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Century vs ECO-AIR: heat pump ratings compared

Against heat pumps of the same size and type, a typical Century model beats 50% and a typical ECO-AIR model 65%. ECO-AIR rates higher overall.

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

Century

50%

of similar heat pumps beaten by its typical model

About average

59 models listed

ECO-AIR

65%

of similar heat pumps beaten by its typical model

Well above average

60 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°FCentury: Beats 50%ECO-AIR: Beats 62%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FCentury: Beats 49%ECO-AIR: Beats 61%
  • Winter-long heating efficiencyHSPF2Century: Beats 52%ECO-AIR: Beats 73%
  • Summer-long cooling efficiencySEER2Century: Beats 45%ECO-AIR: Beats 69%
  • Hot-day cooling efficiencyEER2Century: Beats 53%ECO-AIR: Beats 59%

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

    Century
    44%
    ECO-AIR
    90%

  • Xcel CC

    Century
    41%
    ECO-AIR
    80%

  • CEE Advanced

    Century
    3%
    ECO-AIR
    2%

  • ENERGY STAR CC

    Century
    32%
    ECO-AIR
    82%

Top cold-climate picks, ductless up to 1.5 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 Ductless, Up to 1.5 tons (under 21,000 Btu/h cooling). What size is my system?

Century

  1. 1A-VHP06SA-1with ductless indoor unit B-VHP06SA-1Century0.5 tons · 6,000 Btu/h · DuctlessKeeps 110% of its heat at 5°FMeets 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%
    Seasonal efficiency
    14.8 (HSPF2)
    Top 10%
    96.7score / 100
  2. 2A-ZHP09SA-1with ductless indoor unit B-ZHP09SA-1Century1 ton · 9,000 Btu/h · DuctlessKeeps 113% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    113% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Seasonal efficiency
    14.6 (HSPF2)
    Top 10%
    85.9score / 100
  3. 3A-VHP12SA-1with ductless indoor unit B-VHP12CA-1Century1 ton · 12,000 Btu/h · DuctlessKeeps 96% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    96% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.99 (COP at 5°F)
    Good
    Seasonal efficiency
    11.6 (HSPF2)
    Top 10%
    76.1score / 100

ECO-AIR

  1. 1EDSO-06Hwith ductless indoor unit EDWM-06UECO-AIR0.5 tons · 6,000 Btu/h · DuctlessKeeps 110% of its heat at 5°FMeets 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%
    Seasonal efficiency
    14.8 (HSPF2)
    Top 10%
    96.7score / 100
  2. 2EDSO-09Ewith ductless indoor unit EDWM-09UECO-AIR1 ton · 9,000 Btu/h · DuctlessKeeps 80% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    80% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.37 (COP at 5°F)
    Top 10%
    Seasonal efficiency
    12.5 (HSPF2)
    Top 10%
    84.4score / 100
  3. 3EDSO-12Hwith ductless indoor unit ED4W-12UECO-AIR1 ton · 12,000 Btu/h · DuctlessKeeps 96% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    96% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.99 (COP at 5°F)
    Good
    Seasonal efficiency
    11.6 (HSPF2)
    Top 10%
    76.1score / 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.

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