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Air Tempo vs Rethink Rental: heat pump ratings compared

Against heat pumps of the same size and type, a typical Air Tempo model beats 64% and a typical Rethink Rental model 35%. Air Tempo rates higher overall.

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

Air Tempo

64%

of similar heat pumps beaten by its typical model

Well above average

6 models listed

Rethink Rental

35%

of similar heat pumps beaten by its typical model

Well below average

6 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°FAir Tempo: Beats 18%Rethink Rental: Beats 51%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FAir Tempo: Beats 86%Rethink Rental: Beats 21%
  • Winter-long heating efficiencyHSPF2Air Tempo: Beats 72%Rethink Rental: Beats 30%
  • Summer-long cooling efficiencySEER2Air Tempo: Beats 78%Rethink Rental: Beats 40%
  • Hot-day cooling efficiencyEER2Air Tempo: Beats 60%Rethink Rental: Beats 33%

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

    Air Tempo
    100%
    Rethink Rental
    67%

  • Xcel CC

    Air Tempo
    100%
    Rethink Rental
    33%

  • CEE Advanced

    Air Tempo
    0%
    Rethink Rental
    0%

  • ENERGY STAR CC

    Air Tempo
    100%
    Rethink Rental
    0%

All-around best, ductless 2 tons

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

Showing Ductless, 2 tons (21,000–26,999 Btu/h cooling). What size is my system?

Air Tempo

  1. 1ATCB24K454B-Owith ductless indoor unit ATCB24K454B-IAir TempoAlso listed as ATCB24K454B-O2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 58.0Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    93% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    22.5 (SEER2)
    Good
    Hot-day cooling
    11.7 (EER2)
    Below the middle
    56.1score / 100Heating 58 · Cooling 54

Rethink Rental

  1. 1SAC24K-2TODwith ductless indoor unit SAC24K-2TIDRethink Rental2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 45.1Meets Xcel CC
    Heat kept at 5°F
    71% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.11 (COP at 5°F)
    Great
    Winter efficiency
    9.0 (HSPF2)
    Below the middle
    Cooling efficiency
    18.5 (SEER2)
    Below the middle
    Hot-day cooling
    9.6 (EER2)
    Below the middle
    29.2score / 100Heating 45 · Cooling 13

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