RUSSELL vs ZERO: heat pump ratings compared
Against heat pumps of the same size and type, a typical RUSSELL model beats 33% 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
RUSSELL
33%
of similar heat pumps beaten by its typical model
Well below average111 models listed
ZERO
53%
of similar heat pumps beaten by its typical model
About average119 models listed
- Efficiency on a 5°F dayCOP at 5°FRUSSELL: Beats 37%ZERO: Beats 45%
- Heating power kept at 5°FCapacity at 5°F vs 47°FRUSSELL: Beats 21%ZERO: Beats 52%
- Winter-long heating efficiencyHSPF2RUSSELL: Beats 24%ZERO: Beats 57%
- Summer-long cooling efficiencySEER2RUSSELL: Beats 28%ZERO: Beats 58%
- Hot-day cooling efficiencyEER2RUSSELL: Beats 36%ZERO: Beats 48%
Average (50%)Dashed outline: the other brand, for comparison
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Rebate standards
CEE 2025
- RUSSELL
- 11%
- ZERO
- 71%
Xcel CC
- RUSSELL
- 7%
- ZERO
- 65%
CEE Advanced
- RUSSELL
- 0%
- ZERO
- 0%
ENERGY STAR CC
- RUSSELL
- 12%
- ZERO
- 53%
All-around best, ducted 3.5–4.5 tons
Balances heating (5°F output and efficiency, HSPF2) and cooling (SEER2, EER2), each rating against units their size.
Showing Ducted, 3.5–4.5 tons (39,000–56,999 Btu/h cooling). What size is my system?
RUSSELL
- 1SP19AY48AJVCwith indoor coil TCFY4821SEAAM and furnace S802V0754A17UHRUSSELL4 tons · 45,500 Btu/h · DuctedCold-climate pick, score 80.9Meets CEE 2025, CEE 2026, Xcel CC
- Heat kept at 5°F
- 92% (Capacity at 5°F vs 47°F)
- Great
- Efficiency at 5°F
- 2.10 (COP at 5°F)
- Good
- Winter efficiency
- 10.0 (HSPF2)
- Great
- Cooling efficiency
- 19.0 (SEER2)
- Great
- Hot-day cooling
- 12.0 (EER2)
- Great
- 2RD18AY48AJVCwith ducted air handler SH2VY4824STACNRUSSELL3.5 tons · 41,500 Btu/h · DuctedCold-climate pick, score 80.1Meets 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)
- Good
- Winter efficiency
- 10.0 (HSPF2)
- Great
- Cooling efficiency
- 19.0 (SEER2)
- Great
- Hot-day cooling
- 12.0 (EER2)
- Great
- 3RD18AY60AJVCwith ducted air handler SH2VY6024STACNRUSSELL4.5 tons · 52,000 Btu/h · DuctedCold-climate pick, score 68.6Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
- Heat kept at 5°F
- 75% (Capacity at 5°F vs 47°F)
- Good
- Efficiency at 5°F
- 2.00 (COP at 5°F)
- Good
- Winter efficiency
- 10.0 (HSPF2)
- Great
- Cooling efficiency
- 18.0 (SEER2)
- Great
- Hot-day cooling
- 11.7 (EER2)
- Good
ZERO
- 1Z4SOV-48HDMB-USZEROAlso listed as Z6SOV-48HDMB-US4 tons · 45,000 Btu/h · DuctedCold-climate pick, score 77.9Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
- Heat kept at 5°F
- 81% (Capacity at 5°F vs 47°F)
- Good
- Efficiency at 5°F
- 2.10 (COP at 5°F)
- Good
- Winter efficiency
- 10.6 (HSPF2)
- Top 10%
- Cooling efficiency
- 20.4 (SEER2)
- Top 10%
- Hot-day cooling
- 12.0 (EER2)
- Great
- 2Z4SOV-48HDMB-USHHZERO4 tons · 47,000 Btu/h · DuctedCold-climate pick, score 82.7Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
- Heat kept at 5°F
- 100% (Capacity at 5°F vs 47°F)
- Top 10%
- Efficiency at 5°F
- 2.00 (COP at 5°F)
- Good
- Winter efficiency
- 11.0 (HSPF2)
- Top 10%
- Cooling efficiency
- 20.4 (SEER2)
- Top 10%
- Hot-day cooling
- 11.7 (EER2)
- Good
- 3Z4SOV-53HDMB-USHHZERO4.5 tons · 53,000 Btu/h · DuctedCold-climate pick, score 81.2Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
- Heat kept at 5°F
- 87% (Capacity at 5°F vs 47°F)
- Great
- Efficiency at 5°F
- 2.10 (COP at 5°F)
- Good
- Winter efficiency
- 10.7 (HSPF2)
- Top 10%
- Cooling efficiency
- 20.0 (SEER2)
- Top 10%
- Hot-day cooling
- 11.7 (EER2)
- Good
These are certified test ratings, not a recommendation for your home. The right size comes from a load calculation by a contractor.
Next steps
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