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Achazel vs COSTWAY: heat pump ratings compared

Against heat pumps of the same size and type, a typical Achazel model beats 20% and a typical COSTWAY model 48%. COSTWAY rates higher overall.

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

Achazel

20%

of similar heat pumps beaten by its typical model

Well below average

3 models listed

COSTWAY

48%

of similar heat pumps beaten by its typical model

About 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°FAchazel: Beats 17%COSTWAY: Beats 21%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FAchazel: Beats 34%COSTWAY: Beats 33%
  • Winter-long heating efficiencyHSPF2Achazel: Beats 16%COSTWAY: Beats 46%
  • Summer-long cooling efficiencySEER2Achazel: Beats 23%COSTWAY: Beats 76%
  • Hot-day cooling efficiencyEER2Achazel: Beats 13%COSTWAY: Beats 50%

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

    Achazel
    67%
    COSTWAY
    100%

  • Xcel CC

    Achazel
    67%
    COSTWAY
    33%

  • CEE Advanced

    Achazel
    0%
    COSTWAY
    0%

  • ENERGY STAR CC

    Achazel
    0%
    COSTWAY
    33%

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?

Achazel

No ducted, up to 1.5 tons model from Achazel.

COSTWAY

No ducted, up to 1.5 tons model from COSTWAY.

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