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Carrier vs COSTWAY: heat pump ratings compared

Against heat pumps of the same size and type, a typical Carrier model beats 48% and a typical COSTWAY model 46%. Carrier rates slightly higher overall.

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

Carrier

48%

of similar heat pumps beaten by its typical model

About average

816 models listed

COSTWAY

46%

of similar heat pumps beaten by its typical model

About average

47 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°FCarrier: Beats 56%COSTWAY: Beats 57%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FCarrier: Beats 34%COSTWAY: Beats 35%
  • Winter-long heating efficiencyHSPF2Carrier: Beats 40%COSTWAY: Beats 45%
  • Summer-long cooling efficiencySEER2Carrier: Beats 42%COSTWAY: Beats 49%
  • Hot-day cooling efficiencyEER2Carrier: Beats 59%COSTWAY: Beats 36%

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

    Carrier
    40%
    COSTWAY
    64%

  • Xcel CC

    Carrier
    27%
    COSTWAY
    43%

  • CEE Advanced

    Carrier
    1%
    COSTWAY
    0%

  • ENERGY STAR CC

    Carrier
    27%
    COSTWAY
    30%

All-around best, ductless up to 1.5 tons

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

Showing Ductless, Up to 1.5 tons (under 21,000 Btu/h cooling). What size is my system?

Carrier

  1. 137MAHAQ06AA3with ductless indoor unit 45MAHAQ06XA3CarrierAlso sold as Arcoaire D5CSHAH06AAK0.5 tons · 6,000 Btu/h · DuctlessCold-climate pick, score 96.7Meets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    110% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.40 (COP at 5°F)
    Top 10%
    Winter efficiency
    14.8 (HSPF2)
    Top 10%
    Cooling efficiency
    25.7 (SEER2)
    Top 10%
    Hot-day cooling
    18.0 (EER2)
    Top 10%
    96.5score / 100Heating 97 · Cooling 96
  2. 237MPRAQ06AA3with ductless indoor unit 45MPHAQ06XA3Carrier0.5 tons · 6,000 Btu/h · DuctlessCold-climate pick, score 87.6Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    150% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    15.6 (HSPF2)
    Top 10%
    Cooling efficiency
    35.1 (SEER2)
    Top 10%
    Hot-day cooling
    17.5 (EER2)
    Top 10%
    93.5score / 100Heating 88 · Cooling 99
  3. 3D5CPRAH06AAKwith ductless indoor unit D5FPHAH06XAKCarrier (sold as Arcoaire)0.5 tons · 6,000 Btu/h · DuctlessCold-climate pick, score 87.6Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    150% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    15.6 (HSPF2)
    Top 10%
    Cooling efficiency
    33.1 (SEER2)
    Top 10%
    Hot-day cooling
    16.5 (EER2)
    Top 10%
    92.9score / 100Heating 88 · Cooling 98

COSTWAY

  1. 1FP10897US-12WHwith ductless indoor unit FP10897US-22WHCOSTWAY1.5 tons · 18,000 Btu/h · DuctlessCold-climate pick, score 79.2Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    82% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.25 (COP at 5°F)
    Great
    Winter efficiency
    10.5 (HSPF2)
    Great
    Cooling efficiency
    25.0 (SEER2)
    Great
    Hot-day cooling
    14.0 (EER2)
    Great
    82.9score / 100Heating 79 · Cooling 87
  2. 2FP11152US-12WH*with ductless indoor unit FP11152US-22WHCOSTWAY1 ton · 12,000 Btu/h · DuctlessCold-climate pick, score 59.5Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    72% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Great
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    24.0 (SEER2)
    Great
    Hot-day cooling
    13.0 (EER2)
    Good
    67.7score / 100Heating 60 · Cooling 76
  3. 3FP11150US-12WH*with ductless indoor unit FP11150US-22WHCOSTWAY1 ton · 12,000 Btu/h · DuctlessCold-climate pick, score 58.9Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    72% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Great
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    23.0 (SEER2)
    Good
    Hot-day cooling
    13.0 (EER2)
    Good
    65.0score / 100Heating 59 · Cooling 71

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