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TGM vs Viessmann: heat pump ratings compared

Against heat pumps of the same size and type, a typical TGM model beats 52% and a typical Viessmann model 53%. Viessmann rates slightly higher overall.

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

TGM

52%

of similar heat pumps beaten by its typical model

About average

54 models listed

Viessmann

53%

of similar heat pumps beaten by its typical model

About average

53 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°FTGM: Beats 43%Viessmann: Beats 52%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FTGM: Beats 47%Viessmann: Beats 50%
  • Winter-long heating efficiencyHSPF2TGM: Beats 46%Viessmann: Beats 63%
  • Summer-long cooling efficiencySEER2TGM: Beats 47%Viessmann: Beats 58%
  • Hot-day cooling efficiencyEER2TGM: Beats 47%Viessmann: Beats 46%

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

    TGM
    32%
    Viessmann
    64%

  • Xcel CC

    TGM
    24%
    Viessmann
    43%

  • CEE Advanced

    TGM
    0%
    Viessmann
    4%

  • ENERGY STAR CC

    TGM
    13%
    Viessmann
    47%

Top cold-climate picks, ductless up to 1.5 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 Ductless, Up to 1.5 tons (under 21,000 Btu/h cooling). What size is my system?

TGM

  1. 1MRAPT12ASwith ductless indoor unit MWAPT12STGM1 ton · 12,000 Btu/h · DuctlessKeeps 98% of its heat at 5°FMeets 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
    2.07 (COP at 5°F)
    Good
    Seasonal efficiency
    10.4 (HSPF2)
    Great
    77.5score / 100
  2. 2MMRSHT18AS2TGM1.5 tons · 18,000 Btu/h · DuctlessKeeps 74% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    74% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.86 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.2 (HSPF2)
    Good
    57.1score / 100
  3. 3HRHDBT12ASwith ductless indoor unit HWHDBT12STGM1 ton · 12,000 Btu/h · DuctlessKeeps 70% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    70% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.75 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    9.5 (HSPF2)
    Good
    34.7score / 100

Viessmann

  1. 1DLCPRBH18AAKwith ductless indoor unit DLFPHBH18XAKViessmann1.5 tons · 18,000 Btu/h · DuctlessKeeps 120% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    120% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.89 (COP at 5°F)
    Top 10%
    Seasonal efficiency
    11.0 (HSPF2)
    Great
    95.0score / 100
  2. 2DLCSRBH06AAKwith ductless indoor unit DLFSHCH06XAKViessmann0.5 tons · 6,000 Btu/h · DuctlessKeeps 107% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    107% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.09 (COP at 5°F)
    Great
    Seasonal efficiency
    13.6 (HSPF2)
    Top 10%
    89.3score / 100
  3. 3DLCSRBH12AAKwith ductless indoor unit DLFSFBH12XAKViessmann1 ton · 12,000 Btu/h · DuctlessKeeps 99% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    99% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.99 (COP at 5°F)
    Good
    Seasonal efficiency
    10.7 (HSPF2)
    Great
    77.0score / 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