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Lennox vs Rheem: heat pump ratings compared

Against heat pumps of the same size and type, a typical Lennox model beats 56% and a typical Rheem model 54%. Lennox rates slightly higher overall.

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

Lennox

56%

of similar heat pumps beaten by its typical model

Above average

313 models listed

Rheem

54%

of similar heat pumps beaten by its typical model

About average

291 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°FLennox: Beats 58%Rheem: Beats 69%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FLennox: Beats 48%Rheem: Beats 59%
  • Winter-long heating efficiencyHSPF2Lennox: Beats 49%Rheem: Beats 49%
  • Summer-long cooling efficiencySEER2Lennox: Beats 49%Rheem: Beats 44%
  • Hot-day cooling efficiencyEER2Lennox: Beats 54%Rheem: 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

    Lennox
    46%
    Rheem
    40%

  • Xcel CC

    Lennox
    29%
    Rheem
    35%

  • CEE Advanced

    Lennox
    1%
    Rheem
    6%

  • ENERGY STAR CC

    Lennox
    20%
    Rheem
    16%

Top cold-climate picks, ducted 2.5–3 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, 2.5–3 tons (27,000–38,999 Btu/h cooling). What size is my system?

Lennox

  1. 1MLB036S4S-1Pwith ducted air handler MMDB036S4-2PLennoxAlso listed as MLB036S4S-2P3 tons · 36,000 Btu/h · DuctedKeeps 90% of its heat at 5°FMeets ENERGY STAR CC
    Heat kept at 5°F
    90% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.98 (COP at 5°F)
    Good
    Seasonal efficiency
    11.0 (HSPF2)
    Top 10%
    83.4score / 100
  2. 2A-VMH36QV-1ALennox (sold as Comfort-Aire)3 tons · 36,000 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
    1.90 (COP at 5°F)
    Good
    Seasonal efficiency
    10.0 (HSPF2)
    Top 10%
    79.9score / 100
  3. 3A-VCD36SA-1with ducted air handler MCD30/36C1ALennox (sold as Comfort-Aire)3 tons · 35,000 Btu/h · DuctedKeeps 82% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    82% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Seasonal efficiency
    10.0 (HSPF2)
    Top 10%
    78.6score / 100

Rheem

  1. 1RO1HHZ30AJ8Swith ducted air handler RIMHHZ30AJ8SRheem2.5 tons · 30,000 Btu/h · DuctedKeeps 93% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    93% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.04 (COP at 5°F)
    Good
    Seasonal efficiency
    10.0 (HSPF2)
    Top 10%
    86.6score / 100
  2. 2RO1HHZ36AJ8Swith ducted air handler RIMHHZ36AJ8SRheem3 tons · 36,000 Btu/h · DuctedKeeps 86% of its heat at 5°FMeets none of the standards tracked here
    Heat kept at 5°F
    86% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.08 (COP at 5°F)
    Great
    Seasonal efficiency
    9.8 (HSPF2)
    Great
    82.5score / 100
  3. 3UP18AZ36AJVCwith indoor coil RCFZ6021SEAAM and furnace R802V0754A17DZRheem (sold as RUUD)3 tons · 34,200 Btu/h · DuctedKeeps 127% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    127% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.20 (COP at 5°F)
    Great
    Seasonal efficiency
    8.5 (HSPF2)
    Good
    80.7score / 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