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Live cool vs SLOMIN'S: heat pump ratings compared

Against heat pumps of the same size and type, a typical Live cool model beats 57% and a typical SLOMIN'S model 36%. Live cool rates higher overall.

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

Live cool

57%

of similar heat pumps beaten by its typical model

Above average

10 models listed

SLOMIN'S

36%

of similar heat pumps beaten by its typical model

Well below average

10 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°FLive cool: Beats 44%SLOMIN'S: Beats 39%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FLive cool: Beats 37%SLOMIN'S: Beats 43%
  • Winter-long heating efficiencyHSPF2Live cool: Beats 57%SLOMIN'S: Beats 37%
  • Summer-long cooling efficiencySEER2Live cool: Beats 74%SLOMIN'S: Beats 45%
  • Hot-day cooling efficiencyEER2Live cool: Beats 63%SLOMIN'S: Beats 17%

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

    Live cool
    100%
    SLOMIN'S
    80%

  • Xcel CC

    Live cool
    100%
    SLOMIN'S
    60%

  • CEE Advanced

    Live cool
    0%
    SLOMIN'S
    0%

  • ENERGY STAR CC

    Live cool
    90%
    SLOMIN'S
    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?

Live cool

  1. 1KWSM-12IR454BHS24Rwith ductless indoor unit LWSM-12IR454BHS24RLive coolAlso listed as LWSM-12IR454BHS24R1 ton · 12,000 Btu/h · DuctlessCold-climate pick, score 59.5Meets 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
    24.0 (SEER2)
    Great
    Hot-day cooling
    13.0 (EER2)
    Good
    67.7score / 100Heating 60 · Cooling 76
  2. 2KWSM-12IR454BHS23LRwith ductless indoor unit LWSM-12IR454BHS23LRLive coolAlso listed as LWSM-12IR454BHS23LR1 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
  3. 3KWSM-09IR454BHS24Rwith ductless indoor unit LWSM-09IR454BHS24RLive coolAlso listed as LWSM-09IR454BHS24R1 ton · 9,000 Btu/h · DuctlessCold-climate pick, score 35.8Meets 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
    1.84 (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
    53.5score / 100Heating 36 · Cooling 71

SLOMIN'S

  1. 1AC116718CZSLOMIN'S1.5 tons · 20,000 Btu/h · DuctlessCold-climate pick, score 45.3Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    80% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    8.5 (HSPF2)
    Below the middle
    Cooling efficiency
    20.0 (SEER2)
    Below the middle
    Hot-day cooling
    10.5 (EER2)
    Below the middle
    36.0score / 100Heating 45 · Cooling 27
  2. 2AC1167Z12with ductless indoor unit AC1167Z12SLOMIN'S1 ton · 12,000 Btu/h · DuctlessCold-climate pick, score 38.5Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    76% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.5 (HSPF2)
    Below the middle
    Cooling efficiency
    20.0 (SEER2)
    Below the middle
    Hot-day cooling
    11.2 (EER2)
    Below the middle
    34.5score / 100Heating 39 · Cooling 30

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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