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ZEPHYR heat pumps: how do their ratings compare?

A typical ZEPHYR heat pump beats 63% of similar heat pumps (same size and type), which is well above average. ZEPHYR has 23 heat pump models in this list.

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

Overall score

63%

of similar heat pumps beaten by its typical model

Well above average

ZEPHYR has no QMID (the manufacturer ID the 25C tax credit needs) on file, so it is not ranked against other brands. Based on 27 models with every rating.

ZEPHYR, rating by ratingStrongest on summer-long cooling efficiency (beats 67%), weakest on efficiency on a 5°f day (beats 57%).
  • Efficiency on a 5°F dayCOP at 5°FBeats 57%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FBeats 64%
  • Winter-long heating efficiencyHSPF2Beats 59%
  • Summer-long cooling efficiencySEER2Beats 67%
  • Hot-day cooling efficiencyEER2Beats 65%

Average (50%)

Each bar: the share of similar heat pumps a typical model beats on that rating.

Want ZEPHYR’s ranks and its models inside every size class? Switch to Advanced

Rebate standards

Share of this brand’s models that meet the efficiency levels rebate programs use. Programs can have other rules too.

  • 100%

    meet CEE 2025 Tier 1, the level many utility rebates use.

    23 models. All brands: 57%.

    See them

  • 83%

    meet Xcel Energy Colorado’s cold-climate rebate levels.

    19 models. All brands: 53%.

    See them

  • 9%

    reach the cold-climate tier: full heating output and a COP of 2.1 or more at 5°F.

    2 models. All brands: 3%.

    See them

ZEPHYR all-around best, by size

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?

3 of ZEPHYR’s 3 models of this size and type have all five ratings.

  1. 1ZE-636HPAwith ducted air handler AH-636AZEPHYR2.5 tons · 32,000 Btu/h · DuctedCold-climate pick, score 87.9Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    97% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.15 (COP at 5°F)
    Great
    Winter efficiency
    10.5 (HSPF2)
    Top 10%
    Cooling efficiency
    19.5 (SEER2)
    Top 10%
    Hot-day cooling
    11.7 (EER2)
    Good
    82.3score / 100Heating 88 · Cooling 77
  2. 2ZE-536M425ZEPHYR3 tons · 36,000 Btu/h · DuctedCold-climate pick, score 54.3Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    90% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.0 (HSPF2)
    Good
    Cooling efficiency
    19.0 (SEER2)
    Great
    Hot-day cooling
    12.9 (EER2)
    Top 10%
    72.3score / 100Heating 54 · Cooling 90
  3. 3ZE-527M325ZEPHYR2.5 tons · 27,000 Btu/h · DuctedCold-climate pick, score 56.7Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    98% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Winter efficiency
    8.8 (HSPF2)
    Good
    Cooling efficiency
    18.0 (SEER2)
    Good
    Hot-day cooling
    11.5 (EER2)
    Good
    58.2score / 100Heating 57 · Cooling 60

These are certified test ratings, not a recommendation for your home. The right size comes from a load calculation by a contractor.

What to do next

The advanced view has ZEPHYR’s ranks on each rating, its models inside every size and type, cold-weather curves and its newest certifications.

Open the advanced view