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Coast Air vs Live cool: heat pump ratings compared

Against heat pumps of the same size and type, a typical Coast Air model beats 67% and a typical Live cool model 57%. Coast Air rates higher overall.

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

Coast Air

67%

of similar heat pumps beaten by its typical model

Well above average

4 models listed

Live cool

57%

of similar heat pumps beaten by its typical model

Above 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°FCoast Air: Beats 76%Live cool: Beats 44%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FCoast Air: Beats 29%Live cool: Beats 37%
  • Winter-long heating efficiencyHSPF2Coast Air: Beats 75%Live cool: Beats 57%
  • Summer-long cooling efficiencySEER2Coast Air: Beats 72%Live cool: Beats 74%
  • Hot-day cooling efficiencyEER2Coast Air: Beats 75%Live cool: Beats 63%

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

    Coast Air
    100%
    Live cool
    100%

  • Xcel CC

    Coast Air
    75%
    Live cool
    100%

  • CEE Advanced

    Coast Air
    0%
    Live cool
    0%

  • ENERGY STAR CC

    Coast Air
    75%
    Live cool
    90%

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?

Coast Air

  1. 1A-CAD09-0Bwith ductless indoor unit B-CAD09-0BCoast Air1 ton · 9,000 Btu/h · DuctlessCold-climate pick, score 70.6Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    73% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.16 (COP at 5°F)
    Great
    Winter efficiency
    11.5 (HSPF2)
    Top 10%
    Cooling efficiency
    23.6 (SEER2)
    Great
    Hot-day cooling
    14.0 (EER2)
    Great
    75.6score / 100Heating 71 · Cooling 81
  2. 2A-CAD18-1Bwith ductless indoor unit B-CAD18-1BCoast Air1.5 tons · 18,000 Btu/h · DuctlessCold-climate pick, score 73.1Meets 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
    2.44 (COP at 5°F)
    Top 10%
    Winter efficiency
    11.5 (HSPF2)
    Top 10%
    Cooling efficiency
    22.5 (SEER2)
    Good
    Hot-day cooling
    13.7 (EER2)
    Great
    73.3score / 100Heating 73 · Cooling 73
  3. 3A-CAD12-0Bwith ductless indoor unit B-CAD12-0BCoast Air1 ton · 12,000 Btu/h · DuctlessCold-climate pick, score 57.5Meets 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
    2.09 (COP at 5°F)
    Good
    Winter efficiency
    10.2 (HSPF2)
    Great
    Cooling efficiency
    23.5 (SEER2)
    Great
    Hot-day cooling
    12.5 (EER2)
    Good
    62.0score / 100Heating 58 · Cooling 67

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

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