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EG4 vs OLMO: heat pump ratings compared

Against heat pumps of the same size and type, a typical EG4 model beats 66% and a typical OLMO model 43%. EG4 rates higher overall.

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

EG4

66%

of similar heat pumps beaten by its typical model

Well above average

11 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°FEG4: Beats 76%OLMO: Beats 45%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FEG4: Beats 75%OLMO: Beats 40%
  • Winter-long heating efficiencyHSPF2EG4: Beats 72%OLMO: Beats 33%
  • Summer-long cooling efficiencySEER2EG4: Beats 58%OLMO: Beats 45%
  • Hot-day cooling efficiencyEER2EG4: Beats 65%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

    EG4
    73%
    OLMO
    91%

  • Xcel CC

    EG4
    73%
    OLMO
    55%

  • CEE Advanced

    EG4
    0%
    OLMO
    0%

  • ENERGY STAR CC

    EG4
    73%
    OLMO
    36%

All-around best, ducted 2.5–3 tons

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

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

EG4

No ducted, 2.5–3 tons model from EG4.

OLMO

No ducted, 2.5–3 tons model from OLMO.

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