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AUX vs York: heat pump ratings compared

Against heat pumps of the same size and type, a typical AUX model beats 49% and a typical York model 54%. York rates slightly higher overall.

Covers heat pumps sold new today (R-454B and R-32 refrigerant). See older R-410A models · Updated

AUX

49%

of similar heat pumps beaten by its typical model

About average

189 models listed

York

54%

of similar heat pumps beaten by its typical model

About average

238 models listed

Rating by ratingEach bar is the share of same-size, same-type heat pumps that a typical model beats, so the two brands compare fairly even if they make different sizes.
  • Efficiency on a 5°F dayCOP at 5°FAUX: Beats 60%York: Beats 67%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FAUX: Beats 51%York: Beats 53%
  • Winter-long heating efficiencyHSPF2AUX: Beats 40%York: Beats 45%
  • Summer-long cooling efficiencySEER2AUX: Beats 48%York: Beats 40%
  • Hot-day cooling efficiencyEER2AUX: Beats 39%York: Beats 58%

Average (50%)Dashed outline: the other brand, for comparison

Want ranks, distributions per size class and cold-weather curves? Switch to Advanced

Rebate standards

Share of each brand’s models that meet the level. Programs can have other rules too.

  • CEE 2025

    AUX
    68%
    York
    54%

  • Xcel CC

    AUX
    66%
    York
    41%

  • CEE Advanced

    AUX
    1%
    York
    8%

  • ENERGY STAR CC

    AUX
    35%
    York
    35%

All-around best, ductless 2.5–3 tons

Balances heating (5°F output and efficiency, HSPF2) and cooling (SEER2, EER2), each rating against units their size.

Showing Ductless, 2.5–3 tons (27,000–38,999 Btu/h cooling). What size is my system?

AUX

  1. 1AM4-H36/2DR3BAUXAlso listed as ASUM36HPMULO3 tons · 36,000 Btu/h · DuctlessCold-climate pick, score 73.4Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    92% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    11.0 (HSPF2)
    Top 10%
    Cooling efficiency
    24.0 (SEER2)
    Top 10%
    Hot-day cooling
    12.5 (EER2)
    Great
    78.5score / 100Heating 73 · Cooling 84
  2. 2AM4-H30/2DR3AAUXAlso listed as ASPR30HPMULO2.5 tons · 30,000 Btu/h · DuctlessCold-climate pick, score 58.1Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    82% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    23.0 (SEER2)
    Great
    Hot-day cooling
    12.5 (EER2)
    Great
    67.2score / 100Heating 58 · Cooling 76
  3. 3AM4-H36/2DR3AAUXAlso listed as ASPR36HPMULO3 tons · 36,000 Btu/h · DuctlessCold-climate pick, score 52.0Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    71% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    23.0 (SEER2)
    Great
    Hot-day cooling
    12.3 (EER2)
    Good
    63.2score / 100Heating 52 · Cooling 75

York

  1. 1YPAS30BUFASDQ1with ductless indoor unit YPCIB30UFA1DQYork2.5 tons · 30,000 Btu/h · DuctlessCold-climate pick, score 96.9Meets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    102% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.30 (COP at 5°F)
    Top 10%
    Winter efficiency
    12.0 (HSPF2)
    Top 10%
    Cooling efficiency
    21.0 (SEER2)
    Good
    Hot-day cooling
    14.0 (EER2)
    Top 10%
    85.2score / 100Heating 97 · Cooling 73
  2. 2YPAS36BLFASDQ1with ductless indoor unit YPCIB36UFA1DQYork3 tons · 36,000 Btu/h · DuctlessCold-climate pick, score 94.9Meets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    104% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Great
    Winter efficiency
    11.8 (HSPF2)
    Top 10%
    Cooling efficiency
    20.5 (SEER2)
    Below the middle
    Hot-day cooling
    14.4 (EER2)
    Top 10%
    83.5score / 100Heating 95 · Cooling 72
  3. 3YPAS30BLFASDQ1with ductless indoor unit YPCIB30UFA1DQYork2.5 tons · 30,000 Btu/h · DuctlessCold-climate pick, score 97.3Meets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    103% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.40 (COP at 5°F)
    Top 10%
    Winter efficiency
    12.0 (HSPF2)
    Top 10%
    Cooling efficiency
    20.3 (SEER2)
    Below the middle
    Hot-day cooling
    13.9 (EER2)
    Top 10%
    83.3score / 100Heating 97 · Cooling 69

These are certified test ratings, not a recommendation for your home. The right size comes from a load calculation by a contractor.

Next steps

The advanced view adds ranks, both brands’ models inside every size class, standout models per rating and cold-weather curves.

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