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Bluefin vs dubbll: heat pump ratings compared

Against heat pumps of the same size and type, a typical Bluefin model beats 53% and a typical dubbll model 33%. Bluefin rates higher overall.

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

Bluefin

53%

of similar heat pumps beaten by its typical model

About average

3 models listed

dubbll

33%

of similar heat pumps beaten by its typical model

Well below average

3 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°FBluefin: Beats 45%dubbll: Beats 71%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FBluefin: Beats 26%dubbll: Beats 28%
  • Winter-long heating efficiencyHSPF2Bluefin: Beats 41%dubbll: Beats 14%
  • Summer-long cooling efficiencySEER2Bluefin: Beats 73%dubbll: Beats 46%
  • Hot-day cooling efficiencyEER2Bluefin: Beats 62%dubbll: Beats 9%

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

    Bluefin
    100%
    dubbll
    0%

  • Xcel CC

    Bluefin
    67%
    dubbll
    0%

  • CEE Advanced

    Bluefin
    0%
    dubbll
    0%

  • ENERGY STAR CC

    Bluefin
    67%
    dubbll
    0%

Top cold-climate picks, ductless 3.5–4.5 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, 3.5–4.5 tons (39,000–56,999 Btu/h cooling). What size is my system?

Bluefin

No ductless, 3.5–4.5 tons model from Bluefin.

dubbll

No ductless, 3.5–4.5 tons model from dubbll.

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