Skip to content
Rebate.Blue

FRANKLIN vs ZERO: heat pump ratings compared

Against heat pumps of the same size and type, a typical FRANKLIN model beats 54% and a typical ZERO model 49%. FRANKLIN rates higher overall.

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

FRANKLIN

54%

of similar heat pumps beaten by its typical model

About average

74 models listed

ZERO

49%

of similar heat pumps beaten by its typical model

About average

69 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°FFRANKLIN: Beats 44%ZERO: Beats 48%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FFRANKLIN: Beats 45%ZERO: Beats 43%
  • Winter-long heating efficiencyHSPF2FRANKLIN: Beats 44%ZERO: Beats 46%
  • Summer-long cooling efficiencySEER2FRANKLIN: Beats 50%ZERO: Beats 53%
  • Hot-day cooling efficiencyEER2FRANKLIN: Beats 64%ZERO: Beats 46%

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

    FRANKLIN
    32%
    ZERO
    59%

  • Xcel CC

    FRANKLIN
    22%
    ZERO
    48%

  • CEE Advanced

    FRANKLIN
    0%
    ZERO
    0%

  • ENERGY STAR CC

    FRANKLIN
    19%
    ZERO
    25%

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?

FRANKLIN

  1. 1MSH093E23MCAAwith ducted air handler MST093E21ADAAFRANKLIN1 ton · 9,000 Btu/h · DuctedKeeps 108% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    108% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.90 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    12.0 (HSPF2)
    Top 10%
    74.9score / 100
  2. 2MSH123E23MCAAwith ducted air handler MST123E21ADAAFRANKLINAlso listed as MSH123F25MCAA1 ton · 12,000 Btu/h · DuctedKeeps 97% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    97% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.96 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.0 (HSPF2)
    Great
    65.4score / 100
  3. 3MST183E23MHAAFRANKLINAlso listed as MST183F25MHAA1.5 tons · 19,000 Btu/h · DuctedKeeps 100% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    100% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.83 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    9.3 (HSPF2)
    Below the middle
    50.4score / 100

ZERO

  1. 1Z3SOV-18HDM-USZERO1.5 tons · 18,000 Btu/h · DuctedKeeps 70% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    70% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Seasonal efficiency
    9.8 (HSPF2)
    Good
    52.0score / 100

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