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DEMULLER heat pumps: how do their ratings compare?

A typical DEMULLER heat pump beats 28% of similar heat pumps (same size and type), which is well below average. DEMULLER has 8 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

28%

of similar heat pumps beaten by its typical model

Well below average

DEMULLER has no QMID (the manufacturer ID the 25C tax credit needs) on file, so it is not ranked against other brands. Based on 8 models with every rating.

DEMULLER, rating by ratingStrongest on heating power kept at 5°f (beats 40%), weakest on winter-long heating efficiency (beats 15%).
  • Efficiency on a 5°F dayCOP at 5°FBeats 21%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FBeats 40%
  • Winter-long heating efficiencyHSPF2Beats 15%
  • Summer-long cooling efficiencySEER2Beats 33%
  • Hot-day cooling efficiencyEER2Beats 29%

Average (50%)

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

Want DEMULLER’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.

  • 50%

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

    4 models. All brands: 57%.

    See them

  • 75%

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

    6 models. All brands: 53%.

    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: 3%.

DEMULLER all-around best, by size

Balances heating (5°F output and efficiency, HSPF2) and cooling (SEER2, EER2), each rating against units their size.

Showing Ductless, Up to 1.5 tons (under 21,000 Btu/h cooling), the most-listed ducted size. Pick yours above. What size is my system?

8 of DEMULLER’s 8 models of this size and type have all five ratings.

  1. 1DMLHT1W-09R4CBPH2with ductless indoor unit DMLHT1G-09R4CBPH2DEMULLERAlso listed as DMLHT1W-09R4BBPH21 ton · 9,000 Btu/h · DuctlessCold-climate pick, score 47.6Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    89% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.90 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.0 (HSPF2)
    Below the middle
    Cooling efficiency
    22.0 (SEER2)
    Good
    Hot-day cooling
    12.0 (EER2)
    Below the middle
    49.3score / 100Heating 48 · Cooling 51
  2. 2DMLHT1W-12R4CBPH2with ductless indoor unit DMLHT1G-12R4CBPH2DEMULLERAlso listed as DMLHT1W-12R4BBPH21 ton · 12,000 Btu/h · DuctlessCold-climate pick, score 29.6Meets 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
    1.86 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.0 (HSPF2)
    Below the middle
    Cooling efficiency
    22.0 (SEER2)
    Good
    Hot-day cooling
    12.0 (EER2)
    Below the middle
    40.3score / 100Heating 30 · Cooling 51
  3. 3DMLHT1W-09R4CBPH1with ductless indoor unit DMLHT1G-09R4CBPH1DEMULLER1 ton · 9,000 Btu/h · DuctlessCold-climate pick, score 20.8Meets Xcel CC
    Heat kept at 5°F
    78% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.75 (COP at 5°F)
    Below the middle
    Winter efficiency
    7.5 (HSPF2)
    Below the middle
    Cooling efficiency
    17.0 (SEER2)
    Below the middle
    Hot-day cooling
    10.2 (EER2)
    Below the middle
    16.9score / 100Heating 21 · Cooling 13
  4. 4DMLHT1W-09R4BBPH1with ductless indoor unit DMLHT1G-09R4BBPH1DEMULLER1 ton · 9,000 Btu/h · DuctlessCold-climate pick, score 18.2Meets Xcel CC
    Heat kept at 5°F
    76% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.75 (COP at 5°F)
    Below the middle
    Winter efficiency
    7.5 (HSPF2)
    Below the middle
    Cooling efficiency
    17.0 (SEER2)
    Below the middle
    Hot-day cooling
    10.2 (EER2)
    Below the middle
    15.6score / 100Heating 18 · Cooling 13
  5. 5DMLHT1W-12R4BBPH1with ductless indoor unit DMLHT1G-12R4BBPH1DEMULLER1 ton · 12,000 Btu/h · DuctlessNot a cold-climate pick: keeps 61% of its heat at 5°FMeets none of the standards tracked here
    Heat kept at 5°F
    62% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.70 (COP at 5°F)
    Below the middle
    Winter efficiency
    7.5 (HSPF2)
    Below the middle
    Cooling efficiency
    17.0 (SEER2)
    Below the middle
    Hot-day cooling
    9.8 (EER2)
    Below the middle
    7.4score / 100Heating 4 · Cooling 11

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

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