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Friedrich vs Lennox heat pumps

Measured against models of the same size and duct type, Lennox scores higher on 5 of the 6 ratings. Friedrich has 117 outdoor models, Lennox has 313 outdoor models.

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CompareData as of updated · sources

Against comparable models

Each cell is the share of same-size, same-type models that the manufacturer’s typical model beats (50% is typical); the higher score is in bold. Raw medians are underneath for context: they depend on which sizes each one makes, so they are not compared.
Friedrich and Lennox on every ratingPeer scores, 0–100 · grey ticks: every ranked manufacturer · shaded: the middle half of each one’s modelsMeasured against models of the same size and duct type, Lennox scores higher on 5 of the 6 ratings.
  • Friedrich
  • Lennox
  • Other ranked manufacturers
FriedrichLennox

Source: AHRI Directory, NEEP · as of

Average peer percentile, raw median and rank among ranked manufacturers
RatingFriedrichLennox
Efficiency index46%median — · 25th ranked56%median — · 13th ranked
COP at 5°F58%median 2.10 · 9th ranked58%median 2.00 · 10th ranked
Capacity retention at 5°F45%median 61% · 20th ranked48%median 67% · 19th ranked
HSPF231%median 7.5 · 26th ranked49%median 8.5 · 17th ranked
SEER236%median 15.2 · 26th ranked49%median 17.0 · 17th ranked
EER239%median 10.6 · 26th ranked54%median 11.6 · 14th ranked
Heating capacity at 5°F39%median 15,600 Btu/h · 25th ranked48%median 18,560 Btu/h · 18th ranked
Outdoor models117313
AHRI certifications3,08375,630

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
StandardFriedrichLennox
CEE 2025 Tier 1 (Split ASHP)37.6%44 models46%144 models
CEE 2026 Tier 1 (Split ASHP)37.6%44 models45%141 models
CEE Advanced Tier (Split ASHP)1.7%2 models1%3 models
Xcel Energy Colorado cold-climate ASHP (2025)31.6%37 models29.4%92 models
DOE Cold Climate Heat Pump Challenge1.7%2 models1%3 models
ENERGY STAR Cold Climate28.2%33 models19.8%62 models

Sizes and duct types offered

Models in each peer group, with the efficiency index of those models against the rest of the group.
Side by side, inside each size and duct typeShape: every model of the group · bars: each manufacturer’s middle half, median dot, 10th–90th line · 9 groups where both have models
  • Friedrich
  • Lennox
  • All models of the group
Ducted, up to 1.5 tons2.00884 modelsDucted, 2 tons2.00821 modelsDucted, 2.5–3 tons1.901,614 modelsDucted, 3.5–4.5 tons1.911,492 modelsDucted, 5 tons and up1.90239 modelsNon-ducted, up to 1.5 tons1.902,417 modelsNon-ducted, 2 tons1.87611 modelsNon-ducted, 2.5–3 tons1.85975 modelsNon-ducted, 3.5–4.5 tons1.97438 modelsNon-ducted, 5 tons and up2.1032 modelsmedian

Raw ratings are only placed side by side within one size and duct type, where they are comparable.

Source: AHRI Directory · as of

Models per peer group · efficiency index within the group
Size and duct typeFriedrichLennox
Ducted, up to 1.5 tons21 · index 27%31 · index 60%
Ducted, 2 tons16 · index 45%35 · index 58%
Ducted, 2.5–3 tons22 · index 52%72 · index 55%
Ducted, 3.5–4.5 tons28 · index 47%86 · index 57%
Ducted, 5 tons and up7 · index —13 · index 45%
Non-ducted, up to 1.5 tons19 · index 55%66 · index 54%
Non-ducted, 2 tons6 · index 47%22 · index 57%
Non-ducted, 2.5–3 tons6 · index 61%37 · index 55%
Non-ducted, 3.5–4.5 tons1 · index 45%16 · index 57%
Non-ducted, 5 tons and upNone1 · index 36%

Cold-climate and all-around picks, size class by size class

Each manufacturer’s best model on each board in every size and duct type, side by side; the higher score is in bold. Both scores are 0–100 against every model of that size class (the line on each bar is 50, the typical model there), so the two compare fairly even when they make different sizes.

