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 average23 models listed
ZEPHYR
63%
of similar heat pumps beaten by its typical model
Well above average23 models listed
- 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
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Rebate standards
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, ductless 2 tons
Balances heating (5°F output and efficiency, HSPF2) and cooling (SEER2, EER2), each rating against units their size.
Showing Ductless, 2 tons (21,000–26,999 Btu/h cooling). What size is my system?
Armbridge
- 1AB-GTMH24-230VOArmbridge2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 84.4Meets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
- Heat kept at 5°F
- 108% (Capacity at 5°F vs 47°F)
- Top 10%
- Efficiency at 5°F
- 2.10 (COP at 5°F)
- Good
- Winter efficiency
- 10.5 (HSPF2)
- Great
- Cooling efficiency
- 24.0 (SEER2)
- Top 10%
- Hot-day cooling
- 13.0 (EER2)
- Great
- 2AB-GTMR24-230VOArmbridge2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 67.5Meets 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
- 2.00 (COP at 5°F)
- Good
- Winter efficiency
- 10.0 (HSPF2)
- Good
- Cooling efficiency
- 23.0 (SEER2)
- Great
- Hot-day cooling
- 12.5 (EER2)
- Good
- 3AB-TS24LS-230VOwith ductless indoor unit AB-TS24CT-230VIArmbridge2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 37.4Meets CEE 2025, CEE 2026, Xcel CC
- Heat kept at 5°F
- 71% (Capacity at 5°F vs 47°F)
- Below the middle
- Efficiency at 5°F
- 1.90 (COP at 5°F)
- Below the middle
- Winter efficiency
- 9.5 (HSPF2)
- Below the middle
- Cooling efficiency
- 18.0 (SEER2)
- Below the middle
- Hot-day cooling
- 11.0 (EER2)
- Below the middle
ZEPHYR
- 1ZE-24CB25Owith ductless indoor unit ZE-24CB25AIZEPHYR2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 54.1Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
- Heat kept at 5°F
- 80% (Capacity at 5°F vs 47°F)
- Good
- Efficiency at 5°F
- 2.00 (COP at 5°F)
- Good
- Winter efficiency
- 9.5 (HSPF2)
- Below the middle
- Cooling efficiency
- 22.5 (SEER2)
- Good
- Hot-day cooling
- 12.3 (EER2)
- Good
- 2ZE-24CB22Owith ductless indoor unit ZE-24CB22AIZEPHYR2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 38.8Meets CEE 2025, CEE 2026, Xcel CC
- Heat kept at 5°F
- 76% (Capacity at 5°F vs 47°F)
- Good
- Efficiency at 5°F
- 1.98 (COP at 5°F)
- Below the middle
- Winter efficiency
- 9.0 (HSPF2)
- Below the middle
- Cooling efficiency
- 19.5 (SEER2)
- Below the middle
- Hot-day cooling
- 10.6 (EER2)
- Below the middle
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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