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CIAC vs OLMO: heat pump ratings compared

Against heat pumps of the same size and type, a typical CIAC model beats 38% and a typical OLMO model 43%. OLMO rates higher overall.

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

CIAC

38%

of similar heat pumps beaten by its typical model

Well below average

3 models listed

OLMO

43%

of similar heat pumps beaten by its typical model

Below average

11 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°FCIAC: Beats 83%OLMO: Beats 45%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FCIAC: Beats 16%OLMO: Beats 40%
  • Winter-long heating efficiencyHSPF2CIAC: Beats 11%OLMO: Beats 33%
  • Summer-long cooling efficiencySEER2CIAC: Beats 22%OLMO: Beats 45%
  • Hot-day cooling efficiencyEER2CIAC: Beats 14%OLMO: Beats 50%

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

    CIAC
    33%
    OLMO
    91%

  • Xcel CC

    CIAC
    0%
    OLMO
    55%

  • CEE Advanced

    CIAC
    0%
    OLMO
    0%

  • ENERGY STAR CC

    CIAC
    0%
    OLMO
    36%

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?

CIAC

No ductless, 2 tons model from CIAC.

OLMO

  1. 1OS-SR24-230VOwith ductless indoor unit OS-A24SRW-230VIOLMO2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 38.8Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    76% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.98 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.0 (HSPF2)
    Below the middle
    Cooling efficiency
    19.5 (SEER2)
    Below the middle
    Hot-day cooling
    10.6 (EER2)
    Below the middle
    34.1score / 100Heating 39 · Cooling 29

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