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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 31%. DIYCOOL rates higher overall.

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

DIYCOOL

54%

of similar heat pumps beaten by its typical model

About average

24 models listed

Nortek Global HVAC

31%

of similar heat pumps beaten by its typical model

Well below average

109 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 53%Nortek Global HVAC: Beats 23%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FDIYCOOL: Beats 51%Nortek Global HVAC: Beats 28%
  • Winter-long heating efficiencyHSPF2DIYCOOL: Beats 63%Nortek Global HVAC: Beats 28%
  • Summer-long cooling efficiencySEER2DIYCOOL: Beats 60%Nortek Global HVAC: Beats 32%
  • Hot-day cooling efficiencyEER2DIYCOOL: Beats 47%Nortek Global HVAC: Beats 42%

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
    79%
    Nortek Global HVAC
    28%

  • Xcel CC

    DIYCOOL
    71%
    Nortek Global HVAC
    20%

  • CEE Advanced

    DIYCOOL
    4%
    Nortek Global HVAC
    2%

  • ENERGY STAR CC

    DIYCOOL
    75%
    Nortek Global HVAC
    11%

All-around best, ductless 3.5–4.5 tons

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

Showing Ductless, 3.5–4.5 tons (39,000–56,999 Btu/h cooling). What size is my system?

DIYCOOL

  1. 1EZ-48Z-M5BDIYCOOL3.5 tons · 43,000 Btu/h · DuctlessCold-climate pick, score 45.0Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    77% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Below the middle
    Winter efficiency
    10.0 (HSPF2)
    Below the middle
    Cooling efficiency
    21.8 (SEER2)
    Good
    Hot-day cooling
    12.0 (EER2)
    Good
    52.8score / 100Heating 37 · Cooling 69

Nortek Global HVAC

  1. 1DXH42FMK3IHNortek Global HVAC (sold as Gibson)3.5 tons · 42,000 Btu/h · DuctlessCold-climate pick, score 66.5Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    90% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Great
    Winter efficiency
    10.0 (HSPF2)
    Below the middle
    Cooling efficiency
    21.0 (SEER2)
    Below the middle
    Hot-day cooling
    13.0 (EER2)
    Top 10%
    67.7score / 100Heating 67 · 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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