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Ranked by summer-long cooling efficiency only

Cooling efficiency over a whole summer, measured with a federal test. Like miles per gallon for cooling: higher means more cooling per unit of electricity over the test season. The federal minimum for a new split heat pump is 14.3. 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, Up to 1.5 tons (under 21,000 Btu/h cooling). What size is my system?

Top 10 by summer-long cooling efficiency only: ductless, up to 1.5 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. 137MPRAQ06AA3with ductless indoor unit 45MPHAQ06XA3CarrierAlso sold as Midea 37MPRAQ06AA3, MDV MOX430-06HFN10-M1H0.5 tons · 6,000 Btu/h · DuctlessTop 10%35.1
  2. 2MO1SS-H06B-2Awith ductless indoor unit MSESU-H06B-2AMidea0.5 tons · 6,000 Btu/h · DuctlessTop 10%35.0
  3. 3MUZ-FX06NLHZ***with ductless indoor unit MSZ-FX06NLMitsubishi ElectricAlso listed as MUZ-FX06NLHZ20.5 tons · 6,000 Btu/h · DuctlessTop 10%35.0
  4. 4BMS635SHYCwith ductless indoor unit BMS635SHYWBlueRidgeAlso listed as BXS6A06UC00.5 tons · 6,000 Btu/h · DuctlessTop 10%35.0
  5. 5ML06HP230CALH-Owith ductless indoor unit ML06HP230CALH-IRheem (sold as Mainline)0.5 tons · 6,000 Btu/h · DuctlessTop 10%35.0
  6. 6A-ZHP06SA-1with ductless indoor unit B-ZHP06SA-1Lennox (sold as Comfort-Aire)0.5 tons · 6,000 Btu/h · DuctlessTop 10%35.0
  7. 737MPRAQ09AA3with ductless indoor unit 45MPHAQ09XA3CarrierAlso sold as Midea 37MPRAQ09AA3, MDV MOX430-09HFN10-M1H1 ton · 9,000 Btu/h · DuctlessTop 10%33.5
  8. 8AOUH09KTAP1with ductless indoor unit ASUH09KTASFujitsu1 ton · 9,000 Btu/h · DuctlessTop 10%33.5
  9. 9MO1SS-H09B-2Awith ductless indoor unit MSESU-H09B-2AMidea1 ton · 9,000 Btu/h · DuctlessTop 10%33.3
  10. 10BMS933SHYCwith ductless indoor unit BMS933SHYWBlueRidgeAlso listed as BXS6A09UC01 ton · 9,000 Btu/h · DuctlessTop 10%33.3

Every ductless, up to 1.5 tons model, highest first

Top cold-climate picks, ductless up to 1.5 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, up to 1.5 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.

  • 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
    1.95+
    Great
    2.10+
    Top 10%
    2.25+

  • HSPF2

    Winter-long heating efficiency

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

    Good
    9.5+
    Great
    10.2+
    Top 10%
    11.4+

  • SEER2

    Summer-long cooling efficiency

    Cooling efficiency over a whole summer, measured with a federal test.

    Good
    21.4+
    Great
    23.5+
    Top 10%
    25.0+

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