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DIYCOOL vs Nortek Global HVAC: heat pump ratings compared

Against heat pumps of the same size and type, a typical DIYCOOL model beats 54% and a typical Nortek Global HVAC model 51%. DIYCOOL rates slightly higher overall.

Covers older R-410A heat pumps, no longer installed new. See models sold today · Updated

DIYCOOL

54%

of similar heat pumps beaten by its typical model

About average

75 models listed

Nortek Global HVAC

51%

of similar heat pumps beaten by its typical model

About average

75 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°FDIYCOOL: Beats 42%Nortek Global HVAC: Beats 44%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FDIYCOOL: Beats 62%Nortek Global HVAC: Beats 64%
  • Winter-long heating efficiencyHSPF2DIYCOOL: Beats 62%Nortek Global HVAC: Beats 38%
  • Summer-long cooling efficiencySEER2DIYCOOL: Beats 59%Nortek Global HVAC: Beats 39%
  • Hot-day cooling efficiencyEER2DIYCOOL: Beats 43%Nortek Global HVAC: Beats 46%

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

    DIYCOOL
    65%
    Nortek Global HVAC
    39%

  • Xcel CC

    DIYCOOL
    55%
    Nortek Global HVAC
    41%

  • CEE Advanced

    DIYCOOL
    1%
    Nortek Global HVAC
    0%

  • ENERGY STAR CC

    DIYCOOL
    45%
    Nortek Global HVAC
    29%

Top cold-climate picks, ductless 2.5–3 tons

Only units that keep at least 70% of their heat at 5°F, ranked on heat kept, efficiency at 5°F and seasonal efficiency (HSPF2), against units their size.

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

DIYCOOL

  1. 1ACIQ-36Z-HH-M4BDIYCOOL3 tons · 36,000 Btu/h · DuctlessKeeps 97% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    97% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.90 (COP at 5°F)
    Good
    Seasonal efficiency
    10.3 (HSPF2)
    Great
    79.3score / 100
  2. 2ACIQ-36ZPL-HP230Bwith ductless indoor unit ACIQ-36CC-HH-MBDIYCOOL3 tons · 36,000 Btu/h · DuctlessKeeps 103% of its heat at 5°FMeets Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    103% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.83 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.5 (HSPF2)
    Top 10%
    75.0score / 100
  3. 3ACIQ-27Z-HH-M3BDIYCOOL2.5 tons · 28,000 Btu/h · DuctlessKeeps 89% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    89% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.6 (HSPF2)
    Top 10%
    61.4score / 100

Nortek Global HVAC

  1. 1WHU36SZA21Swith ductless indoor unit WHU36CTA21SNortek Global HVAC (sold as Westinghouse)3 tons · 36,000 Btu/h · DuctlessKeeps 74% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    74% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.28 (COP at 5°F)
    Top 10%
    Seasonal efficiency
    9.8 (HSPF2)
    Good
    77.2score / 100
  2. 2GXH42(12.3)FMK4DH-1Nortek Global HVAC (sold as Gibson)3 tons · 36,000 Btu/h · DuctlessKeeps 81% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    81% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.92 (COP at 5°F)
    Good
    Seasonal efficiency
    10.0 (HSPF2)
    Great
    73.7score / 100
  3. 3WHP36M4A21SNortek Global HVAC (sold as Westinghouse)2.5 tons · 32,000 Btu/h · DuctlessKeeps 113% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    113% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.84 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    9.0 (HSPF2)
    Below the middle
    64.0score / 100

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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