Century vs Mitsutomo heat pumps
Measured against models of the same size and duct type, Mitsutomo scores higher on 5 of the 6 ratings. Century has 59 outdoor models, Mitsutomo has 56 outdoor models. Century and Mitsutomo have no QMID on file and are not ranked.
New to heat pump ratings? The Simple view explains them in plain words →
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.
- Century
- Mitsutomo
- Other ranked manufacturers
Source: AHRI Directory, NEEP · as of
| Rating | Century | Mitsutomo |
|---|---|---|
| Efficiency index | 50%median — | 58%median — |
| COP at 5°F | 50%median 1.98 | 61%median 2.00 |
| Capacity retention at 5°F | 49%median 63% | 58%median 78% |
| HSPF2 | 52%median 8.1 | 69%median 9.7 |
| SEER2 | 45%median 15.2 | 57%median 18.9 |
| EER2 | 53% (higher)median 11.4 | 51% (higher)median 11.7 |
| Heating capacity at 5°F | 49%median 19,000 Btu/h | 62%median 21,100 Btu/h |
| Outdoor models | 59 | 56 |
| AHRI certifications | 1,147 | 165 |
Share of models meeting each standard
| Standard | Century | Mitsutomo |
|---|---|---|
| CEE 2025 Tier 1 (Split ASHP) | 44.1%26 models | 82.1%46 models |
| CEE 2026 Tier 1 (Split ASHP) | 44.1%26 models | 78.6%44 models |
| CEE Advanced Tier (Split ASHP) | 3.4%2 models | 3.6%2 models |
| Xcel Energy Colorado cold-climate ASHP (2025) | 40.7%24 models | 75%42 models |
| DOE Cold Climate Heat Pump Challenge | 3.4%2 models | 3.6%2 models |
| ENERGY STAR Cold Climate | 32.2%19 models | 76.8%43 models |
Sizes and duct types offered
Models in each peer group, with the efficiency index of those models against the rest of the group.
- Century
- Mitsutomo
- 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 | Century | Mitsutomo |
|---|---|---|
| Ducted, up to 1.5 tons | 8 · index 72% | 11 · index 76% |
| Ducted, 2 tons | 13 · index 41% | 5 · index 69% |
| Ducted, 2.5–3 tons | 14 · index 42% | 14 · index 62% |
| Ducted, 3.5–4.5 tons | 21 · index 39% | 12 · index 66% |
| Ducted, 5 tons and up | None | 2 · index 64% |
| Non-ducted, up to 1.5 tons | 6 · index 77% | 19 · index 51% |
| Non-ducted, 2 tons | 1 · index 76% | 5 · index 48% |
| Non-ducted, 2.5–3 tons | 3 · index 67% | 8 · index 49% |
| Non-ducted, 3.5–4.5 tons | 2 · index 67% | 7 · index 42% |
| Non-ducted, 5 tons and up | 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 | CenturyCold-climate score, best model | MitsutomoCold-climate score, best model |
|---|---|---|
| Ducted, up to 1.5 tons | 86.6(50 is the typical model of its size class)A-VXP18SA-1with ducted air handler WXP18SA6 of 8 models qualify · AHRI 217482412 | 93.5(50 is the typical model of its size class) (higher)HO-SZ06-LA-Qwith ducted air handler HD-UZ06-LA-Q10 of 11 models qualify · AHRI 217162571 |
| Ducted, 2 tons | 85.7(50 is the typical model of its size class)A-VHP24SA-1with ducted air handler B-VHP24DA-17 of 14 models qualify · AHRI 217482470 | 85.7(50 is the typical model of its size class)HO-SZ24-LA-Qwith ducted air handler HD-UZ24LA-Q5 of 5 models qualify · AHRI 217162578 |
| Ducted, 2.5–3 tons | 82.5(50 is the typical model of its size class)A-VHP365A-14 of 13 models qualify · AHRI 218425166 | 83.2(50 is the typical model of its size class) (higher)HO-SG36-LA-Qwith ducted air handler HD-UG36LA-Q10 of 14 models qualify · AHRI 217162598 |
| Ducted, 3.5–4.5 tons | 82.7(50 is the typical model of its size class)A-VHP486A-18 of 21 models qualify · AHRI 218425169 | 82.7(50 is the typical model of its size class)HO-MS48-LA-Q12 of 12 models qualify · AHRI 217162519 |
| Ducted, 5 tons and up | No models in this size class | None on this board (0 of 2 models qualify) |
| Non-ducted, up to 1.5 tons | 96.7(50 is the typical model of its size class) (higher)A-VHP06SA-1with ductless indoor unit B-VHP06SA-16 of 6 models qualify · AHRI 218425153 | 94.4(50 is the typical model of its size class)HO-SZ06-LA-Qwith ductless indoor unit HJ-UZ06-LA-Q12 of 19 models qualify · AHRI 217162582 |
| Non-ducted, 2 tons | 89.4(50 is the typical model of its size class)A-VHP24SA-1with ductless indoor unit B-VHP24CA-11 of 1 models qualify · AHRI 217482468 | 89.4(50 is the typical model of its size class)HO-SZ24-LA-Qwith ductless indoor unit HC-UZ24-LA-Q5 of 5 models qualify · AHRI 217162570 |
