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5 SERIES GEO-READY vs AC BEST LA: heat pump ratings compared

Against heat pumps of the same size and type, a typical 5 SERIES GEO-READY model beats 68% and a typical AC BEST LA model 58%. 5 SERIES GEO-READY rates higher overall.

Covers older R-410A heat pumps, no longer installed new. See models sold today · Updated

5 SERIES GEO-READY

68%

of similar heat pumps beaten by its typical model

Well above average

3 models listed

AC BEST LA

58%

of similar heat pumps beaten by its typical model

Above average

3 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°F5 SERIES GEO-READY: Beats 91%AC BEST LA: Beats 47%
  • Heating power kept at 5°FCapacity at 5°F vs 47°F5 SERIES GEO-READY: Beats 19%AC BEST LA: Beats 50%
  • Winter-long heating efficiencyHSPF25 SERIES GEO-READY: Beats 76%AC BEST LA: Beats 61%
  • Summer-long cooling efficiencySEER25 SERIES GEO-READY: Beats 52%AC BEST LA: Beats 66%
  • Hot-day cooling efficiencyEER25 SERIES GEO-READY: Beats 96%AC BEST LA: Beats 60%

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

    5 SERIES GEO-READY
    33%
    AC BEST LA
    100%

  • Xcel CC

    5 SERIES GEO-READY
    0%
    AC BEST LA
    67%

  • CEE Advanced

    5 SERIES GEO-READY
    0%
    AC BEST LA
    0%

  • ENERGY STAR CC

    5 SERIES GEO-READY
    0%
    AC BEST LA
    0%

Top cold-climate picks, ductless 2.5–3 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, 2.5–3 tons (27,000–38,999 Btu/h cooling). What size is my system?

5 SERIES GEO-READY

No ductless, 2.5–3 tons model from 5 SERIES GEO-READY.

AC BEST LA

  1. 1M3OJ-27HFN1-MAC BEST LA2.5 tons · 27,000 Btu/h · DuctlessKeeps 71% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    71% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.83 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    9.2 (HSPF2)
    Good
    50.1score / 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.

Open the advanced view