1HVAC vs LPS Legacy: heat pump ratings compared
Against heat pumps of the same size and type, a typical 1HVAC model beats 61% and a typical LPS Legacy model 61%. They are level.
Covers heat pumps sold new today (R-454B and R-32 refrigerant). See older R-410A models · Updated
1HVAC
61%
of similar heat pumps beaten by its typical model
Well above average70 models listed
LPS Legacy
61%
of similar heat pumps beaten by its typical model
Well above average65 models listed
- Efficiency on a 5°F dayCOP at 5°F1HVAC: Beats 57%LPS Legacy: Beats 61%
- Heating power kept at 5°FCapacity at 5°F vs 47°F1HVAC: Beats 59%LPS Legacy: Beats 59%
- Winter-long heating efficiencyHSPF21HVAC: Beats 71%LPS Legacy: Beats 69%
- Summer-long cooling efficiencySEER21HVAC: Beats 64%LPS Legacy: Beats 63%
- Hot-day cooling efficiencyEER21HVAC: Beats 55%LPS Legacy: Beats 55%
Average (50%)Dashed outline: the other brand, for comparison
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Rebate standards
CEE 2025
- 1HVAC
- 87%
- LPS Legacy
- 83%
Xcel CC
- 1HVAC
- 74%
- LPS Legacy
- 74%
CEE Advanced
- 1HVAC
- 4%
- LPS Legacy
- 5%
ENERGY STAR CC
- 1HVAC
- 77%
- LPS Legacy
- 74%
All-around best, ducted 2.5–3 tons
Balances heating (5°F output and efficiency, HSPF2) and cooling (SEER2, EER2), each rating against units their size.
Showing Ducted, 2.5–3 tons (27,000–38,999 Btu/h cooling). What size is my system?
1HVAC
- 1ACIQ-36Z-HH-M5C1HVAC3 tons · 36,000 Btu/h · DuctedCold-climate pick, score 82.5Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
- Heat kept at 5°F
- 106% (Capacity at 5°F vs 47°F)
- Top 10%
- Efficiency at 5°F
- 2.00 (COP at 5°F)
- Good
- Winter efficiency
- 10.4 (HSPF2)
- Top 10%
- Cooling efficiency
- 19.4 (SEER2)
- Great
- Hot-day cooling
- 12.0 (EER2)
- Great
- 2ACIQ-36ZPL-HP230Cwith ducted air handler ACIQ-36CD-HH-MC1HVAC3 tons · 36,000 Btu/h · DuctedCold-climate pick, score 83.2Meets 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
- 2.10 (COP at 5°F)
- Great
- Winter efficiency
- 11.1 (HSPF2)
- Top 10%
- Cooling efficiency
- 17.7 (SEER2)
- Good
- Hot-day cooling
- 12.0 (EER2)
- Great
- 3ACIQ-27Z-HH-M4C1HVAC2.5 tons · 28,000 Btu/h · DuctedCold-climate pick, score 72.7Meets 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
- 9.5 (HSPF2)
- Great
- Cooling efficiency
- 19.0 (SEER2)
- Great
- Hot-day cooling
- 12.0 (EER2)
- Great
LPS Legacy
- 1D5CMHAH30EAKLPS Legacy2.5 tons · 30,000 Btu/h · DuctedCold-climate pick, score 78.5Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
- Heat kept at 5°F
- 116% (Capacity at 5°F vs 47°F)
- Top 10%
- Efficiency at 5°F
- 1.95 (COP at 5°F)
- Below the middle
- Winter efficiency
- 10.5 (HSPF2)
- Top 10%
- Cooling efficiency
- 19.5 (SEER2)
- Top 10%
- Hot-day cooling
- 12.5 (EER2)
- Top 10%
- 2D5CMHAH36EAKLPS Legacy3 tons · 36,000 Btu/h · DuctedCold-climate pick, score 83.2Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
- Heat kept at 5°F
- 106% (Capacity at 5°F vs 47°F)
- Top 10%
- Efficiency at 5°F
- 2.00 (COP at 5°F)
- Good
- Winter efficiency
- 10.5 (HSPF2)
- Top 10%
- Cooling efficiency
- 19.5 (SEER2)
- Top 10%
- Hot-day cooling
- 12.0 (EER2)
- Great
- 3D5CMRAH30EAKLPS Legacy2.5 tons · 30,000 Btu/h · DuctedCold-climate pick, score 68.0Meets 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
- 2.00 (COP at 5°F)
- Good
- Winter efficiency
- 9.5 (HSPF2)
- Great
- Cooling efficiency
- 21.0 (SEER2)
- Top 10%
- Hot-day cooling
- 12.0 (EER2)
- Great
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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