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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, 2 tons (21,000–26,999 Btu/h cooling). What size is my system?

Top 10 by heat output at 5°f 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. 1RP15AY30AJ2Nwith ducted air handler L(E,G)M36AJRheem2 tons · 26,400 Btu/h · DuctedTop 10%35,800 Btu/h
  2. 25TCV0X36A1with ducted air handler 5TEMCD04AV31+TDRTraneAlso sold as American Standard 5A5V0X36A12 tons · 26,200 Btu/h · DuctedTop 10%35,600 Btu/h
  3. 3WP15AY30AJ2Nwith ducted air handler PE(S,T)33JRheem (sold as Weatherking)2 tons · 25,600 Btu/h · DuctedTop 10%34,000 Btu/h
  4. 4AOUH24KUAH1with ducted air handler ARUH24KUASFujitsu2 tons · 24,000 Btu/h · DuctedTop 10%30,400 Btu/h
  5. 5GK-H02TC/NHA-D(U)GreeAlso sold as Ac Pro PKHP-X-024VBC, Tosot TK-H02TC/NHA-D(U)2 tons · 24,000 Btu/h · DuctedTop 10%30,300 Btu/h
  6. 6MDPH18024DMRCOOL2 tons · 24,000 Btu/h · DuctedTop 10%30,300 Btu/h
  7. 7RP15AY24AJ2Nwith indoor coil D(A,C,E)24A3J+TDR and furnace U97MV0603A17DHRheem (sold as RUUD)2 tons · 21,600 Btu/h · DuctedTop 10%28,400 Btu/h
  8. 8WP15AY24AJ2Nwith ducted air handler RE(S,T)24JRheem (sold as Weatherking)2 tons · 21,400 Btu/h · DuctedTop 10%28,200 Btu/h
  9. 9KUSXA241Awith ducted air handler KNUJB241ALG2 tons · 23,000 Btu/h · DuctedGreat28,000 Btu/h
  10. 10KUMXA301ALG2 tons · 24,600 Btu/h · DuctedTop 10%27,500 Btu/h

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.

  • 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+

  • SEER2

    Summer-long cooling efficiency

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

    Good
    18.0+
    Great
    19.0+
    Top 10%
    20.0+

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