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AURUS vs MDX: heat pump ratings compared

Against heat pumps of the same size and type, a typical AURUS model beats 32% 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

AURUS

32%

of similar heat pumps beaten by its typical model

Well below 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°FAURUS: Beats 41%MDX: Beats 81%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FAURUS: Beats 21%MDX: Beats 64%
  • Winter-long heating efficiencyHSPF2AURUS: Beats 35%MDX: Beats 79%
  • Summer-long cooling efficiencySEER2AURUS: Beats 31%MDX: Beats 70%
  • Hot-day cooling efficiencyEER2AURUS: Beats 27%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

    AURUS
    33%
    MDX
    92%

  • Xcel CC

    AURUS
    33%
    MDX
    92%

  • CEE Advanced

    AURUS
    0%
    MDX
    17%

  • ENERGY STAR CC

    AURUS
    33%
    MDX
    100%

Top cold-climate picks, ductless up to 1.5 tons

Only units that keep at least 70% of their heat at 5°F, ranked on heat kept, efficiency at 5°F and seasonal efficiency (HSPF2), against units their size.

Showing Ductless, Up to 1.5 tons (under 21,000 Btu/h cooling). What size is my system?

AURUS

  1. 1ARU454-H12A2/INVL-US2with ductless indoor unit ARU454-H12A2/INVL-US2AURUS1 ton · 12,000 Btu/h · DuctlessKeeps 72% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    72% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Great
    Seasonal efficiency
    10.0 (HSPF2)
    Good
    59.5score / 100
  2. 2ARU454-H12A1/INVL-US2with ductless indoor unit ARU454-H12A1/INVL-US2AURUS1 ton · 12,000 Btu/h · DuctlessKeeps 72% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    72% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Great
    Seasonal efficiency
    10.0 (HSPF2)
    Good
    58.9score / 100
  3. 3ARU454-H18A2/INVL-US2with ductless indoor unit ARU454-H18A2/INVL-US2AURUS1.5 tons · 18,000 Btu/h · DuctlessKeeps 72% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    72% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.0 (HSPF2)
    Good
    38.9score / 100

MDX

No ductless, up to 1.5 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.

Open the advanced view