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Ranked by heat output at 5°f only

How much heat the unit can deliver when it is 5°F outside, in Btu per hour. Useful for comparing units. Whether it is enough for a particular house takes a load calculation. 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 heat output 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. 15TWV0X24A1with indoor coil D(A,C,E)30A4J+TDR and furnace *DHMB060CCV3+LRPTrane1.5 tons · 19,500 Btu/h · DuctedTop 10%27,200 Btu/h
  2. 2KUSXA181Awith ducted air handler KNSLA181ALG1.5 tons · 18,000 Btu/h · DuctedGood25,000 Btu/h
  3. 35A6H7024A1with ducted air handler D(A,C,E)24A3J+TDRTrane (sold as American Standard)1.5 tons · 20,200 Btu/h · DuctedTop 10%25,000 Btu/h
  4. 4AOUH18KUAH1with ducted air handler ARUH18KUASFujitsu1.5 tons · 18,000 Btu/h · DuctedTop 10%24,200 Btu/h
  5. 5RP15AY18AJ2Nwith ducted air handler PE(S,T)23JRheem (sold as RUUD)1.5 tons · 15,800 Btu/h · DuctedTop 10%24,000 Btu/h
  6. 6RD18AY24AJVCwith ducted air handler C(A,C,D,E)24A3J+TDRRheem1.5 tons · 19,700 Btu/h · DuctedTop 10%24,000 Btu/h
  7. 75A6V8X24A1with indoor coil DH36T4J and furnace *DHMB080CCV3+LRPTrane (sold as American Standard)1.5 tons · 20,200 Btu/h · DuctedTop 10%23,200 Btu/h
  8. 85A6V0X24A1with indoor coil DH36T4J and furnace *DHMB060CCV3+LRPTrane (sold as American Standard)1.5 tons · 20,400 Btu/h · DuctedTop 10%22,400 Btu/h
  9. 9KUMXA181ALG1.5 tons · 17,200 Btu/h · DuctedTop 10%22,000 Btu/h
  10. 10AOUH18KWAH2Fujitsu1.5 tons · 18,000 Btu/h · DuctedTop 10%22,000 Btu/h

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.

  • 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+

  • SEER2

    Summer-long cooling efficiency

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

    Good
    16.0+
    Great
    19.7+
    Top 10%
    20.5+

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