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Armbridge vs ZEPHYR: heat pump ratings compared

Against heat pumps of the same size and type, a typical Armbridge model beats 55% and a typical ZEPHYR model 63%. ZEPHYR rates higher overall.

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

Armbridge

55%

of similar heat pumps beaten by its typical model

About average

23 models listed

ZEPHYR

63%

of similar heat pumps beaten by its typical model

Well above average

23 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°FArmbridge: Beats 46%ZEPHYR: Beats 57%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FArmbridge: Beats 50%ZEPHYR: Beats 64%
  • Winter-long heating efficiencyHSPF2Armbridge: Beats 62%ZEPHYR: Beats 59%
  • Summer-long cooling efficiencySEER2Armbridge: Beats 64%ZEPHYR: Beats 67%
  • Hot-day cooling efficiencyEER2Armbridge: Beats 49%ZEPHYR: Beats 65%

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

    Armbridge
    57%
    ZEPHYR
    100%

  • Xcel CC

    Armbridge
    61%
    ZEPHYR
    83%

  • CEE Advanced

    Armbridge
    4%
    ZEPHYR
    9%

  • ENERGY STAR CC

    Armbridge
    39%
    ZEPHYR
    74%

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?

Armbridge

  1. 1AB-GTMH24-230VOArmbridge2 tons · 24,000 Btu/h · DuctedCold-climate pick, score 63.0Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    83% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.90 (COP at 5°F)
    Below the middle
    Winter efficiency
    10.0 (HSPF2)
    Great
    Cooling efficiency
    21.0 (SEER2)
    Top 10%
    Hot-day cooling
    13.0 (EER2)
    Top 10%
    78.5score / 100Heating 63 · Cooling 94
  2. 2AB-GTMR24-230VOArmbridge2 tons · 24,000 Btu/h · DuctedCold-climate pick, score 59.1Meets 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
    Winter efficiency
    9.5 (HSPF2)
    Good
    Cooling efficiency
    20.5 (SEER2)
    Top 10%
    Hot-day cooling
    11.8 (EER2)
    Good
    66.1score / 100Heating 59 · Cooling 73
  3. 3AB-BSD24HI-230VOwith ducted air handler AB-BMP24AHU-230VIArmbridge2 tons · 24,000 Btu/h · DuctedCold-climate pick, score 36.6Meets none of the standards tracked here
    Heat kept at 5°F
    60% (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
    8.5 (HSPF2)
    Below the middle
    Cooling efficiency
    17.7 (SEER2)
    Below the middle
    Hot-day cooling
    10.4 (EER2)
    Below the middle
    29.0score / 100Heating 28 · Cooling 31

ZEPHYR

  1. 1ZE-624HPAwith ducted air handler AH-624AZEPHYR2 tons · 24,000 Btu/h · DuctedCold-climate pick, score 82.1Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    88% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.30 (COP at 5°F)
    Great
    Winter efficiency
    10.0 (HSPF2)
    Great
    Cooling efficiency
    20.0 (SEER2)
    Great
    Hot-day cooling
    12.0 (EER2)
    Good
    79.5score / 100Heating 82 · Cooling 77

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