Skip to content
Rebate.Blue

DiamondAir vs TUTTOKOOL: heat pump ratings compared

One of these brands has too few models with every rating for an overall score; see each rating below.

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

DiamondAir

—

of similar heat pumps beaten by its typical model

Not enough rated models

7 models listed

TUTTOKOOL

27%

of similar heat pumps beaten by its typical model

Well below average

22 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°FDiamondAir: Not ratedTUTTOKOOL: Beats 46%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FDiamondAir: Not ratedTUTTOKOOL: Beats 14%
  • Winter-long heating efficiencyHSPF2DiamondAir: Beats 26%TUTTOKOOL: Beats 18%
  • Summer-long cooling efficiencySEER2DiamondAir: Beats 21%TUTTOKOOL: Beats 21%
  • Hot-day cooling efficiencyEER2DiamondAir: Beats 60%TUTTOKOOL: Beats 38%

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

    DiamondAir
    0%
    TUTTOKOOL
    0%

  • Xcel CC

    DiamondAir
    0%
    TUTTOKOOL
    0%

  • CEE Advanced

    DiamondAir
    0%
    TUTTOKOOL
    0%

  • ENERGY STAR CC

    DiamondAir
    0%
    TUTTOKOOL
    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?

DiamondAir

No ductless, up to 1.5 tons model from DiamondAir.

TUTTOKOOL

No ductless, up to 1.5 tons model from TUTTOKOOL.

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