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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%

Top cold-climate picks, ducted 2.5–3 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, 2.5–3 tons (27,000–38,999 Btu/h cooling), the most-listed ducted size. Pick yours above. What size is my system?

DiamondAir

None of DiamondAir’s ducted, 2.5–3 tons models qualifies.

NOVAIR

  1. 1LEA36MZ5P36-ONOVAIR3 tons · 36,000 Btu/h · DuctedKeeps 106% of its heat at 5°FMeets 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
    Seasonal efficiency
    10.4 (HSPF2)
    Top 10%
    82.5score / 100
  2. 2LEA30CEN36-Owith ducted air handler LEA30HH-CEN-INOVAIR2.5 tons · 30,000 Btu/h · DuctedKeeps 101% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    101% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.97 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.8 (HSPF2)
    Top 10%
    77.0score / 100
  3. 3LEA36CEN36-Owith ducted air handler LEA36CEN36-INOVAIR3 tons · 36,000 Btu/h · DuctedKeeps 105% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    105% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.90 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.3 (HSPF2)
    Top 10%
    73.1score / 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.

Open the advanced view