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Antarctic Star vs MBO: heat pump ratings compared

One of these brands has too few models with every rating for an overall score; see each rating below.

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

Antarctic Star

34%

of similar heat pumps beaten by its typical model

Well below average

9 models listed

MBO

—

of similar heat pumps beaten by its typical model

Not enough rated models

9 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°FAntarctic Star: Beats 62%MBO: Not rated
  • Heating power kept at 5°FCapacity at 5°F vs 47°FAntarctic Star: Beats 26%MBO: Not rated
  • Winter-long heating efficiencyHSPF2Antarctic Star: Beats 25%MBO: Beats 6%
  • Summer-long cooling efficiencySEER2Antarctic Star: Beats 38%MBO: Beats 25%
  • Hot-day cooling efficiencyEER2Antarctic Star: Beats 22%MBO: Beats 33%

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

    Antarctic Star
    78%
    MBO
    0%

  • Xcel CC

    Antarctic Star
    44%
    MBO
    0%

  • CEE Advanced

    Antarctic Star
    0%
    MBO
    0%

  • ENERGY STAR CC

    Antarctic Star
    0%
    MBO
    0%

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?

Antarctic Star

  1. 1SE7203P-9Kwith ductless indoor unit SE7203S-9KAntarctic StarAlso listed as SE7203PW-9K-ZAZ1 ton · 9,100 Btu/h · DuctlessKeeps 80% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    80% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.95 (COP at 5°F)
    Good
    Seasonal efficiency
    9.0 (HSPF2)
    Below the middle
    47.3score / 100
  2. 2SE7203S-18Kwith ductless indoor unit SE7203P-18KAntarctic StarAlso listed as SE7203SW-18K-ZAZ1.5 tons · 18,000 Btu/h · DuctlessKeeps 70% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    70% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.09 (COP at 5°F)
    Good
    Seasonal efficiency
    9.0 (HSPF2)
    Below the middle
    42.2score / 100

MBO

None of MBO’s ductless, up to 1.5 tons models qualifies.

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