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DIAMONDAIR heat pumps: how do their ratings compare?

A typical DIAMONDAIR heat pump beats 42% of similar heat pumps (same size and type), which is below average. DIAMONDAIR has 25 heat pump models in this list.

Covers older R-410A heat pumps, no longer installed new. See models sold today · Updated

Overall score

42%

of similar heat pumps beaten by its typical model

Below average

DIAMONDAIR has no QMID (the manufacturer ID the 25C tax credit needs) on file, so it is not ranked against other brands. Based on 22 models with every rating.

DIAMONDAIR, rating by ratingStrongest on hot-day cooling efficiency (beats 53%), weakest on efficiency on a 5°f day (beats 30%).
  • Efficiency on a 5°F dayCOP at 5°FBeats 30%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FBeats 34%
  • Winter-long heating efficiencyHSPF2Beats 42%
  • Summer-long cooling efficiencySEER2Beats 38%
  • Hot-day cooling efficiencyEER2Beats 53%

Average (50%)

Each bar: the share of similar heat pumps a typical model beats on that rating.

Want DIAMONDAIR’s ranks and its models inside every size class? Switch to Advanced

Rebate standards

Share of this brand’s models that meet the efficiency levels rebate programs use. Programs can have other rules too.

  • 36%

    meet CEE 2025 Tier 1, the level many utility rebates use.

    9 models. All brands: 48%.

    See them

  • 24%

    meet Xcel Energy Colorado’s cold-climate rebate levels.

    6 models. All brands: 38%.

    See them

  • 0%

    reach the cold-climate tier: full heating output and a COP of 2.1 or more at 5°F.

    None of its models yet. All brands: 1%.

DIAMONDAIR all-around best, by size

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), the most-listed ducted size. Pick yours above. What size is my system?

4 of DIAMONDAIR’s 6 models of this size and type have all five ratings.

  1. 1DF30M2Z3DIAMONDAIR2.5 tons · 28,000 Btu/h · DuctedCold-climate pick, score 57.4Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    71% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.83 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.2 (HSPF2)
    Good
    Cooling efficiency
    21.0 (SEER2)
    Top 10%
    Hot-day cooling
    11.7 (EER2)
    Good
    71.5score / 100Heating 57 · Cooling 86
  2. 2DF36M2Z4DIAMONDAIR3 tons · 36,000 Btu/h · DuctedNot a cold-climate pick: keeps 64% of its heat at 5°FMeets none of the standards tracked here
    Heat kept at 5°F
    65% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.68 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.2 (HSPF2)
    Good
    Cooling efficiency
    20.0 (SEER2)
    Top 10%
    Hot-day cooling
    11.0 (EER2)
    Below the middle
    56.6score / 100Heating 44 · Cooling 69
  3. 3D1436HPL2DIAMONDAIR3 tons · 34,200 Btu/h · DuctedNot a cold-climate pick: keeps 33% of its heat at 5°FMeets none of the standards tracked here
    Heat kept at 5°F
    34% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.40 (COP at 5°F)
    Below the middle
    Winter efficiency
    6.7 (HSPF2)
    Below the middle
    Cooling efficiency
    13.4 (SEER2)
    Below the middle
    Hot-day cooling
    11.2 (EER2)
    Good
    17.3score / 100Heating 4 · Cooling 31
  4. 4D1430HPG2DIAMONDAIR2.5 tons · 28,200 Btu/h · DuctedNot a cold-climate pick: keeps 35% of its heat at 5°FMeets none of the standards tracked here
    Heat kept at 5°F
    35% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.40 (COP at 5°F)
    Below the middle
    Winter efficiency
    6.7 (HSPF2)
    Below the middle
    Cooling efficiency
    13.4 (SEER2)
    Below the middle
    Hot-day cooling
    11.0 (EER2)
    Below the middle
    15.2score / 100Heating 4 · Cooling 26

These are certified test ratings, not a recommendation for your home. The right size comes from a load calculation by a contractor.

What to do next

The advanced view has DIAMONDAIR’s ranks on each rating, its models inside every size and type, cold-weather curves and its newest certifications.

Open the advanced view