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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, 3.5–4.5 tons

Showing Ductless, 3.5–4.5 tons (39,000–56,999 Btu/h cooling). What size is my system?

  • Efficiency on a 5°F day

    2.91

    COP at 5°F

    AOU48RLAVS4Fujitsu

    4 tons · 48,000 Btu/h · Ductless

  • Heating power kept at 5°F

    104%

    Capacity at 5°F vs 47°F

    AC042BXADCHSamsung

    3.5 tons · 42,000 Btu/h · Ductless

  • Winter-long heating efficiency

    11.5

    HSPF2

    PUMY-HP48NKMU1Mitsubishi ElectricAlso sold as Trane / Mitsubishi Electric NTXMSH48A182A; also listed as MXZ-SM48NAMHZ

    4 tons · 48,000 Btu/h · Ductless

  • Summer-long cooling efficiency

    23.4

    SEER2

    SENA/48HF/MOQSenville

    4 tons · 48,000 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