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Boltic vs CASI0: 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

Boltic

32%

of similar heat pumps beaten by its typical model

Well below average

5 models listed

CASI0

—

of similar heat pumps beaten by its typical model

Not enough rated models

5 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°FBoltic: Beats 59%CASI0: Not rated
  • Heating power kept at 5°FCapacity at 5°F vs 47°FBoltic: Beats 19%CASI0: Not rated
  • Winter-long heating efficiencyHSPF2Boltic: Beats 27%CASI0: Beats 2%
  • Summer-long cooling efficiencySEER2Boltic: Beats 35%CASI0: Beats 6%
  • Hot-day cooling efficiencyEER2Boltic: Beats 25%CASI0: Beats 11%

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

    Boltic
    40%
    CASI0
    0%

  • Xcel CC

    Boltic
    40%
    CASI0
    0%

  • CEE Advanced

    Boltic
    0%
    CASI0
    0%

  • ENERGY STAR CC

    Boltic
    0%
    CASI0
    0%

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?

Boltic

  1. 187A9KODUwith ductless indoor unit 87A9KIDUBoltic1 ton · 9,000 Btu/h · DuctlessCold-climate pick, score 34.7Meets 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
    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. 287A18KODUwith ductless indoor unit 87A18KIDUBoltic1.5 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. 387A12KODUwith ductless indoor unit 87A12KIDUBoltic1 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

CASI0

None of CASI0’s ductless, up to 1.5 tons models has all five ratings.

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