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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%

Top cold-climate picks, ductless up to 1.5 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, Up to 1.5 tons (under 21,000 Btu/h cooling). What size is my system?

DIYCOOL

  1. 1EZ-18ZPL-HP230Bwith ductless indoor unit EZ-18W-MBDIYCOOL1.5 tons · 18,000 Btu/h · DuctlessKeeps 71% of its heat at 5°FMeets 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
    2.44 (COP at 5°F)
    Top 10%
    Seasonal efficiency
    11.5 (HSPF2)
    Top 10%
    73.1score / 100
  2. 2EZ-18Z-M2BDIYCOOL1.5 tons · 18,000 Btu/h · DuctlessKeeps 74% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    74% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.31 (COP at 5°F)
    Top 10%
    Seasonal efficiency
    10.0 (HSPF2)
    Good
    66.8score / 100
  3. 3EZ-12ZPL-HP115Bwith ductless indoor unit EZ-12WPL-HP115BDIYCOOL1 ton · 12,000 Btu/h · DuctlessKeeps 70% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    70% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.09 (COP at 5°F)
    Good
    Seasonal efficiency
    10.2 (HSPF2)
    Great
    57.5score / 100

Nortek Global HVAC

  1. 1WHS18SZB21Swith ductless indoor unit WHS18WMB21SNortek Global HVAC (sold as Westinghouse)1.5 tons · 18,000 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)
    Below the middle
    Efficiency at 5°F
    2.53 (COP at 5°F)
    Top 10%
    Seasonal efficiency
    9.8 (HSPF2)
    Good
    66.8score / 100
  2. 2DXH09PSK3IHwith ductless indoor unit DHH09PUK3IHNortek Global HVAC (sold as Gibson)1 ton · 9,100 Btu/h · DuctlessKeeps 90% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    90% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.88 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.4 (HSPF2)
    Great
    62.2score / 100
  3. 3DXH18FMK3IHNortek Global HVAC (sold as Gibson)1.5 tons · 18,000 Btu/h · DuctlessKeeps 77% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    77% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Seasonal efficiency
    10.0 (HSPF2)
    Good
    61.4score / 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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