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Nortek Global HVAC vs ZERO: heat pump ratings compared

Against heat pumps of the same size and type, a typical Nortek Global HVAC model beats 31% and a typical ZERO model 53%. ZERO rates higher overall.

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

Nortek Global HVAC

31%

of similar heat pumps beaten by its typical model

Well below average

109 models listed

ZERO

53%

of similar heat pumps beaten by its typical model

About average

119 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°FNortek Global HVAC: Beats 23%ZERO: Beats 45%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FNortek Global HVAC: Beats 28%ZERO: Beats 52%
  • Winter-long heating efficiencyHSPF2Nortek Global HVAC: Beats 28%ZERO: Beats 57%
  • Summer-long cooling efficiencySEER2Nortek Global HVAC: Beats 32%ZERO: Beats 58%
  • Hot-day cooling efficiencyEER2Nortek Global HVAC: Beats 42%ZERO: Beats 48%

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

    Nortek Global HVAC
    28%
    ZERO
    71%

  • Xcel CC

    Nortek Global HVAC
    20%
    ZERO
    65%

  • CEE Advanced

    Nortek Global HVAC
    2%
    ZERO
    0%

  • ENERGY STAR CC

    Nortek Global HVAC
    11%
    ZERO
    53%

All-around best, ducted 2 tons

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

Showing Ducted, 2 tons (21,000–26,999 Btu/h cooling). What size is my system?

Nortek Global HVAC

  1. 1UXH24-36MSK3IHwith ducted air handler UMD24MSK3IHNortek Global HVAC (sold as Gibson)2 tons · 24,000 Btu/h · DuctedCold-climate pick, score 76.9Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    96% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.0 (HSPF2)
    Great
    Cooling efficiency
    18.0 (SEER2)
    Good
    Hot-day cooling
    12.5 (EER2)
    Great
    72.4score / 100Heating 75 · Cooling 70
  2. 2DXH24FMK3IHNortek Global HVAC (sold as Gibson)2 tons · 24,000 Btu/h · DuctedCold-climate pick, score 49.0Meets 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
    1.86 (COP at 5°F)
    Below the middle
    Winter efficiency
    8.1 (HSPF2)
    Below the middle
    Cooling efficiency
    18.0 (SEER2)
    Good
    Hot-day cooling
    12.0 (EER2)
    Good
    54.7score / 100Heating 49 · Cooling 60
  3. 3SH4BF5M2SX24Kwith ducted air handler B65VMMX24K-BNortek Global HVAC (sold as Nortek Global Hvac Llc)Also sold as Frigidaire FSH4BF5M2SX24K, Maytag PSH4BF5M2SX24K2 tons · 24,000 Btu/h · DuctedNot a cold-climate pick: keeps 48% of its heat at 5°FMeets CEE 2025
    Heat kept at 5°F
    48% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.75 (COP at 5°F)
    Below the middle
    Winter efficiency
    8.0 (HSPF2)
    Below the middle
    Cooling efficiency
    16.0 (SEER2)
    Below the middle
    Hot-day cooling
    11.7 (EER2)
    Below the middle
    31.3score / 100Heating 20 · Cooling 43

ZERO

  1. 1ZOV-24HDGBwith ducted air handler ZAV-24HDGBZERO2 tons · 24,000 Btu/h · DuctedCold-climate pick, score 67.2Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    83% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Good
    Winter efficiency
    9.4 (HSPF2)
    Good
    Cooling efficiency
    20.0 (SEER2)
    Great
    Hot-day cooling
    13.3 (EER2)
    Top 10%
    79.6score / 100Heating 67 · Cooling 92
  2. 2ZRRV07HPBYFC-18SZEROAlso listed as ZPRVO7HPBYFC-18S, ZPRV07HPBYFC-18S2 tons · 24,000 Btu/h · DuctedCold-climate pick, score 70.4Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    103% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.94 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.5 (HSPF2)
    Good
    Cooling efficiency
    19.0 (SEER2)
    Great
    Hot-day cooling
    12.2 (EER2)
    Great
    73.5score / 100Heating 70 · Cooling 77
  3. 3Z4SOV-27HDMB-USZERO2 tons · 26,600 Btu/h · DuctedCold-climate pick, score 48.6Meets 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
    9.0 (HSPF2)
    Good
    Cooling efficiency
    21.0 (SEER2)
    Top 10%
    Hot-day cooling
    12.0 (EER2)
    Good
    64.5score / 100Heating 49 · Cooling 81

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.

Open the advanced view