| Non-ducted, 2.5–3 tons | 78.0(50 is the typical model of its size class)A-VHP365A-13 of 3 models qualify · AHRI 218425167 | 89.4(50 is the typical model of its size class) (higher)HO-SG36-LA-Qwith ductless indoor unit HF-UG36-LA-Q6 of 8 models qualify · AHRI 217162601 |
| Non-ducted, 3.5–4.5 tons | 73.4(50 is the typical model of its size class) (higher)A-VHP486A-12 of 2 models qualify · AHRI 218425170 | 69.9(50 is the typical model of its size class)HO-MS60-LA-Q6 of 7 models qualify · AHRI 217162523 |
| Non-ducted, 5 tons and up | No models in this size class | None on this board (0 of 1 models qualify) |
All-around best
| Size and duct type | CenturyAll-around score, best model | MitsutomoAll-around score, best model |
|---|---|---|
| Ducted, up to 1.5 tons | 86.5(50 is the typical model of its size class)A-VHP09SA-1with ducted air handler B-VHP09DA-18 of 8 models have all five ratings · AHRI 217482458 | 95.0(50 is the typical model of its size class) (higher)HO-SZ06-LA-Qwith ducted air handler HD-UZ06-LA-Q11 of 11 models have all five ratings · AHRI 217162571 |
| Ducted, 2 tons | 78.4(50 is the typical model of its size class)A-VHP24SA-1with ducted air handler B-VHP24DA-112 of 12 models have all five ratings · AHRI 217482470 | 78.8(50 is the typical model of its size class) (higher)RU-SZ24-LA-Qwith ducted air handler HD-UZ24LA-Q5 of 5 models have all five ratings · AHRI 217162558 |
| Ducted, 2.5–3 tons | 83.6(50 is the typical model of its size class)A-VHP365A-113 of 13 models have all five ratings · AHRI 218425166 | 83.6(50 is the typical model of its size class)HO-MP36-LA-Q14 of 14 models have all five ratings · AHRI 217162516 |
| Ducted, 3.5–4.5 tons | 83.9(50 is the typical model of its size class)A-VHP486A-122 of 22 models have all five ratings · AHRI 218425169 | 85.1(50 is the typical model of its size class) (higher)RO-MS48-LA-Q12 of 12 models have all five ratings · AHRI 217162504 |
| Ducted, 5 tons and up | 66.7(50 is the typical model of its size class) (higher)HSA1460S1-**Awith ducted air handler HMA60VX1*-1 of 1 models have all five ratings · AHRI 216370485 | 65.3(50 is the typical model of its size class)RU-SG60-LA-Qwith ducted air handler HD-UG60AL-Q2 of 2 models have all five ratings · AHRI 217162592 |
| Non-ducted, up to 1.5 tons | 96.2(50 is the typical model of its size class) (higher)A-VHP06SA-1with ductless indoor unit B-VHP06SA-16 of 6 models have all five ratings · AHRI 218425153 | 93.8(50 is the typical model of its size class)HO-SZ06-LA-Qwith ductless indoor unit HW-UZ06-LA-Q19 of 19 models have all five ratings · AHRI 217162538 |
| Non-ducted, 2 tons | 76.4(50 is the typical model of its size class) (higher)A-VHP24SA-1with ductless indoor unit B-VHP24SA-11 of 1 models have all five ratings · AHRI 218425157 | 74.3(50 is the typical model of its size class)RU-SZ24-LA-Qwith ductless indoor unit HW-UZ24-LA-Q5 of 5 models have all five ratings · AHRI 217162547 |
| Non-ducted, 2.5–3 tons | 78.3(50 is the typical model of its size class) (higher)A-VHP365A-13 of 3 models have all five ratings · AHRI 218425165 | 66.3(50 is the typical model of its size class)HO-MP36-LA-Q8 of 8 models have all five ratings · AHRI 217162515 |
| Non-ducted, 3.5–4.5 tons | 75.6(50 is the typical model of its size class) (higher)A-VHP486A-12 of 2 models have all five ratings · AHRI 218425168 | 62.6(50 is the typical model of its size class)HO-MS60-LA-Q7 of 7 models have all five ratings · AHRI 217162521 |
| Non-ducted, 5 tons and up | No models in this size class | 32.5(50 is the typical model of its size class)RO-MS60-LA-Q1 of 1 models have all five ratings · AHRI 217162506 |
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 | Century | Mitsutomo |
|---|---|---|
| COP at 5°F | beats 98% · 2.75SHP1448S1ADucted, 3.5–4.5 tons | beats 99% · 2.51RU-SZ12-LA-QNon-ducted, up to 1.5 tons |
| Capacity retention at 5°F | beats 98% · 126%A-VHP09SA-1Non-ducted, up to 1.5 tons | beats 98% · 126%HO-SZ09-LA-QNon-ducted, up to 1.5 tons |
| HSPF2 | beats 99% · 14.8A-VHP06SA-1Non-ducted, up to 1.5 tons | beats 99% · 11.0HO-MS48-LA-QDucted, 3.5–4.5 tons |
| SEER2 | beats 100% · 27.0A-ZHP15SA-1Ducted, up to 1.5 tons | beats 96% · 20.4RO-MS48-LA-QDucted, 3.5–4.5 tons |
| EER2 | beats 99% · 18.0A-VHP06SA-1Non-ducted, up to 1.5 tons | beats 99% · 14.4HO-SZ06-LA-QDucted, up to 1.5 tons |
| Heating capacity at 5°F | beats 98% · 19,600 Btu/hA-VXP18SA-1Ducted, up to 1.5 tons | beats 98% · 39,500 Btu/hHO-SG36-LA-QNon-ducted, 2.5–3 tons |