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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, 3.5–4.5 tons (39,000–56,999 Btu/h cooling). What size is my system?

11 of Viessmann’s 11 models of this size and type have all five ratings.

  1. 1D5CMHAH48FAKViessmann4 tons · 47,000 Btu/h · DuctedCold-climate pick, score 82.7Meets 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
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    11.0 (HSPF2)
    Top 10%
    Cooling efficiency
    20.5 (SEER2)
    Top 10%
    Hot-day cooling
    11.7 (EER2)
    Good
    84.6score / 100Heating 83 · Cooling 86
  2. 2D5CMHAH55FAKViessmann4.5 tons · 53,000 Btu/h · DuctedCold-climate pick, score 81.2Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    87% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Good
    Winter efficiency
    10.7 (HSPF2)
    Top 10%
    Cooling efficiency
    20.2 (SEER2)
    Top 10%
    Hot-day cooling
    11.7 (EER2)
    Good
    82.5score / 100Heating 81 · Cooling 84
  3. 3D5CUHAH48AAKwith ducted air handler D5FUHAH60XAKViessmann4 tons · 48,000 Btu/h · DuctedCold-climate pick, score 76.7Meets 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
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    9.5 (HSPF2)
    Great
    Cooling efficiency
    17.5 (SEER2)
    Good
    Hot-day cooling
    12.0 (EER2)
    Great
    78.4score / 100Heating 77 · Cooling 80
  4. 4D5CUHAH60AAKwith ducted air handler D5FUHAH60XAKViessmann4.5 tons · 54,000 Btu/h · DuctedCold-climate pick, score 70.6Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    98% (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)
    Great
    Cooling efficiency
    17.5 (SEER2)
    Good
    Hot-day cooling
    12.0 (EER2)
    Great
    75.3score / 100Heating 71 · Cooling 80
  5. 5D5CLHAH48AAKwith ducted air handler D5FLDAH48XHKViessmann4 tons · 48,000 Btu/h · DuctedCold-climate pick, score 78.2Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    91% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.8 (HSPF2)
    Top 10%
    Cooling efficiency
    16.8 (SEER2)
    Good
    Hot-day cooling
    10.4 (EER2)
    Below the middle
    61.9score / 100Heating 78 · Cooling 46

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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