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ACD vs BROCK: heat pump ratings compared

Against heat pumps of the same size and type, a typical ACD model beats 51% and a typical BROCK model 42%. ACD rates higher overall.

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

ACD

51%

of similar heat pumps beaten by its typical model

About average

25 models listed

BROCK

42%

of similar heat pumps beaten by its typical model

Below average

24 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°FACD: Beats 36%BROCK: Beats 62%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FACD: Beats 69%BROCK: Beats 14%
  • Winter-long heating efficiencyHSPF2ACD: Beats 47%BROCK: Beats 26%
  • Summer-long cooling efficiencySEER2ACD: Beats 53%BROCK: Beats 32%
  • Hot-day cooling efficiencyEER2ACD: Beats 51%BROCK: Beats 68%

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

    ACD
    88%
    BROCK
    17%

  • Xcel CC

    ACD
    88%
    BROCK
    0%

  • CEE Advanced

    ACD
    0%
    BROCK
    0%

  • ENERGY STAR CC

    ACD
    72%
    BROCK
    0%

Top cold-climate picks, ductless 3.5–4.5 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, 3.5–4.5 tons (39,000–56,999 Btu/h cooling). What size is my system?

ACD

  1. 1MUD42KCH23S-OACD3.5 tons · 42,000 Btu/h · DuctlessKeeps 74% of its heat at 5°FMeets Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    74% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.82 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    8.6 (HSPF2)
    Below the middle
    31.6score / 100

BROCK

No ductless, 3.5–4.5 tons model from BROCK.

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