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AIR-CON vs Century: heat pump ratings compared

Against heat pumps of the same size and type, a typical AIR-CON model beats 45% and a typical Century model 50%. Century rates slightly higher overall.

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

AIR-CON

45%

of similar heat pumps beaten by its typical model

About average

41 models listed

Century

50%

of similar heat pumps beaten by its typical model

About average

59 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°FAIR-CON: Beats 57%Century: Beats 50%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FAIR-CON: Beats 33%Century: Beats 49%
  • Winter-long heating efficiencyHSPF2AIR-CON: Beats 45%Century: Beats 52%
  • Summer-long cooling efficiencySEER2AIR-CON: Beats 43%Century: Beats 45%
  • Hot-day cooling efficiencyEER2AIR-CON: Beats 39%Century: Beats 53%

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

    AIR-CON
    44%
    Century
    44%

  • Xcel CC

    AIR-CON
    34%
    Century
    41%

  • CEE Advanced

    AIR-CON
    0%
    Century
    3%

  • ENERGY STAR CC

    AIR-CON
    0%
    Century
    32%

All-around best, ductless 2 tons

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

Showing Ductless, 2 tons (21,000–26,999 Btu/h cooling). What size is my system?

AIR-CON

  1. 1ASGCI8H4M24with ductless indoor unit ASGEL8H4M24AIR-CON2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 77.9Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    76% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.27 (COP at 5°F)
    Great
    Winter efficiency
    11.1 (HSPF2)
    Top 10%
    Cooling efficiency
    21.1 (SEER2)
    Good
    Hot-day cooling
    12.2 (EER2)
    Good
    69.1score / 100Heating 78 · Cooling 60
  2. 2ADSCI7C4E24with ductless indoor unit ADSEM7C4E24AIR-CONAlso listed as ASQCI7H4E242 tons · 23,000 Btu/h · DuctlessNot a cold-climate pick: keeps 53% of its heat at 5°FMeets none of the standards tracked here
    Heat kept at 5°F
    54% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.5 (HSPF2)
    Below the middle
    Cooling efficiency
    17.0 (SEER2)
    Below the middle
    Hot-day cooling
    9.5 (EER2)
    Below the middle
    13.4score / 100Heating 21 · Cooling 5

Century

  1. 1A-VHP24SA-1with ductless indoor unit B-VHP24SA-1Century2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 89.4Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    83% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.34 (COP at 5°F)
    Top 10%
    Winter efficiency
    13.5 (HSPF2)
    Top 10%
    Cooling efficiency
    21.0 (SEER2)
    Below the middle
    Hot-day cooling
    13.0 (EER2)
    Great
    76.4score / 100Heating 88 · Cooling 65

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