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COSTWAY vs Pioneer: heat pump ratings compared

Against heat pumps of the same size and type, a typical COSTWAY model beats 46% and a typical Pioneer model 47%. Pioneer rates slightly higher overall.

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

COSTWAY

46%

of similar heat pumps beaten by its typical model

About average

47 models listed

Pioneer

47%

of similar heat pumps beaten by its typical model

About average

46 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°FCOSTWAY: Beats 57%Pioneer: Beats 41%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FCOSTWAY: Beats 35%Pioneer: Beats 43%
  • Winter-long heating efficiencyHSPF2COSTWAY: Beats 45%Pioneer: Beats 56%
  • Summer-long cooling efficiencySEER2COSTWAY: Beats 49%Pioneer: Beats 56%
  • Hot-day cooling efficiencyEER2COSTWAY: Beats 36%Pioneer: Beats 40%

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

    COSTWAY
    64%
    Pioneer
    74%

  • Xcel CC

    COSTWAY
    43%
    Pioneer
    70%

  • CEE Advanced

    COSTWAY
    0%
    Pioneer
    0%

  • ENERGY STAR CC

    COSTWAY
    30%
    Pioneer
    54%

All-around best, ductless 3.5–4.5 tons

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

Showing Ductless, 3.5–4.5 tons (39,000–56,999 Btu/h cooling). What size is my system?

COSTWAY

No ductless, 3.5–4.5 tons model from COSTWAY.

Pioneer

  1. 1YN050GLSI24M5GPioneer3.5 tons · 42,000 Btu/h · DuctlessCold-climate pick, score 31.2Meets 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
    2.00 (COP at 5°F)
    Below the middle
    Winter efficiency
    10.0 (HSPF2)
    Below the middle
    Cooling efficiency
    22.0 (SEER2)
    Good
    Hot-day cooling
    11.2 (EER2)
    Below the middle
    42.4score / 100Heating 31 · Cooling 54
  2. 2YN060GLSI24M6GPioneer4.5 tons · 55,000 Btu/h · DuctlessCold-climate pick, score 22.5Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    76% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.97 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.5 (HSPF2)
    Below the middle
    Cooling efficiency
    22.5 (SEER2)
    Great
    Hot-day cooling
    10.0 (EER2)
    Below the middle
    37.2score / 100Heating 23 · Cooling 52
  3. 3YN048GMSI20RUGwith ductless indoor unit CB048GMSILDFHGPioneer4 tons · 48,000 Btu/h · DuctlessCold-climate pick, score 55.4Meets Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    81% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.11 (COP at 5°F)
    Top 10%
    Winter efficiency
    9.9 (HSPF2)
    Below the middle
    Cooling efficiency
    19.0 (SEER2)
    Below the middle
    Hot-day cooling
    9.5 (EER2)
    Below the middle
    34.9score / 100Heating 55 · Cooling 14

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