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DAIZUKI vs MDX: heat pump ratings compared

Against heat pumps of the same size and type, a typical DAIZUKI model beats 47% and a typical MDX model 66%. MDX rates higher overall.

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

DAIZUKI

47%

of similar heat pumps beaten by its typical model

About average

12 models listed

MDX

66%

of similar heat pumps beaten by its typical model

Well above average

12 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°FDAIZUKI: Beats 39%MDX: Beats 81%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FDAIZUKI: Beats 41%MDX: Beats 64%
  • Winter-long heating efficiencyHSPF2DAIZUKI: Beats 47%MDX: Beats 79%
  • Summer-long cooling efficiencySEER2DAIZUKI: Beats 61%MDX: Beats 70%
  • Hot-day cooling efficiencyEER2DAIZUKI: Beats 44%MDX: Beats 46%

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

    DAIZUKI
    92%
    MDX
    92%

  • Xcel CC

    DAIZUKI
    75%
    MDX
    92%

  • CEE Advanced

    DAIZUKI
    0%
    MDX
    17%

  • ENERGY STAR CC

    DAIZUKI
    0%
    MDX
    100%

All-around best, ductless 2.5–3 tons

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

Showing Ductless, 2.5–3 tons (27,000–38,999 Btu/h cooling). What size is my system?

DAIZUKI

  1. 1DXFMT-2724-3ZDAIZUKI2.5 tons · 27,000 Btu/h · DuctlessCold-climate pick, score 57.5Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    71% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.5 (HSPF2)
    Great
    Cooling efficiency
    24.0 (SEER2)
    Top 10%
    Hot-day cooling
    12.0 (EER2)
    Good
    65.1score / 100Heating 58 · Cooling 73
  2. 2DXFMT-3624-4ZDAIZUKI3 tons · 35,000 Btu/h · DuctlessCold-climate pick, score 52.5Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    72% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    22.5 (SEER2)
    Good
    Hot-day cooling
    11.1 (EER2)
    Below the middle
    51.1score / 100Heating 53 · Cooling 50
  3. 3DXTH36C626A-17with ductless indoor unit DXTH36E626A-17DAIZUKI3 tons · 35,000 Btu/h · DuctlessNot a cold-climate pick: keeps 50% of its heat at 5°FMeets none of the standards tracked here
    Heat kept at 5°F
    51% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Winter efficiency
    8.5 (HSPF2)
    Below the middle
    Cooling efficiency
    17.0 (SEER2)
    Below the middle
    Hot-day cooling
    9.5 (EER2)
    Below the middle
    7.6score / 100Heating 7 · Cooling 8

MDX

No ductless, 2.5–3 tons model from MDX.

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.

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