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HEMA vs SEA BREEZE: heat pump ratings compared

Against heat pumps of the same size and type, a typical HEMA model beats 33% and a typical SEA BREEZE model 34%. SEA BREEZE rates slightly higher overall.

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

HEMA

33%

of similar heat pumps beaten by its typical model

Well below average

5 models listed

SEA BREEZE

34%

of similar heat pumps beaten by its typical model

Well below average

4 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°FHEMA: Beats 39%SEA BREEZE: Beats 54%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FHEMA: Beats 19%SEA BREEZE: Beats 19%
  • Winter-long heating efficiencyHSPF2HEMA: Beats 43%SEA BREEZE: Beats 27%
  • Summer-long cooling efficiencySEER2HEMA: Beats 32%SEA BREEZE: Beats 39%
  • Hot-day cooling efficiencyEER2HEMA: Beats 34%SEA BREEZE: Beats 30%

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

    HEMA
    40%
    SEA BREEZE
    50%

  • Xcel CC

    HEMA
    40%
    SEA BREEZE
    50%

  • CEE Advanced

    HEMA
    0%
    SEA BREEZE
    0%

  • ENERGY STAR CC

    HEMA
    40%
    SEA BREEZE
    50%

All-around best, ductless up to 1.5 tons

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

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

HEMA

  1. 1DS-2MS1212HC231with ductless indoor unit DS-2MS1212HE231HEMA1 ton · 12,000 Btu/h · DuctlessCold-climate pick, score 58.9Meets 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
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    23.0 (SEER2)
    Good
    Hot-day cooling
    13.0 (EER2)
    Good
    65.0score / 100Heating 59 · Cooling 71
  2. 2DS-2MS0912HC240with ductless indoor unit DS-2MS0912HE240HEMA1 ton · 9,000 Btu/h · DuctlessCold-climate pick, score 39.5Meets 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
    1.90 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.5 (HSPF2)
    Below the middle
    Cooling efficiency
    23.0 (SEER2)
    Good
    Hot-day cooling
    13.0 (EER2)
    Good
    55.3score / 100Heating 40 · Cooling 71
  3. 3DS-2MS1211HC170with ductless indoor unit DS-2MS1211HE170HEMA1 ton · 11,500 Btu/h · DuctlessNot a cold-climate pick: keeps 69% of its heat at 5°FMeets none of the standards tracked here
    Heat kept at 5°F
    70% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.90 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.5 (HSPF2)
    Below the middle
    Cooling efficiency
    17.0 (SEER2)
    Below the middle
    Hot-day cooling
    9.5 (EER2)
    Below the middle
    22.1score / 100Heating 36 · Cooling 8

SEA BREEZE

  1. 19H521YOMIwith ductless indoor unit 9H521YIMISEA BREEZE1 ton · 9,000 Btu/h · DuctlessCold-climate pick, score 34.7Meets 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
    1.95 (COP at 5°F)
    Good
    Winter efficiency
    9.0 (HSPF2)
    Below the middle
    Cooling efficiency
    21.5 (SEER2)
    Good
    Hot-day cooling
    12.5 (EER2)
    Good
    44.9score / 100Heating 35 · Cooling 55
  2. 218H521ZOMIwith ductless indoor unit 18H521ZIMISEA BREEZE1.5 tons · 18,000 Btu/h · DuctlessNot a cold-climate pick: keeps 61% of its heat at 5°FMeets CEE 2025, CEE 2026
    Heat kept at 5°F
    61% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.99 (COP at 5°F)
    Good
    Winter efficiency
    9.1 (HSPF2)
    Below the middle
    Cooling efficiency
    20.2 (SEER2)
    Below the middle
    Hot-day cooling
    11.5 (EER2)
    Below the middle
    34.3score / 100Heating 33 · Cooling 35
  3. 312H521YOMIwith ductless indoor unit 12H521YIMISEA BREEZE1 ton · 12,000 Btu/h · DuctlessNot a cold-climate pick: keeps 58% of its heat at 5°FMeets none of the standards tracked here
    Heat kept at 5°F
    58% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.85 (COP at 5°F)
    Below the middle
    Winter efficiency
    8.7 (HSPF2)
    Below the middle
    Cooling efficiency
    21.3 (SEER2)
    Below the middle
    Hot-day cooling
    10.0 (EER2)
    Below the middle
    26.4score / 100Heating 20 · Cooling 33

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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