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Ranked by winter-long heating efficiency only

Heating efficiency over a whole winter, measured with a federal test. Like miles per gallon for heating: higher means more heat per unit of electricity over the test season. The federal minimum for a new split heat pump is 7.5. This list ranks by that one rating. For the units that hold up best in the cold overall, see the cold-climate picks.

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

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

Top 10 by winter-long heating efficiency only: ductless, 2 tons

Ranked by this one rating, not an overall verdict. Every model here is the same size and type, so the numbers compare directly. Higher is better. One certified pairing per model.
  1. 1BMS500-AAS024-1CSXHDwith ductless indoor unit BMS500-AAU024-1AHWXDBosch2 tons · 24,000 Btu/h · DuctlessTop 10%13.5
  2. 237MAHAQ24AA3with ductless indoor unit 45MAHAQ24XA3CarrierAlso sold as Midea 37MAHAQ24AA3, Midea D5CSHAH24AAK, MDV MOD30-24HFN10-M1X, Arcoaire D5CSHAH24AAK2 tons · 24,000 Btu/h · DuctlessTop 10%13.5
  3. 3BZ33-HYP24OUT2-454-G3-Pwith ductless indoor unit BZ33-HYP24WALL2-454-G3-PBreeze332 tons · 24,000 Btu/h · DuctlessTop 10%13.5
  4. 4MO1HS-H24B-2Awith ductless indoor unit MSEHU-H24B-2AMidea2 tons · 24,000 Btu/h · DuctlessTop 10%13.5
  5. 5MOS24H2BH0Awith ductless indoor unit MHW24H2BHRBInnovair2 tons · 24,000 Btu/h · DuctlessTop 10%13.5
  6. 6SENA-24HF-OGwith ductless indoor unit SENA-24HF-IGGSenville2 tons · 24,000 Btu/h · DuctlessTop 10%13.5
  7. 7BMS2421HHYCwith ductless indoor unit BMC24HHYWBlueRidgeAlso listed as BXS5A24UC02 tons · 24,000 Btu/h · DuctlessTop 10%13.5
  8. 8CH-RHP24-230VOwith ductless indoor unit CH-PRO24MASTWM-230VICooper&Hunter2 tons · 24,000 Btu/h · DuctlessTop 10%13.5
  9. 9ML24HP230CALH-Owith ductless indoor unit ML24HP230CALH-IRheem (sold as Mainline)2 tons · 24,000 Btu/h · DuctlessTop 10%13.5
  10. 10O-HH-24-HP-C-230C-Owith ductless indoor unit O-24-HP-WMAH-230C-OMRCOOL2 tons · 24,000 Btu/h · DuctlessTop 10%13.5

Every ductless, 2 tons model, highest first

Top cold-climate picks, ductless 2 tons

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

Want this size class’s full distribution and peer percentiles? Switch to Advanced

What good looks like: ductless, 2 tons

Good is better than half of this size class, great is the top quarter, top is the top 10%. The scale comes from the class’s own ratings.

  • Capacity at 5°F vs 47°F

    Heating power kept at 5°F

    How much of its mild-weather heating power the unit still delivers at 5°F.

    Good
    74%+
    Great
    83%+
    Top 10%
    95%+

  • COP at 5°F

    Efficiency on a 5°F day

    How much heat the unit makes from each unit of electricity when it is 5°F outside.

    Good
    2.00+
    Great
    2.11+
    Top 10%
    2.30+

  • HSPF2

    Winter-long heating efficiency

    Heating efficiency over a whole winter, measured with a federal test.

    Good
    9.5+
    Great
    10.0+
    Top 10%
    11.0+

Next steps

The advanced view adds the all-sizes boards, each qualifier’s peer percentiles, charts of every model in each size class, and the EER2 and heat output boards.

Open the advanced view