Cold-climate picks

Best cold-climate pick per size and duct type (keeps at least 70% of its heat at 5°F). Qualifies when its capacity retention at 5°F (capacity at 5°F as a share of capacity at 47°F) is at least 70% and Capacity retention at 5°F, COP at 5°F, HSPF2 are all rated. Score = the equal-weight mean of its peer percentiles on Capacity retention at 5°F, COP at 5°F, HSPF2 (share of the other models in its peer group it beats, 0–100), all from one certified pairing: in each duct type a model is sold in, its qualifying pairing of that type with the best score; equal scores (one decimal) go to the higher heating capacity at 5°F.
Size and duct typeFriedrichCold-climate score, best modelLennoxCold-climate score, best model
Ducted, up to 1.5 tons55.9(50 is the typical model of its size class)FPHFR09A3Awith ducted air handler FPHFD09A3A4 of 20 models qualify · AHRI 20504819877.6(50 is the typical model of its size class) (higher)MPC009S4S-1Pwith ducted air handler MMDB009S4-*PAlso sold as AirEase 4DHPS209S-1P21 of 31 models qualify · AHRI 211034423
Ducted, 2 tons74.7(50 is the typical model of its size class)FRP18AZ24AJVCwith indoor coil TCFZ2421HEAAM and furnace FR801V0504A17UHU5 of 17 models qualify · AHRI 21382971081.1(50 is the typical model of its size class) (higher)MPC024S4S-1Pwith ducted air handler MMDB024S4-*PAlso sold as AirEase 4DHP2S24S-1P17 of 34 models qualify · AHRI 211034426
Ducted, 2.5–3 tons80.6(50 is the typical model of its size class)FRP18AZ36AJVCwith indoor coil TCFZ3621MEAAM and furnace FR801V0504A17UHU5 of 22 models qualify · AHRI 21382972283.4(50 is the typical model of its size class) (higher)MLB036S4S-1Pwith ducted air handler MMDB036S4-2PAlso listed as MLB036S4S-2P23 of 74 models qualify · AHRI 205782160
Ducted, 3.5–4.5 tons76.3(50 is the typical model of its size class)FRP18AZ48AJVCwith indoor coil TCFZ6021SEAAM and furnace FR962V1005A21M47 of 28 models qualify · AHRI 21427902888.9(50 is the typical model of its size class) (higher)MLB048S4S-1Pwith ducted air handler MMDB048S4-2P18 of 85 models qualify · AHRI 205782161
Ducted, 5 tons and upNone on this board (0 of 7 models qualify)None on this board (0 of 13 models qualify)
Non-ducted, up to 1.5 tons78.4(50 is the typical model of its size class)FPHFR09A3Awith ductless indoor unit FPHFC09A3B18 of 19 models qualify · AHRI 20504819790.2(50 is the typical model of its size class) (higher)MPC009S4S-1Pwith ductless indoor unit MWMC006S4-2P34 of 66 models qualify · AHRI 213199199
Non-ducted, 2 tons72.0(50 is the typical model of its size class)FPHFR24A3Awith ductless indoor unit FPHFC24A3B5 of 6 models qualify · AHRI 20512380586.1(50 is the typical model of its size class) (higher)MLB024S4S-1Pwith ductless indoor unit M33C024S4-1PAlso sold as Comfort-Aire A-VMH24SV-114 of 22 models qualify · AHRI 207683534
Non-ducted, 2.5–3 tons77.2(50 is the typical model of its size class)FPHFR36A3Awith ductless indoor unit FPHSC36A3B2 of 6 models qualify · AHRI 20515042190.9(50 is the typical model of its size class) (higher)A-VMH36QV-1A12 of 37 models qualify · AHRI 214377756
Non-ducted, 3.5–4.5 tons41.9(50 is the typical model of its size class)FPHMR42A3A1 of 1 models qualify · AHRI 20514151381.3(50 is the typical model of its size class) (higher)MLB048S4S-2Pwith ductless indoor unit M33C048S4-*P8 of 16 models qualify · AHRI 211034460
Non-ducted, 5 tons and upNo models in this size classNone on this board (0 of 1 models qualify)

