Skip to content
Rebate.Blue

Air Tempo vs LITHZEN: 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

Air Tempo

64%

of similar heat pumps beaten by its typical model

Well above average

6 models listed

LITHZEN

—

of similar heat pumps beaten by its typical model

Not enough rated models

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%LITHZEN: Not rated
  • Heating power kept at 5°FCapacity at 5°F vs 47°FAir Tempo: Beats 86%LITHZEN: Not rated
  • Winter-long heating efficiencyHSPF2Air Tempo: Beats 72%LITHZEN: Beats 3%
  • Summer-long cooling efficiencySEER2Air Tempo: Beats 78%LITHZEN: Beats 10%
  • Hot-day cooling efficiencyEER2Air Tempo: Beats 60%LITHZEN: Beats 13%

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%
    LITHZEN
    0%

  • Xcel CC

    Air Tempo
    100%
    LITHZEN
    0%

  • CEE Advanced

    Air Tempo
    0%
    LITHZEN
    0%

  • ENERGY STAR CC

    Air Tempo
    100%
    LITHZEN
    0%

All-around best, ducted 2.5–3 tons

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

Showing Ducted, 2.5–3 tons (27,000–38,999 Btu/h cooling). What size is my system?

Air Tempo

No ducted, 2.5–3 tons model from Air Tempo.

LITHZEN

No ducted, 2.5–3 tons model from LITHZEN.

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