Skip to content
Rebate.Blue

AUX vs Friedrich: heat pump ratings compared

Against heat pumps of the same size and type, a typical AUX model beats 49% and a typical Friedrich model 39%. AUX rates higher overall.

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

AUX

49%

of similar heat pumps beaten by its typical model

About average

189 models listed

Friedrich

39%

of similar heat pumps beaten by its typical model

Well below average

188 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°FAUX: Beats 60%Friedrich: Beats 46%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FAUX: Beats 51%Friedrich: Beats 35%
  • Winter-long heating efficiencyHSPF2AUX: Beats 40%Friedrich: Beats 31%
  • Summer-long cooling efficiencySEER2AUX: Beats 48%Friedrich: Beats 34%
  • Hot-day cooling efficiencyEER2AUX: Beats 39%Friedrich: Beats 38%

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

    AUX
    68%
    Friedrich
    27%

  • Xcel CC

    AUX
    66%
    Friedrich
    21%

  • CEE Advanced

    AUX
    1%
    Friedrich
    1%

  • ENERGY STAR CC

    AUX
    35%
    Friedrich
    22%

Top cold-climate picks, ducted 3.5–4.5 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, 3.5–4.5 tons (39,000–56,999 Btu/h cooling). What size is my system?

AUX

  1. 1ASUM42HPMULOAUX3.5 tons · 42,000 Btu/h · DuctedKeeps 83% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    83% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Good
    Seasonal efficiency
    10.0 (HSPF2)
    Great
    77.1score / 100
  2. 2AHU48HPV1BOwith ducted air handler AHU48HPV1BIAUX4 tons · 48,000 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)
    Top 10%
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Seasonal efficiency
    9.5 (HSPF2)
    Great
    76.5score / 100
  3. 3AHU48HPV1AOwith ducted air handler AHU48HPV1AIAUX4 tons · 48,000 Btu/h · DuctedKeeps 84% of its heat at 5°FMeets none of the standards tracked here
    Heat kept at 5°F
    84% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Good
    Seasonal efficiency
    9.0 (HSPF2)
    Good
    72.5score / 100

Friedrich

  1. 1FPHFR48A3Dwith ducted air handler FPHFA48A3DFriedrich4 tons · 48,000 Btu/h · DuctedKeeps 100% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    100% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Good
    Seasonal efficiency
    10.0 (HSPF2)
    Great
    83.9score / 100
  2. 2RD18AY48AJVCwith indoor coil RCFY4821STANM and furnace FR98MV1005A21UPFriedrich3.5 tons · 40,500 Btu/h · DuctedKeeps 94% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    94% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Good
    Seasonal efficiency
    10.0 (HSPF2)
    Great
    81.6score / 100
  3. 3FRP19AY48AJVCwith ducted air handler FRHMVY4821SEACAFriedrich4 tons · 45,500 Btu/h · DuctedKeeps 92% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    92% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Good
    Seasonal efficiency
    10.0 (HSPF2)
    Great
    80.9score / 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