All-around best

Best all-around model per size and duct type. Score = 50% heating, the mean of its peer percentiles on COP at 5°F, Capacity retention at 5°F, HSPF2, plus 50% cooling, the mean of its peer percentiles on SEER2 and EER2 (share of the other models in its peer group it beats, 0–100). All five ratings are required; there is no minimum heat kept at 5°F. In each duct type a model is sold in, it is scored on its pairing of that type with the best score; equal scores (one decimal) go to the higher cold-climate score, then the higher heating capacity at 5°F.
Size and duct typeFriedrichAll-around score, best modelLennoxAll-around score, best model
Ducted, up to 1.5 tons57.7(50 is the typical model of its size class)FPHFR09A3Awith ducted air handler FPHFD09A3A14 of 20 models have all five ratings · AHRI 20504819885.6(50 is the typical model of its size class) (higher)MLB009S4S-1Pwith ducted air handler MMDB009S4-2P30 of 31 models have all five ratings · AHRI 207683524
Ducted, 2 tons83.5(50 is the typical model of its size class)FRP18AZ24AJVCwith indoor coil TCFZ2421HEAAM and furnace FR801V0504A17UHU12 of 17 models have all five ratings · AHRI 21382971084.1(50 is the typical model of its size class) (higher)EL22XPV-024-230A**with ducted air handler CBK47UHET-030-230-0Also sold as Armstrong Air 4SHP22LX124P-**A29 of 35 models have all five ratings · AHRI 214861258
Ducted, 2.5–3 tons86.1(50 is the typical model of its size class) (higher)FRP18AZ36AJVCwith ducted air handler FRHMVZ6021SEACA12 of 22 models have all five ratings · AHRI 21308728783.7(50 is the typical model of its size class)A-VMH36QV-1A47 of 69 models have all five ratings · AHRI 214377757
Ducted, 3.5–4.5 tons80.3(50 is the typical model of its size class)FRP18AZ48AJVCwith indoor coil TCFZ6021SEAAM and furnace FR802V1005A21UH17 of 27 models have all five ratings · AHRI 21461015387.7(50 is the typical model of its size class) (higher)SL25XPV-048-230A**with ducted air handler CBA38MV-048-230*+TDR49 of 84 models have all five ratings · AHRI 207436541
Ducted, 5 tons and up70.1(50 is the typical model of its size class) (higher)FWP15AZ60AJ2Nwith indoor coil TCFZ6024STANM and furnace FR97MV1005A21DH1 of 8 models have all five ratings · AHRI 21384173868.9(50 is the typical model of its size class)4HP17L60P-**Awith ducted air handler L(E,G)M60H412 of 18 models have all five ratings · AHRI 212431768
Non-ducted, up to 1.5 tons85.1(50 is the typical model of its size class)MRH09Y3JAwith ductless indoor unit MWH09Y3JA19 of 19 models have all five ratings · AHRI 20176389792.4(50 is the typical model of its size class) (higher)MPC009S4S-1Pwith ductless indoor unit MWMC006S4-2P59 of 66 models have all five ratings · AHRI 213199199
Non-ducted, 2 tons67.5(50 is the typical model of its size class)FPHMR24A3A6 of 6 models have all five ratings · AHRI 20410124684.3(50 is the typical model of its size class) (higher)MLB024S4S-1Pwith ductless indoor unit MWMC024S4-1PAlso sold as Comfort-Aire A-VMH24SV-1, Comfort-Aire A-VMH24SU-1, Comfort-Aire A-KMH24SU-120 of 22 models have all five ratings · AHRI 207683523
Non-ducted, 2.5–3 tons69.4(50 is the typical model of its size class)FPHMR36A3A2 of 6 models have all five ratings · AHRI 20410124786.4(50 is the typical model of its size class) (higher)A-VMH36QV-1A27 of 37 models have all five ratings · AHRI 214377756
Non-ducted, 3.5–4.5 tons44.5(50 is the typical model of its size class)FPHMR42A3A1 of 1 models have all five ratings · AHRI 20514151277.9(50 is the typical model of its size class) (higher)MLB048S4M-2PAlso sold as Comfort-Aire A-VMH48PV-1, Allied 4DHP2S48M-1P11 of 16 models have all five ratings · AHRI 207699107
Non-ducted, 5 tons and upNo models in this size class36.2(50 is the typical model of its size class)GMV-60WL/C-T(U)1 of 1 models have all five ratings · AHRI 214728288

All-around board, every manufacturer

Standout model on each rating

Each manufacturer’s model that beats the largest share of comparable models on the rating; the higher share is in bold.
Top model per rating by peer percentile, with its AHRI-certified value and peer group
RatingFriedrichLennox
COP at 5°Fbeats 97% · 2.80WFPU17Z243CDucted, up to 1.5 tonsbeats 100% · 3.194HP18V36PDucted, 2 tons
Capacity retention at 5°Fbeats 100% · 105%FRP18AZ48AJVCDucted, 3.5–4.5 tonsbeats 100% · 147%4HP17L18P-**ADucted, up to 1.5 tons
HSPF2beats 83% · 9.5FPHFR36A3ADucted, 2.5–3 tonsbeats 99% · 10.3MLB048S4S-1PDucted, 3.5–4.5 tons
SEER2beats 96% · 27.5MRH09Y3JANon-ducted, up to 1.5 tonsbeats 100% · 21.8SL25XPV-048-230A**Ducted, 3.5–4.5 tons
EER2beats 93% · 15.5MRH09Y3JANon-ducted, up to 1.5 tonsbeats 100% · 15.0SL25XPV-024-230A**Ducted, 2 tons
Heating capacity at 5°Fbeats 100% · 43,500 Btu/hFRP18AZ36AJVCDucted, 2.5–3 tonsbeats 100% · 42,926 Btu/hMLB036S4S-2PNon-ducted, 2.5–3 tons

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