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COOL PRO vs YISO: heat pump ratings compared

One of these brands has too few models with every rating for an overall score; see each rating below.

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

COOL PRO

—

of similar heat pumps beaten by its typical model

Not enough rated models

7 models listed

YISO

66%

of similar heat pumps beaten by its typical model

Well above average

7 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°FCOOL PRO: Not ratedYISO: Beats 50%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FCOOL PRO: Not ratedYISO: Beats 52%
  • Winter-long heating efficiencyHSPF2COOL PRO: Beats 26%YISO: Beats 75%
  • Summer-long cooling efficiencySEER2COOL PRO: Beats 23%YISO: Beats 80%
  • Hot-day cooling efficiencyEER2COOL PRO: Beats 61%YISO: Beats 64%

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

    COOL PRO
    0%
    YISO
    100%

  • Xcel CC

    COOL PRO
    0%
    YISO
    100%

  • CEE Advanced

    COOL PRO
    0%
    YISO
    0%

  • ENERGY STAR CC

    COOL PRO
    0%
    YISO
    100%

Top cold-climate picks, ducted 3.5–4.5 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 Ducted, 3.5–4.5 tons (39,000–56,999 Btu/h cooling). What size is my system?

COOL PRO

None of COOL PRO’s ducted, 3.5–4.5 tons models qualifies.

YISO

  1. 1YRHA1-60ABYISO4.5 tons · 56,000 Btu/h · DuctedKeeps 71% of its heat at 5°FMeets CEE 2025, CEE 2026, 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
    1.90 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    9.5 (HSPF2)
    Great
    56.7score / 100
  2. 2YRHA1-60BBYISO4.5 tons · 56,000 Btu/h · DuctedKeeps 71% of its heat at 5°FMeets CEE 2025, CEE 2026, 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
    1.90 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    9.3 (HSPF2)
    Great
    55.4score / 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.

Open the advanced view