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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 2 tons

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

Showing Ductless, 2 tons (21,000–26,999 Btu/h cooling). What size is my system?

Coast Air

  1. 1A-CAD24-1Bwith ductless indoor unit B-CAD24-1BCoast Air2 tons · 24,000 Btu/h · DuctlessNot a cold-climate pick: keeps 67% of its heat at 5°FMeets CEE 2025, CEE 2026
    Heat kept at 5°F
    67% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    9.5 (HSPF2)
    Below the middle
    Cooling efficiency
    22.7 (SEER2)
    Good
    Hot-day cooling
    12.7 (EER2)
    Good
    56.2score / 100Heating 38 · Cooling 74

Live cool

  1. 1KWSM-24IR454BHS23Rwith ductless indoor unit LWSM-24IR454BHS23RLive coolAlso listed as LWSM-24IR454BHS23R2 tons · 23,000 Btu/h · DuctlessCold-climate pick, score 37.7Meets 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
    23.0 (SEER2)
    Great
    Hot-day cooling
    11.7 (EER2)
    Below the middle
    48.8score / 100Heating 38 · Cooling 60

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