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Record holders, size class by size class

The highest certified value on each single rating, in each size class. A record is one rating, not an overall verdict; for that, see the cold-climate picks. A record across all sizes would mostly go to the smallest units, so each record here is for one size and type.

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

Records: ductless, 2 tons

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

  • Efficiency on a 5°F day

    3.59

    COP at 5°F

    ARUN024GSS4LG

    2 tons · 24,000 Btu/h · Ductless

  • Heating power kept at 5°F

    131%

    Capacity at 5°F vs 47°F

    AR24CSDAEWKXSamsung

    2 tons · 21,000 Btu/h · Ductless

  • Winter-long heating efficiency

    11.5

    HSPF2

    SENA/24HF/OQSenville

    2 tons · 24,000 Btu/h · Ductless

  • Summer-long cooling efficiency

    24.7

    SEER2

    PUZ-A24NHA7***Mitsubishi ElectricAlso sold as Trane / Mitsubishi Electric TRUZA0241HA70

    2 tons · 24,000 Btu/h · Ductless

These are certified test ratings, not a recommendation for your home. The right size comes from a load calculation by a contractor.

Smaller brands worth a look

Brands with fewer than 25 models whose typical model beats more similar heat pumps than the 5 largest brands’ typical model, on at least one rating.

  • Ecoer

    Efficiency on a 5°F day: its typical model beats 74% of similar heat pumps, against 54% for the 5 largest brands.

Next steps

The advanced view has the all-sizes records with runners-up, the best of every size class in one table and the full list of smaller brands.

Open the advanced view