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ARMSCO vs MAESTRO: heat pump ratings compared

Against heat pumps of the same size and type, a typical ARMSCO model beats 22% and a typical MAESTRO model 31%. MAESTRO rates higher overall.

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

ARMSCO

22%

of similar heat pumps beaten by its typical model

Well below average

7 models listed

MAESTRO

31%

of similar heat pumps beaten by its typical model

Well below average

7 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°FARMSCO: Beats 19%MAESTRO: Beats 16%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FARMSCO: Beats 30%MAESTRO: Beats 28%
  • Winter-long heating efficiencyHSPF2ARMSCO: Beats 19%MAESTRO: Beats 24%
  • Summer-long cooling efficiencySEER2ARMSCO: Beats 27%MAESTRO: Beats 34%
  • Hot-day cooling efficiencyEER2ARMSCO: Beats 16%MAESTRO: Beats 44%

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

    ARMSCO
    71%
    MAESTRO
    57%

  • Xcel CC

    ARMSCO
    57%
    MAESTRO
    43%

  • CEE Advanced

    ARMSCO
    0%
    MAESTRO
    0%

  • ENERGY STAR CC

    ARMSCO
    0%
    MAESTRO
    0%

All-around best, ducted 2.5–3 tons

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), the most-listed ducted size. Pick yours above. What size is my system?

ARMSCO

No ducted, 2.5–3 tons model from ARMSCO.

MAESTRO

No ducted, 2.5–3 tons model from MAESTRO.

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