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Ranked by efficiency on a 5°f day only

How much heat the unit makes from each unit of electricity when it is 5°F outside. An electric baseboard heater has a COP of 1, so a COP of 2 means twice the heat from the same electricity in the 5°F test. 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, 2 tons (21,000–26,999 Btu/h cooling). What size is my system?

Top 10 by efficiency on a 5°f day only: ducted, 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. 1UPC24CN23STG1with ducted air handler JHE24B5AC2SS1York (sold as Guardian)2 tons · 24,000 Btu/h · DuctedTop 10%3.55
  2. 2KUSXA301Awith ducted air handler C(A,C,D,E)30C3D+TDRLG2 tons · 21,400 Btu/h · DuctedTop 10%3.43
  3. 337MURAQ24AA3with indoor coil D(A,C,E)37A3J+TDR and furnace 59SP6B120V24**22Carrier2 tons · 23,400 Btu/h · DuctedTop 10%3.16
  4. 4NS18H24HA5***with ducted air handler C(A,C,D,E)24A3J+TDRGE Appliances2 tons · 22,400 Btu/h · DuctedTop 10%3.13
  5. 537MUHAQ24AA3with indoor coil D(A,C,E)37A3J+TDR and furnace 59SP6B120V24**22Carrier2 tons · 22,000 Btu/h · DuctedTop 10%3.06
  6. 6KUSXB301Awith ducted air handler D(A,C,E)31D3D+TDRLG2 tons · 26,000 Btu/h · DuctedTop 10%3.00
  7. 7248TAN024**AA*with indoor coil C(A,C,D,E)30C3J+TDR and furnace 83*SB48060M17Carrier (sold as Bryant Heating and Cooling Systems)2 tons · 23,000 Btu/h · DuctedTop 10%2.90
  8. 8D5CUHAH24AAKwith ducted air handler D(A,C,E)36A3J+TDRCarrier (sold as Tempstar)Also listed as D5CURAH24AAK2 tons · 23,800 Btu/h · DuctedTop 10%2.88
  9. 95A6H7024A1with ducted air handler CM24D3J+TDRTrane (sold as American Standard)2 tons · 21,000 Btu/h · DuctedTop 10%2.87
  10. 105TWR7024A1with ducted air handler CM36B4J+TDRTrane2 tons · 21,600 Btu/h · DuctedTop 10%2.85

Every ducted, 2 tons model, highest first

Top cold-climate picks, ducted 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: ducted, 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
    75%+
    Great
    86%+
    Top 10%
    96%+

  • 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
    2.18+
    Top 10%
    2.43+

  • HSPF2

    Winter-long heating efficiency

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

    Good
    8.8+
    Great
    9.5+
    Top 10%
    10.2+

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