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Viessmann heat pumps: how do their ratings compare?

A typical Viessmann heat pump beats 60% of similar heat pumps (same size and type), which is well above average. Viessmann has 43 heat pump models in this list.

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

Overall score

60%

of similar heat pumps beaten by its typical model

Well above average

Viessmann has no QMID (the manufacturer ID the 25C tax credit needs) on file, so it is not ranked against other brands. Based on 59 models with every rating.

Viessmann, rating by ratingStrongest on winter-long heating efficiency (beats 74%), weakest on hot-day cooling efficiency (beats 49%).
  • Efficiency on a 5°F dayCOP at 5°FBeats 53%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FBeats 72%
  • Winter-long heating efficiencyHSPF2Beats 74%
  • Summer-long cooling efficiencySEER2Beats 59%
  • Hot-day cooling efficiencyEER2Beats 49%

Average (50%)

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

Want Viessmann’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.

  • 84%

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

    36 models. All brands: 57%.

    See them

  • 79%

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

    34 models. All brands: 53%.

    See them

  • 5%

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

    2 models. All brands: 3%.

    See them

Viessmann 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 tons (21,000–26,999 Btu/h cooling). What size is my system?

7 of Viessmann’s 7 models of this size and type have all five ratings.

  1. 1D5CSHAH24AAKwith ducted air handler D5FSDAH24XHKViessmann2 tons · 24,000 Btu/h · DuctedCold-climate pick, score 85.7Meets 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
    2.18 (COP at 5°F)
    Good
    Winter efficiency
    11.7 (HSPF2)
    Top 10%
    Cooling efficiency
    19.2 (SEER2)
    Great
    Hot-day cooling
    12.0 (EER2)
    Good
    80.0score / 100Heating 86 · Cooling 74
  2. 2D5CMHAH24DAKViessmann2 tons · 24,000 Btu/h · DuctedCold-climate pick, score 68.1Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    100% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.90 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.5 (HSPF2)
    Good
    Cooling efficiency
    20.0 (SEER2)
    Great
    Hot-day cooling
    13.0 (EER2)
    Top 10%
    79.3score / 100Heating 68 · Cooling 91
  3. 3D5CUHAH24AAKwith ducted air handler D5FUHAH24XAKViessmann2 tons · 24,000 Btu/h · DuctedCold-climate pick, score 75.8Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    86% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.14 (COP at 5°F)
    Good
    Winter efficiency
    10.0 (HSPF2)
    Great
    Cooling efficiency
    18.7 (SEER2)
    Good
    Hot-day cooling
    12.0 (EER2)
    Good
    71.9score / 100Heating 76 · Cooling 68
  4. 4D5CUHAH24AAK+TIC2025-0016with ducted air handler FTMA5X24L0BViessmannAlso listed as D5CUHAH24AAK+KSAIC07012302 tons · 23,600 Btu/h · DuctedCold-climate pick, score 68.0Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    84% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.04 (COP at 5°F)
    Good
    Winter efficiency
    9.5 (HSPF2)
    Good
    Cooling efficiency
    17.5 (SEER2)
    Below the middle
    Hot-day cooling
    11.0 (EER2)
    Below the middle
    52.6score / 100Heating 68 · Cooling 37
  5. 5D5CURAH24AAKwith ducted air handler D5FUAAH24XAKViessmann2 tons · 24,000 Btu/h · DuctedCold-climate pick, score 64.1Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    83% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.87 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.7 (HSPF2)
    Great
    Cooling efficiency
    18.2 (SEER2)
    Good
    Hot-day cooling
    11.0 (EER2)
    Below the middle
    52.1score / 100Heating 60 · Cooling 45

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 Viessmann’s ranks on each rating, its models inside every size and type, cold-weather curves and its newest certifications.

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