MULTIZONE vs TUTTO KOOL heat pumps
Measured against models of the same size and duct type, MULTIZONE scores higher on 5 of the 6 ratings. MULTIZONE has 9 outdoor models, TUTTO KOOL has 9 outdoor models. MULTIZONE and TUTTO KOOL 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.
- MULTIZONE
- TUTTO KOOL
- Other ranked manufacturers
Source: AHRI Directory, NEEP · as of
| Rating | MULTIZONE | TUTTO KOOL |
|---|---|---|
| Efficiency index | 47% (higher)median — | 22% (higher)median — |
| COP at 5°F | 14%median 1.78 | 22%median 1.80 |
| Capacity retention at 5°F | 33% (higher)median 68% | 26% (higher)median 61% |
| HSPF2 | 23% (higher)median 8.5 | 10% (higher)median 7.8 |
| SEER2 | 31% (higher)median 18.5 | 24% (higher)median 19.0 |
| EER2 | 47% (higher)median 10.9 | 13% (higher)median 9.0 |
| Heating capacity at 5°F | 51% (higher)median 10,150 Btu/h | 38% (higher)median 11,600 Btu/h |
| Outdoor models | 9 | 9 |
| AHRI certifications | 9 | 9 |
Share of models meeting each standard
| Standard | MULTIZONE | TUTTO KOOL |
|---|---|---|
| CEE 2025 Tier 1 (Split ASHP) | 22.2%2 models | 33.3%3 models |
| CEE 2026 Tier 1 (Split ASHP) | 22.2%2 models | 22.2%2 models |
| CEE Advanced Tier (Split ASHP) | 0%0 models | 0%0 models |
| Xcel Energy Colorado cold-climate ASHP (2025) | 11.1%1 models | 22.2%2 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.
- MULTIZONE
- TUTTO KOOL
- 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 | MULTIZONE | TUTTO KOOL |
|---|---|---|
| Non-ducted, up to 1.5 tons | 6 · index 47% | 5 · index 21% |
| Non-ducted, 2 tons | 2 · index — | 2 · index 25% |
| Non-ducted, 2.5–3 tons | 1 · index — | 2 · index 23% |
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 | MULTIZONECold-climate score, best model | TUTTO KOOLCold-climate score, best model |
|---|---|---|
| Non-ducted, up to 1.5 tons | 34.7(50 is the typical model of its size class) (higher)MIT12H2G31(O)with ductless indoor unit MIT12H2G31(I)1 of 6 models qualify · AHRI 9850218 | 28.4(50 is the typical model of its size class)TK1912E5CA-Owith ductless indoor unit TK1912E5CA-IAlso listed as TK1912E5CD-O2 of 5 models qualify · AHRI 213244555 |
| Non-ducted, 2 tons | None on this board (0 of 2 models qualify) | None on this board (0 of 2 models qualify) |
| Non-ducted, 2.5–3 tons | None on this board (0 of 1 models qualify) | None on this board (0 of 2 models qualify) |
All-around best
| Size and duct type | MULTIZONEAll-around score, best model | TUTTO KOOLAll-around score, best model |
|---|---|---|
| Non-ducted, up to 1.5 tons | 46.8(50 is the typical model of its size class) (higher)MIT18H2G31(O)with ductless indoor unit MIT18H2G31(I)2 of 6 models have all five ratings · AHRI 9850219 | 23.6(50 is the typical model of its size class)TK1912E5CA-Owith ductless indoor unit TK1912E5CA-IAlso listed as TK1912E5CD-O3 of 5 models have all five ratings · AHRI 213244555 |
| Non-ducted, 2 tons | None on this board (0 of 2 models have all five ratings) | 24.8(50 is the typical model of its size class)TK1924E5CD-Owith ductless indoor unit TK1924E5CD-I1 of 2 models have all five ratings · AHRI 213244557 |
| Non-ducted, 2.5–3 tons | None on this board (0 of 1 models have all five ratings) | 23.4(50 is the typical model of its size class)TK1936E5CD-Owith ductless indoor unit TK1936E5CD-I1 of 2 models have all five ratings · AHRI 213244558 |
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 | MULTIZONE | TUTTO KOOL |
|---|---|---|
| COP at 5°F | beats 22% · 1.80MIT18H2G31(O)Non-ducted, up to 1.5 tons | beats 26% · 1.80TK1924E5CD-ONon-ducted, 2 tons |
| Capacity retention at 5°F | beats 39% · 70%MIT12H2G31(O)Non-ducted, up to 1.5 tons | beats 46% · 70%TK1912E5CA-OAlso listed as TK1912E5CD-ONon-ducted, up to 1.5 tons |
| HSPF2 | beats 57% · 9.5MIT12H2G31(O)Non-ducted, up to 1.5 tons | beats 25% · 8.5TK1936E5CD-ONon-ducted, 2.5–3 tons |
| SEER2 | beats 67% · 22.5MIT18H2G31(O)Non-ducted, up to 1.5 tons | beats 35% · 19.0TK1936E5CD-ONon-ducted, 2.5–3 tons |
| EER2 | beats 80% · 13.7MIT09H2G31(O)Non-ducted, up to 1.5 tons | beats 25% · 10.0TK1924E5CD-ONon-ducted, 2 tons |
| Heating capacity at 5°F | beats 66% · 11,900 Btu/hMIT18H2G31(O)Non-ducted, up to 1.5 tons | beats 61% · 11,600 Btu/hTK1918W5CD-ONon-ducted, up to 1.5 tons |