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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 average

70 models listed

LPS Legacy

61%

of similar heat pumps beaten by its typical model

Well above average

65 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°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

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

    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%

Top cold-climate picks, ducted up to 1.5 tons

Only units that keep at least 70% of their heat at 5°F, ranked on heat kept, efficiency at 5°F and seasonal efficiency (HSPF2), against units their size.

Showing Ducted, Up to 1.5 tons (under 21,000 Btu/h cooling). What size is my system?

1HVAC

  1. 1ACIQ-18-HPDwith ducted air handler ACIQ-18W-WMB1HVAC1.5 tons · 18,000 Btu/h · DuctedKeeps 103% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    103% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Good
    Seasonal efficiency
    10.8 (HSPF2)
    Top 10%
    86.7score / 100
  2. 2ACIQ-18ZPL-HP230Cwith ducted air handler ACIQ-18CD-HH-MC1HVAC1.5 tons · 17,500 Btu/h · DuctedKeeps 92% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR 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
    Seasonal efficiency
    11.1 (HSPF2)
    Top 10%
    82.3score / 100
  3. 3ACIQ-09ZPL-HP230Cwith ducted air handler ACIQ-09CD-HH-MC1HVAC1 ton · 9,000 Btu/h · DuctedKeeps 120% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    120% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.85 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    13.8 (HSPF2)
    Top 10%
    79.9score / 100

LPS Legacy

  1. 1D5CSHAH06AAKwith ducted air handler D5FSDAH06XAKLPS Legacy0.5 tons · 6,500 Btu/h · DuctedKeeps 98% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    98% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.41 (COP at 5°F)
    Top 10%
    Seasonal efficiency
    13.8 (HSPF2)
    Top 10%
    93.5score / 100
  2. 2D5CUHAH18AAKwith ducted air handler D5FUHAH24XAKLPS Legacy1.5 tons · 18,000 Btu/h · DuctedKeeps 103% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    103% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.12 (COP at 5°F)
    Great
    Seasonal efficiency
    10.2 (HSPF2)
    Great
    85.8score / 100
  3. 3D5CSHAH18AAKwith ducted air handler D5FSDAH18XHKLPS Legacy1.5 tons · 17,500 Btu/h · DuctedKeeps 92% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR 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
    Seasonal efficiency
    11.1 (HSPF2)
    Top 10%
    82.3score / 100

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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