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Bestcold vs GENERALLUX STAR: heat pump ratings compared

Against heat pumps of the same size and type, a typical Bestcold model beats 22% and a typical GENERALLUX STAR model 58%. GENERALLUX STAR rates higher overall.

Covers older R-410A heat pumps, no longer installed new. See models sold today · Updated

Bestcold

22%

of similar heat pumps beaten by its typical model

Well below average

7 models listed

GENERALLUX STAR

58%

of similar heat pumps beaten by its typical model

Above average

7 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°FBestcold: Beats 19%GENERALLUX STAR: Beats 37%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FBestcold: Beats 30%GENERALLUX STAR: Beats 69%
  • Winter-long heating efficiencyHSPF2Bestcold: Beats 19%GENERALLUX STAR: Beats 31%
  • Summer-long cooling efficiencySEER2Bestcold: Beats 27%GENERALLUX STAR: Beats 36%
  • Hot-day cooling efficiencyEER2Bestcold: Beats 16%GENERALLUX STAR: Beats 50%

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

    Bestcold
    71%
    GENERALLUX STAR
    57%

  • Xcel CC

    Bestcold
    57%
    GENERALLUX STAR
    57%

  • CEE Advanced

    Bestcold
    0%
    GENERALLUX STAR
    0%

  • ENERGY STAR CC

    Bestcold
    0%
    GENERALLUX STAR
    0%

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?

Bestcold

  1. 1MYTW-12HPAC1/Owith ductless indoor unit MYTW-12HPAC1/IBestcoldAlso listed as MYTW-12HPAC2/O1 ton · 12,000 Btu/h · DuctlessKeeps 70% of its heat at 5°FMeets 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
    1.80 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    8.5 (HSPF2)
    Below the middle
    28.4score / 100
  2. 2MYTW-09HPAC2/Owith ductless indoor unit MYTW-09HPAC2/IBestcold1 ton · 9,000 Btu/h · DuctlessKeeps 70% of its heat at 5°FMeets 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
    1.80 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    8.5 (HSPF2)
    Below the middle
    26.2score / 100
  3. 3MYTW-09HPAC1/Owith ductless indoor unit MYTW-09HPAC1/IBestcold1 ton · 9,000 Btu/h · DuctlessKeeps 70% of its heat at 5°FMeets 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
    1.75 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    8.5 (HSPF2)
    Below the middle
    20.8score / 100

GENERALLUX STAR

  1. 1GNS-12HCH23TO2with ductless indoor unit GNS-12HCH23TI2GENERALLUX STAR1 ton · 12,000 Btu/h · DuctlessKeeps 83% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    83% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.89 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    9.5 (HSPF2)
    Good
    58.2score / 100
  2. 2GNS-12HCH22TO1with ductless indoor unit GNS-12HCH22TI1GENERALLUX STAR1 ton · 12,000 Btu/h · DuctlessKeeps 80% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    80% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.85 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    9.5 (HSPF2)
    Good
    54.9score / 100
  3. 3GNS-18HCH21TO2with ductless indoor unit GNS-18HCH21TI2GENERALLUX STAR1.5 tons · 18,000 Btu/h · DuctlessKeeps 86% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    86% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    9.5 (HSPF2)
    Good
    51.4score / 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