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B Air vs CASI0: heat pump ratings compared

One of these brands has too few models with every rating for an overall score; see each rating below.

Covers heat pumps sold new today (R-454B and R-32 refrigerant). See older R-410A models · Updated

B Air

12%

of similar heat pumps beaten by its typical model

Well below average

5 models listed

CASI0

—

of similar heat pumps beaten by its typical model

Not enough rated models

5 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°FB Air: Beats 18%CASI0: Not rated
  • Heating power kept at 5°FCapacity at 5°F vs 47°FB Air: Beats 8%CASI0: Not rated
  • Winter-long heating efficiencyHSPF2B Air: Beats 25%CASI0: Beats 2%
  • Summer-long cooling efficiencySEER2B Air: Beats 6%CASI0: Beats 6%
  • Hot-day cooling efficiencyEER2B Air: Beats 9%CASI0: Beats 11%

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

    B Air
    0%
    CASI0
    0%

  • Xcel CC

    B Air
    0%
    CASI0
    0%

  • CEE Advanced

    B Air
    0%
    CASI0
    0%

  • ENERGY STAR CC

    B Air
    0%
    CASI0
    0%

All-around best, ducted up to 1.5 tons

Balances heating (5°F output and efficiency, HSPF2) and cooling (SEER2, EER2), each rating against units their size.

Showing Ducted, Up to 1.5 tons (under 21,000 Btu/h cooling). What size is my system?

B Air

No ducted, up to 1.5 tons model from B Air.

CASI0

No ducted, up to 1.5 tons model from CASI0.

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