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ADB vs Coast Air: heat pump ratings compared

Against heat pumps of the same size and type, a typical ADB model beats 63% and a typical Coast Air model 67%. Coast Air rates slightly higher overall.

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

ADB

63%

of similar heat pumps beaten by its typical model

Well above average

4 models listed

Coast Air

67%

of similar heat pumps beaten by its typical model

Well above 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°FADB: Beats 32%Coast Air: Beats 76%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FADB: Beats 63%Coast Air: Beats 29%
  • Winter-long heating efficiencyHSPF2ADB: Beats 67%Coast Air: Beats 75%
  • Summer-long cooling efficiencySEER2ADB: Beats 84%Coast Air: Beats 72%
  • Hot-day cooling efficiencyEER2ADB: Beats 61%Coast Air: Beats 75%

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

    ADB
    100%
    Coast Air
    100%

  • Xcel CC

    ADB
    100%
    Coast Air
    75%

  • CEE Advanced

    ADB
    0%
    Coast Air
    0%

  • ENERGY STAR CC

    ADB
    100%
    Coast Air
    75%

Top cold-climate picks, ductless up to 1.5 tons

Only units that keep at least 70% of their heat at 5°F, ranked on heat kept, efficiency at 5°F and seasonal efficiency (HSPF2), against units their size.

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

ADB

  1. 1DBED-T18IH3A2-E*with ductless indoor unit DBED-T18IH3A2-IADB1.5 tons · 18,000 Btu/h · DuctlessKeeps 83% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    83% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.0 (HSPF2)
    Good
    51.0score / 100
  2. 2DBED-T12IH3A1-E*with ductless indoor unit DBED-T12IH3A1-IADBAlso listed as DBED-T12IH3A2-E1 ton · 12,000 Btu/h · DuctlessKeeps 83% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    83% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.0 (HSPF2)
    Good
    51.0score / 100

Coast Air

  1. 1A-CAD18-1Bwith ductless indoor unit B-CAD18-1BCoast Air1.5 tons · 18,000 Btu/h · DuctlessKeeps 71% of its heat at 5°FMeets 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%
    Seasonal efficiency
    11.5 (HSPF2)
    Top 10%
    73.1score / 100
  2. 2A-CAD09-0Bwith ductless indoor unit B-CAD09-0BCoast Air1 ton · 9,000 Btu/h · DuctlessKeeps 73% of its heat at 5°FMeets 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
    Seasonal efficiency
    11.5 (HSPF2)
    Top 10%
    70.6score / 100
  3. 3A-CAD12-0Bwith ductless indoor unit B-CAD12-0BCoast Air1 ton · 12,000 Btu/h · DuctlessKeeps 70% of its heat at 5°FMeets 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
    Seasonal efficiency
    10.2 (HSPF2)
    Great
    57.5score / 100

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