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Convectair vs DEMULLER: heat pump ratings compared

Against heat pumps of the same size and type, a typical Convectair model beats 71% and a typical DEMULLER model 28%. Convectair rates higher overall.

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

Convectair

71%

of similar heat pumps beaten by its typical model

Well above average

8 models listed

DEMULLER

28%

of similar heat pumps beaten by its typical model

Well below average

8 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°FConvectair: Beats 44%DEMULLER: Beats 21%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FConvectair: Beats 85%DEMULLER: Beats 40%
  • Winter-long heating efficiencyHSPF2Convectair: Beats 81%DEMULLER: Beats 15%
  • Summer-long cooling efficiencySEER2Convectair: Beats 68%DEMULLER: Beats 33%
  • Hot-day cooling efficiencyEER2Convectair: Beats 75%DEMULLER: Beats 29%

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

    Convectair
    100%
    DEMULLER
    50%

  • Xcel CC

    Convectair
    100%
    DEMULLER
    75%

  • CEE Advanced

    Convectair
    0%
    DEMULLER
    0%

  • ENERGY STAR CC

    Convectair
    100%
    DEMULLER
    0%

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?

Convectair

  1. 1500004494with ductless indoor unit 500004493Convectair1.5 tons · 18,000 Btu/h · DuctlessKeeps 100% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    100% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Seasonal efficiency
    10.8 (HSPF2)
    Great
    78.3score / 100
  2. 2500006217Convectair1.5 tons · 19,000 Btu/h · DuctlessKeeps 90% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    90% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Seasonal efficiency
    10.0 (HSPF2)
    Good
    67.2score / 100
  3. 3500004490with ductless indoor unit 500004479Convectair1 ton · 9,000 Btu/h · DuctlessKeeps 96% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    96% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    12.5 (HSPF2)
    Top 10%
    65.1score / 100

DEMULLER

  1. 1DMLHT1W-09R4CBPH2with ductless indoor unit DMLHT1G-09R4CBPH2DEMULLERAlso listed as DMLHT1W-09R4BBPH21 ton · 9,000 Btu/h · DuctlessKeeps 89% of its heat at 5°FMeets 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
    Seasonal efficiency
    9.0 (HSPF2)
    Below the middle
    47.6score / 100
  2. 2DMLHT1W-12R4CBPH2with ductless indoor unit DMLHT1G-12R4CBPH2DEMULLERAlso listed as DMLHT1W-12R4BBPH21 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
    1.86 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    9.0 (HSPF2)
    Below the middle
    29.6score / 100
  3. 3DMLHT1W-09R4CBPH1with ductless indoor unit DMLHT1G-09R4CBPH1DEMULLER1 ton · 9,000 Btu/h · DuctlessKeeps 78% of its heat at 5°FMeets 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
    Seasonal efficiency
    7.5 (HSPF2)
    Below the middle
    20.8score / 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.

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