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DiamondAir vs NOVAIR: heat pump ratings compared

One of these brands has too few models with every rating for an overall score; see each rating below.

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

DiamondAir

—

of similar heat pumps beaten by its typical model

Not enough rated models

7 models listed

NOVAIR

76%

of similar heat pumps beaten by its typical model

Well above average

42 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°FDiamondAir: Not ratedNOVAIR: Beats 59%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FDiamondAir: Not ratedNOVAIR: Beats 75%
  • Winter-long heating efficiencyHSPF2DiamondAir: Beats 26%NOVAIR: Beats 80%
  • Summer-long cooling efficiencySEER2DiamondAir: Beats 21%NOVAIR: Beats 83%
  • Hot-day cooling efficiencyEER2DiamondAir: Beats 60%NOVAIR: Beats 81%

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

    DiamondAir
    0%
    NOVAIR
    98%

  • Xcel CC

    DiamondAir
    0%
    NOVAIR
    100%

  • CEE Advanced

    DiamondAir
    0%
    NOVAIR
    5%

  • ENERGY STAR CC

    DiamondAir
    0%
    NOVAIR
    100%

All-around best, ducted up to 1.5 tons

Balances heating (5°F output and efficiency, HSPF2) and cooling (SEER2, EER2), each rating against units their size.

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

DiamondAir

None of DiamondAir’s ducted, up to 1.5 tons models has all five ratings.

NOVAIR

  1. 1LEA06SZ36-Owith ducted air handler LEA06DUCT-INOVAIR0.5 tons · 6,500 Btu/h · DuctedCold-climate pick, score 93.5Meets 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%
    Winter efficiency
    13.8 (HSPF2)
    Top 10%
    Cooling efficiency
    21.4 (SEER2)
    Top 10%
    Hot-day cooling
    14.4 (EER2)
    Top 10%
    95.0score / 100Heating 94 · Cooling 97
  2. 2LEA09SZ36-Owith ducted air handler LEA09DUCT-INOVAIR1 ton · 9,000 Btu/h · DuctedCold-climate pick, score 80.0Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    112% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.89 (COP at 5°F)
    Below the middle
    Winter efficiency
    12.5 (HSPF2)
    Top 10%
    Cooling efficiency
    21.4 (SEER2)
    Top 10%
    Hot-day cooling
    13.4 (EER2)
    Top 10%
    86.7score / 100Heating 80 · Cooling 94
  3. 3LEA18CEN36-Owith ducted air handler LEA18HH-CEN-INOVAIR1.5 tons · 18,000 Btu/h · DuctedCold-climate pick, score 85.5Meets 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
    Winter efficiency
    10.1 (HSPF2)
    Great
    Cooling efficiency
    19.0 (SEER2)
    Good
    Hot-day cooling
    12.5 (EER2)
    Great
    79.3score / 100Heating 86 · Cooling 73

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