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Lennox heat pumps: how do their ratings compare?

A typical Lennox heat pump beats 56% of similar heat pumps (same size and type), which is above average. Lennox has 313 heat pump models in this list, also sold as Allied Commercial, AirEase, Allied, Armstrong Air, Comfort-Aire and 2 more names.

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

Overall score

56%

of similar heat pumps beaten by its typical model

Above average

Ranked 13 among brands with a QMID on file. Based on 281 models with every rating.

Lennox, rating by ratingStrongest on efficiency on a 5°f day (beats 58%), weakest on heating power kept at 5°f (beats 48%).
  • Efficiency on a 5°F dayCOP at 5°FBeats 58%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FBeats 48%
  • Winter-long heating efficiencyHSPF2Beats 49%
  • Summer-long cooling efficiencySEER2Beats 49%
  • Hot-day cooling efficiencyEER2Beats 54%

Average (50%)

Each bar: the share of similar heat pumps a typical model beats on that rating.

Want Lennox’s ranks and its models inside every size class? Switch to Advanced

Rebate standards

Share of this brand’s models that meet the efficiency levels rebate programs use. Programs can have other rules too.

  • 46%

    meet CEE 2025 Tier 1, the level many utility rebates use.

    144 models. All brands: 48%.

    See them

  • 29%

    meet Xcel Energy Colorado’s cold-climate rebate levels.

    92 models. All brands: 38%.

    See them

  • 1%

    reach the cold-climate tier: full heating output and a COP of 2.1 or more at 5°F.

    3 models. All brands: 1%.

    See them

Top Lennox cold-climate picks, by size

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 Ductless, 3.5–4.5 tons (39,000–56,999 Btu/h cooling). What size is my system?

8 of Lennox’s 16 models of this size and type qualify.

  1. 1MLB048S4S-2Pwith ductless indoor unit M33C048S4-*PLennox4 tons · 48,000 Btu/h · DuctlessKeeps 94% of its heat at 5°FMeets ENERGY STAR CC
    Heat kept at 5°F
    94% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.98 (COP at 5°F)
    Good
    Seasonal efficiency
    10.7 (HSPF2)
    Top 10%
    81.3score / 100
  2. 2MLB048S4M-2PLennoxAlso sold as Comfort-Aire A-VMH48PV-1, Allied 4DHP2S48M-1P4 tons · 48,000 Btu/h · DuctlessKeeps 92% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    92% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Seasonal efficiency
    9.8 (HSPF2)
    Good
    76.2score / 100
  3. 3LISH048000P431-Dwith ductless indoor unit LIUH048180P431-CLennox4 tons · 48,000 Btu/h · DuctlessKeeps 70% of its heat at 5°FMeets 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
    1.85 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.0 (HSPF2)
    Great
    56.3score / 100
  4. 4MPC048S4S-1Pwith ductless indoor unit MCFA048S4-2PLennox4 tons · 48,000 Btu/h · DuctlessKeeps 70% of its heat at 5°FMeets 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
    1.85 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    9.7 (HSPF2)
    Good
    49.1score / 100
  5. 5A-VMH55PV-1Lennox (sold as Comfort-Aire)4.5 tons · 55,000 Btu/h · DuctlessKeeps 85% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    85% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.77 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    9.5 (HSPF2)
    Below the middle
    38.9score / 100

These are certified test ratings, not a recommendation for your home. The right size comes from a load calculation by a contractor.

What to do next

The advanced view has Lennox’s ranks on each rating, its models inside every size and type, cold-weather curves and its newest certifications.

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