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Multi MFG vs SLIMAIR: heat pump ratings compared

Against heat pumps of the same size and type, a typical Multi MFG model beats 61% and a typical SLIMAIR model 60%. Multi MFG rates slightly higher overall.

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

Multi MFG

61%

of similar heat pumps beaten by its typical model

Well above average

51 models listed

SLIMAIR

60%

of similar heat pumps beaten by its typical model

Well above average

48 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°FMulti MFG: Beats 62%SLIMAIR: Beats 60%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FMulti MFG: Beats 62%SLIMAIR: Beats 59%
  • Winter-long heating efficiencyHSPF2Multi MFG: Beats 75%SLIMAIR: Beats 73%
  • Summer-long cooling efficiencySEER2Multi MFG: Beats 60%SLIMAIR: Beats 61%
  • Hot-day cooling efficiencyEER2Multi MFG: Beats 51%SLIMAIR: Beats 53%

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

    Multi MFG
    88%
    SLIMAIR
    90%

  • Xcel CC

    Multi MFG
    80%
    SLIMAIR
    77%

  • CEE Advanced

    Multi MFG
    4%
    SLIMAIR
    2%

  • ENERGY STAR CC

    Multi MFG
    69%
    SLIMAIR
    79%

All-around best, ductless 2.5–3 tons

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

Showing Ductless, 2.5–3 tons (27,000–38,999 Btu/h cooling). What size is my system?

Multi MFG

  1. 136MPC5-HH-BMulti MFG3 tons · 36,000 Btu/h · DuctlessCold-climate pick, score 72.6Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    103% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.90 (COP at 5°F)
    Below the middle
    Winter efficiency
    11.3 (HSPF2)
    Top 10%
    Cooling efficiency
    21.5 (SEER2)
    Good
    Hot-day cooling
    12.2 (EER2)
    Good
    66.3score / 100Heating 70 · Cooling 62
  2. 2MSH-36HD-Bwith ductless indoor unit 36FCHP0-C-M-BMulti MFG3 tons · 36,400 Btu/h · DuctlessCold-climate pick, score 89.4Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    104% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.02 (COP at 5°F)
    Great
    Winter efficiency
    10.8 (HSPF2)
    Top 10%
    Cooling efficiency
    20.0 (SEER2)
    Below the middle
    Hot-day cooling
    12.0 (EER2)
    Good
    66.1score / 100Heating 89 · Cooling 43
  3. 336MPC5-HE-BMulti MFG3 tons · 35,000 Btu/h · DuctlessCold-climate pick, score 47.2Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    70% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    23.1 (SEER2)
    Great
    Hot-day cooling
    12.0 (EER2)
    Good
    58.3score / 100Heating 47 · Cooling 69

SLIMAIR

  1. 1SHC5Z36AH2AGSLIMAIR3 tons · 36,000 Btu/h · DuctlessCold-climate pick, score 72.6Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    103% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.90 (COP at 5°F)
    Below the middle
    Winter efficiency
    11.3 (HSPF2)
    Top 10%
    Cooling efficiency
    21.5 (SEER2)
    Good
    Hot-day cooling
    12.2 (EER2)
    Good
    66.3score / 100Heating 70 · Cooling 62
  2. 2SHC36AH2AGwith ductless indoor unit SHS36AC2AGSLIMAIR3 tons · 36,400 Btu/h · DuctlessCold-climate pick, score 89.4Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    104% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.02 (COP at 5°F)
    Great
    Winter efficiency
    10.8 (HSPF2)
    Top 10%
    Cooling efficiency
    20.0 (SEER2)
    Below the middle
    Hot-day cooling
    12.0 (EER2)
    Good
    66.1score / 100Heating 89 · Cooling 43
  3. 3SHC5Z36AC2AGSLIMAIR3 tons · 35,000 Btu/h · DuctlessCold-climate pick, score 47.2Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    70% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    23.1 (SEER2)
    Great
    Hot-day cooling
    12.0 (EER2)
    Good
    58.3score / 100Heating 47 · Cooling 69

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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