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Century vs Mitsutomo: heat pump ratings compared

Against heat pumps of the same size and type, a typical Century model beats 50% and a typical Mitsutomo model 58%. Mitsutomo rates higher overall.

Covers heat pumps sold new today (R-454B and R-32 refrigerant). See older R-410A models · Updated

Century

50%

of similar heat pumps beaten by its typical model

About average

59 models listed

Mitsutomo

58%

of similar heat pumps beaten by its typical model

Above average

56 models listed

Rating by ratingEach bar is the share of same-size, same-type heat pumps that a typical model beats, so the two brands compare fairly even if they make different sizes.
  • Efficiency on a 5°F dayCOP at 5°FCentury: Beats 50%Mitsutomo: Beats 61%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FCentury: Beats 49%Mitsutomo: Beats 58%
  • Winter-long heating efficiencyHSPF2Century: Beats 52%Mitsutomo: Beats 69%
  • Summer-long cooling efficiencySEER2Century: Beats 45%Mitsutomo: Beats 57%
  • Hot-day cooling efficiencyEER2Century: Beats 53%Mitsutomo: Beats 51%

Average (50%)Dashed outline: the other brand, for comparison

Want ranks, distributions per size class and cold-weather curves? Switch to Advanced

Rebate standards

Share of each brand’s models that meet the level. Programs can have other rules too.

  • CEE 2025

    Century
    44%
    Mitsutomo
    82%

  • Xcel CC

    Century
    41%
    Mitsutomo
    75%

  • CEE Advanced

    Century
    3%
    Mitsutomo
    4%

  • ENERGY STAR CC

    Century
    32%
    Mitsutomo
    77%

All-around best, ductless 2 tons

Balances heating (5°F output and efficiency, HSPF2) and cooling (SEER2, EER2), each rating against units their size.

Showing Ductless, 2 tons (21,000–26,999 Btu/h cooling). What size is my system?

Century

  1. 1A-VHP24SA-1with ductless indoor unit B-VHP24SA-1Century2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 89.4Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    83% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.34 (COP at 5°F)
    Top 10%
    Winter efficiency
    13.5 (HSPF2)
    Top 10%
    Cooling efficiency
    21.0 (SEER2)
    Below the middle
    Hot-day cooling
    13.0 (EER2)
    Great
    76.4score / 100Heating 88 · Cooling 65

Mitsutomo

  1. 1RU-SZ24-LA-Qwith ductless indoor unit HW-UZ24-LA-QMitsutomo2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 77.9Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    71% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.15 (COP at 5°F)
    Great
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    23.5 (SEER2)
    Top 10%
    Hot-day cooling
    13.0 (EER2)
    Great
    74.3score / 100Heating 64 · Cooling 85
  2. 2HO-SZ24-LA-Qwith ductless indoor unit HW-UZ24-LA-QMitsutomo2 tons · 23,000 Btu/h · DuctlessCold-climate pick, score 89.4Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    92% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    13.3 (HSPF2)
    Top 10%
    Cooling efficiency
    22.3 (SEER2)
    Good
    Hot-day cooling
    12.5 (EER2)
    Good
    72.9score / 100Heating 77 · Cooling 69
  3. 3RO-MQ28-LA-QMitsutomo2 tons · 26,000 Btu/h · DuctlessCold-climate pick, score 41.1Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    70% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    9.5 (HSPF2)
    Below the middle
    Cooling efficiency
    23.0 (SEER2)
    Great
    Hot-day cooling
    12.2 (EER2)
    Good
    56.7score / 100Heating 41 · Cooling 72

These are certified test ratings, not a recommendation for your home. The right size comes from a load calculation by a contractor.

Next steps

The advanced view adds ranks, both brands’ models inside every size class, standout models per rating and cold-weather curves.

Open the advanced view