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ACIQ vs York: heat pump ratings compared

Against heat pumps of the same size and type, a typical ACIQ model beats 50% 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

ACIQ

50%

of similar heat pumps beaten by its typical model

About average

175 models listed

York

54%

of similar heat pumps beaten by its typical model

About average

229 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°FACIQ: Beats 55%York: Beats 67%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FACIQ: Beats 43%York: Beats 51%
  • Winter-long heating efficiencyHSPF2ACIQ: Beats 52%York: Beats 44%
  • Summer-long cooling efficiencySEER2ACIQ: Beats 49%York: Beats 40%
  • Hot-day cooling efficiencyEER2ACIQ: Beats 52%York: Beats 57%

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

    ACIQ
    55%
    York
    53%

  • Xcel CC

    ACIQ
    46%
    York
    39%

  • CEE Advanced

    ACIQ
    2%
    York
    8%

  • ENERGY STAR CC

    ACIQ
    34%
    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?

ACIQ

  1. 1ACIQ-36Z-HH-M5CACIQ3 tons · 36,000 Btu/h · DuctlessCold-climate pick, score 78.0Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    100% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.7 (HSPF2)
    Great
    Cooling efficiency
    23.0 (SEER2)
    Great
    Hot-day cooling
    13.0 (EER2)
    Great
    78.3score / 100Heating 76 · Cooling 81
  2. 2ACIQ-27Z-HH-M4CACIQ2.5 tons · 27,000 Btu/h · DuctlessCold-climate pick, score 72.9Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    100% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.5 (HSPF2)
    Great
    Cooling efficiency
    23.0 (SEER2)
    Great
    Hot-day cooling
    12.5 (EER2)
    Great
    74.4score / 100Heating 73 · Cooling 76
  3. 3AC-30Z-E-M4ACIQ2.5 tons · 30,000 Btu/h · DuctlessCold-climate pick, score 57.4Meets CEE 2025, CEE 2026, Xcel 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
    66.6score / 100Heating 57 · Cooling 76

York

  1. 1YPAS30BUFASDQ1with ductless indoor unit YPCIB30UFA1DQYork2.5 tons · 30,000 Btu/h · DuctlessCold-climate pick, score 97.1Meets 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)
    Below the middle
    Hot-day cooling
    14.0 (EER2)
    Top 10%
    85.0score / 100Heating 97 · Cooling 73
  2. 2YPAS36BLFASDQ1with ductless indoor unit YPCIB36UFA1DQYork3 tons · 36,000 Btu/h · DuctlessCold-climate pick, score 95.1Meets 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%
    83.3score / 100Heating 95 · Cooling 71
  3. 3YPAS30BLFASDQ1with ductless indoor unit YPCIB30UFA1DQYork2.5 tons · 30,000 Btu/h · DuctlessCold-climate pick, score 97.5Meets 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%
    83.0score / 100Heating 98 · 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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