT MASTER 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.
- Air Tempo
- COMFORT MASTER
- Other ranked manufacturers
Source: AHRI Directory, NEEP · as of
| Rating | Air Tempo | COMFORT MASTER |
|---|---|---|
| Efficiency index | 64%median — | 73%median — |
| COP at 5°F | 18%median 1.80 | 84%median 2.16 |
| Capacity retention at 5°F | 86% (higher)median 99% | 58% (higher)median 79% |
| HSPF2 | 72% (higher)median 10.0 | 50% (higher)median 10.0 |
| SEER2 | 78% (higher)median 23.5 | 58% (higher)median 24.0 |
| EER2 | 60% (higher)median 12.5 | 49% (higher)median 12.0 |
| Heating capacity at 5°F | 81% (higher)median 17,800 Btu/h | 42% (higher)median 9,100 Btu/h |
| Outdoor models | 6 | 6 |
| AHRI certifications | 6 | 6 |
Share of models meeting each standard
| Standard | Air Tempo | COMFORT MASTER |
|---|---|---|
| CEE 2025 Tier 1 (Split ASHP) | 100%6 models | 66.7%4 models |
| CEE 2026 Tier 1 (Split ASHP) | 100%6 models | 66.7%4 models |
| CEE Advanced Tier (Split ASHP) | 0%0 models | 0%0 models |
| Xcel Energy Colorado cold-climate ASHP (2025) | 100%6 models | 66.7%4 models |
| DOE Cold Climate Heat Pump Challenge | 0%0 models | 0%0 models |
| ENERGY STAR Cold Climate | 100%6 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.
- Air Tempo
- COMFORT MASTER
- 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 | Air Tempo | COMFORT MASTER |
|---|---|---|
| Non-ducted, up to 1.5 tons | 4 · index 68% | 3 · index 69% |
| Non-ducted, 2 tons | 2 · index 56% | 1 · index 87% |
| Non-ducted, 2.5–3 tons | None | 2 · index — |
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 | Air TempoCold-climate score, best model | COMFORT MASTERCold-climate score, best model |
|---|---|---|
| Non-ducted, up to 1.5 tons | 62.1(50 is the typical model of its size class)ATCB12K454B-Owith ductless indoor unit ATCB12K454B-IAlso listed as ATCB12K454B-O4 of 4 models qualify · AHRI 218472383 | 79.3(50 is the typical model of its size class) (higher)CMDI18K-C2-Owith ductless indoor unit CMDI18K-C2-I3 of 3 models qualify · AHRI 217619868 |
| Non-ducted, 2 tons | 58.0(50 is the typical model of its size class)ATCB24K454B-Owith ductless indoor unit ATCB24K454B-IAlso listed as ATCB24K454B-O2 of 2 models qualify · AHRI 218472385 | 77.4(50 is the typical model of its size class) (higher)CMDI24K-C2-Owith ductless indoor unit CMDI24K-C2-I1 of 1 models qualify · AHRI 217619869 |
| Non-ducted, 2.5–3 tons | No models in this size class | None on this board (0 of 2 models qualify) |
All-around best
| Size and duct type | Air TempoAll-around score, best model | COMFORT MASTERAll-around score, best model |
|---|---|---|
| Non-ducted, up to 1.5 tons | 74.4(50 is the typical model of its size class)ATCB12K454B-Owith ductless indoor unit ATCB12K454B-IAlso listed as ATCB12K454B-O4 of 4 models have all five ratings · AHRI 218472383 | 83.0(50 is the typical model of its size class) (higher)CMDI18K-C2-Owith ductless indoor unit CMDI18K-C2-I3 of 3 models have all five ratings · AHRI 217619868 |
| Non-ducted, 2 tons | 56.1(50 is the typical model of its size class)ATCB24K454B-Owith ductless indoor unit ATCB24K454B-IAlso listed as ATCB24K454B-O2 of 2 models have all five ratings · AHRI 218472385 | 86.5(50 is the typical model of its size class) (higher)CMDI24K-C2-Owith ductless indoor unit CMDI24K-C2-I1 of 1 models have all five ratings · AHRI 217619869 |
| Non-ducted, 2.5–3 tons | No models in this size class | None on this board (0 of 2 models have all five ratings) |
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 | Air Tempo | COMFORT MASTER |
|---|---|---|
| COP at 5°F | beats 19% · 1.80ATCB12K454B-OAlso listed as ATCB12K454B-ONon-ducted, up to 1.5 tons | beats 96% · 2.21CMBI36K-C2Also listed as CMBI36K-C2-ONon-ducted, 2.5–3 tons |
| Capacity retention at 5°F | beats 87% · 100%ATCB12K454B-OAlso listed as ATCB12K454B-ONon-ducted, up to 1.5 tons | beats 73% · 85%CMDI24K-C2-ONon-ducted, 2 tons |
| HSPF2 | beats 79% · 10.5ATCB12K454B-OAlso listed as ATCB12K454B-ONon-ducted, up to 1.5 tons | beats 84% · 10.5CMDI24K-C2-ONon-ducted, 2 tons |
| SEER2 | beats 84% · 25.0ATCB12K454B-OAlso listed as ATCB12K454B-ONon-ducted, up to 1.5 tons | beats 95% · 25.0CMDI24K-C2-ONon-ducted, 2 tons |
| EER2 | beats 83% · 14.0ATCB12K454B-OAlso listed as ATCB12K454B-ONon-ducted, up to 1.5 tons | beats 96% · 14.0CMDI24K-C2-ONon-ducted, 2 tons |
| Heating capacity at 5°F | beats 90% · 17,800 Btu/hATCB18K454B-OAlso listed as ATCB18K454B-ONon-ducted, up to 1.5 tons | beats 86% · 15,000 Btu/hCMDI18K-C2-ONon-ducted, up to 1.5 tons |