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Ranked by heating power kept at 5°f only

How much of its mild-weather heating power the unit still delivers at 5°F. At 100% the unit puts out as much heat at 5°F as at 47°F in the test. Lower means less heating output in deep cold. 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 heating power kept at 5°f 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%150%
  2. 2D5CPRAH06AAKwith ductless indoor unit D5FPHAH06XAKMideaAlso sold as Arcoaire D5CPRAH06AAK0.5 tons · 6,000 Btu/h · DuctlessTop 10%150%
  3. 3MO1SS-H06B-2Awith ductless indoor unit MSESU-H06B-2AMidea0.5 tons · 6,000 Btu/h · DuctlessTop 10%150%
  4. 4BMS635SHYCwith ductless indoor unit BMS635SHYWBlueRidgeAlso listed as BXS6A06UC00.5 tons · 6,000 Btu/h · DuctlessTop 10%150%
  5. 5ML06HP230CALH-Owith ductless indoor unit ML06HP230CALH-IRheem (sold as Mainline)0.5 tons · 6,000 Btu/h · DuctlessTop 10%150%
  6. 6A-ZHP06SA-1with ductless indoor unit B-ZHP06SA-1Lennox (sold as Comfort-Aire)0.5 tons · 6,000 Btu/h · DuctlessTop 10%150%
  7. 7YRACXJ09WHAAwith ductless indoor unit YRAKXJ09PHAAYork1 ton · 9,500 Btu/h · DuctlessTop 10%147%
  8. 8AOUH09KTAP1with ductless indoor unit ASUH09KTASFujitsu1 ton · 9,000 Btu/h · DuctlessTop 10%142%
  9. 9MUZ-FX06NLHZ***with ductless indoor unit MSZ-FX06NLMitsubishi ElectricAlso listed as MUZ-FX06NLHZ20.5 tons · 6,000 Btu/h · DuctlessTop 10%140%
  10. 10MUZ-FX18NLHZ***with ductless indoor unit MSZ-FX18NLMitsubishi ElectricAlso listed as MUZ-FX18NLHZ21.5 tons · 17,200 Btu/h · DuctlessTop 10%139%

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.

  • 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
    76%+
    Great
    91%+
    Top 10%
    100%+

  • 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+

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