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MANUFLOW vs ZEPHYR: heat pump ratings compared

Against heat pumps of the same size and type, a typical MANUFLOW model beats 56% and a typical ZEPHYR model 58%. ZEPHYR rates slightly higher overall.

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

MANUFLOW

56%

of similar heat pumps beaten by its typical model

Above average

34 models listed

ZEPHYR

58%

of similar heat pumps beaten by its typical model

Above average

25 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°FMANUFLOW: Beats 34%ZEPHYR: Beats 40%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FMANUFLOW: Beats 48%ZEPHYR: Beats 68%
  • Winter-long heating efficiencyHSPF2MANUFLOW: Beats 28%ZEPHYR: Beats 43%
  • Summer-long cooling efficiencySEER2MANUFLOW: Beats 39%ZEPHYR: Beats 53%
  • Hot-day cooling efficiencyEER2MANUFLOW: Beats 50%ZEPHYR: Beats 52%

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

    MANUFLOW
    35%
    ZEPHYR
    76%

  • Xcel CC

    MANUFLOW
    29%
    ZEPHYR
    76%

  • CEE Advanced

    MANUFLOW
    0%
    ZEPHYR
    0%

  • ENERGY STAR CC

    MANUFLOW
    0%
    ZEPHYR
    36%

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

MANUFLOW

No ducted, up to 1.5 tons model from MANUFLOW.

ZEPHYR

No ducted, up to 1.5 tons model from ZEPHYR.

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