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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 Ducted, 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: ducted, 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. 1RP15AY18AJ2Nwith ducted air handler PE(S,T)23JRheem (sold as RUUD)1.5 tons · 15,800 Btu/h · DuctedTop 10%150%
  2. 2KUSXA181Awith ducted air handler MSVT24***852FAALG1.5 tons · 17,400 Btu/h · DuctedBelow the middle137%
  3. 3AUW-09U3TS1with ducted air handler ADT-09UX3TBL1HisenseAlso listed as AOU-09U3T25U1 ton · 9,000 Btu/h · DuctedTop 10%133%
  4. 4UPC09CN23STG1with ducted air handler UNI09DT23STG1York (sold as Guardian)1 ton · 9,000 Btu/h · DuctedTop 10%133%
  5. 5FPHFR09A3Dwith ducted air handler FPHFD09A3DFriedrichAlso sold as Rheem FPHFR09A3D1 ton · 9,000 Btu/h · DuctedTop 10%133%
  6. 6QOS09H2BH0Awith ducted air handler QDL09H2BHWAInnovair1 ton · 9,000 Btu/h · DuctedTop 10%133%
  7. 7WP15AY18AJ2Nwith ducted air handler RE(S,T)24JRheem (sold as Weatherking)1.5 tons · 15,700 Btu/h · DuctedTop 10%131%
  8. 8SUZ-AA12NLHZ***with ducted air handler SEZ-AD12NLMitsubishi Electric1 ton · 12,000 Btu/h · DuctedTop 10%125%
  9. 9KUSXB181Awith ducted air handler MSVT24***852FAALG1.5 tons · 17,400 Btu/h · DuctedBelow the middle124%
  10. 105TWV0X24A1with indoor coil D(A,C,E)30A4J+TDR and furnace S8V2B060M4PCBTrane1.5 tons · 19,500 Btu/h · DuctedTop 10%123%

Every ducted, up to 1.5 tons model, highest first

Top cold-climate picks, ducted 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: ducted, 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
    74%+
    Great
    90%+
    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
    1.90+
    Great
    2.10+
    Top 10%
    2.32+

  • HSPF2

    Winter-long heating efficiency

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

    Good
    9.2+
    Great
    10.0+
    Top 10%
    10.6+

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