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Della vs EMI: heat pump ratings compared

Against heat pumps of the same size and type, a typical Della model beats 48% and a typical EMI model 62%. EMI rates higher overall.

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

Della

48%

of similar heat pumps beaten by its typical model

About average

94 models listed

EMI

62%

of similar heat pumps beaten by its typical model

Well above average

15 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°FDella: Beats 43%EMI: Beats 56%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FDella: Beats 44%EMI: Beats 63%
  • Winter-long heating efficiencyHSPF2Della: Beats 50%EMI: Beats 69%
  • Summer-long cooling efficiencySEER2Della: Beats 55%EMI: Beats 61%
  • Hot-day cooling efficiencyEER2Della: Beats 41%EMI: Beats 60%

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

    Della
    68%
    EMI
    87%

  • Xcel CC

    Della
    66%
    EMI
    73%

  • CEE Advanced

    Della
    0%
    EMI
    7%

  • ENERGY STAR CC

    Della
    44%
    EMI
    73%

All-around best, ductless 2 tons

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

Showing Ductless, 2 tons (21,000–26,999 Btu/h cooling). What size is my system?

Della

  1. 1048-MS-24K2VR-22S-MX-OUTwith ductless indoor unit 048-MS-24K2VR-22S-MX-INDella2 tons · 23,000 Btu/h · DuctlessCold-climate pick, score 77.5Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    87% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.20 (COP at 5°F)
    Great
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    22.0 (SEER2)
    Good
    Hot-day cooling
    12.0 (EER2)
    Good
    68.1score / 100Heating 78 · Cooling 59
  2. 2048-MS-24K2VR-22S-M-OUTwith ductless indoor unit 048-MS-24K2VR-22S-M-INDella2 tons · 23,000 Btu/h · DuctlessCold-climate pick, score 77.2Meets 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
    2.20 (COP at 5°F)
    Great
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    22.0 (SEER2)
    Good
    Hot-day cooling
    12.0 (EER2)
    Good
    68.0score / 100Heating 77 · Cooling 59
  3. 3048-MS-24K2VR-21S-OUTwith ductless indoor unit 048-MS-24K2VR-21S-QC-INDella2 tons · 22,000 Btu/h · DuctlessNot a cold-climate pick: keeps 24% of its heat at 5°FMeets none of the standards tracked here
    Heat kept at 5°F
    24% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.27 (COP at 5°F)
    Great
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    21.0 (SEER2)
    Below the middle
    Hot-day cooling
    13.0 (EER2)
    Great
    58.7score / 100Heating 53 · Cooling 65

EMI

  1. 1EMXSZ124DAwith ductless indoor unit EMXWAL24DAEMI2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 88.4Meets 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
    2.34 (COP at 5°F)
    Top 10%
    Winter efficiency
    13.5 (HSPF2)
    Top 10%
    Cooling efficiency
    21.0 (SEER2)
    Below the middle
    Hot-day cooling
    13.0 (EER2)
    Great
    76.4score / 100Heating 88 · Cooling 65
  2. 2ECOSZ124DAwith ductless indoor unit ECOWAL24DAEMI2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 45.1Meets Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    71% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.11 (COP at 5°F)
    Great
    Winter efficiency
    9.0 (HSPF2)
    Below the middle
    Cooling efficiency
    18.5 (SEER2)
    Below the middle
    Hot-day cooling
    9.6 (EER2)
    Below the middle
    29.2score / 100Heating 45 · Cooling 13

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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