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

Source: AHRI Directory, NEEP · as of Oct 9, 2026

Average peer percentile, raw median and rank among ranked manufacturers
Rating	Friedrich	Lennox
Efficiency index	39%median — · 28th ranked	48%median — · 22nd ranked
COP at 5°F	46%median 1.99 · 22nd ranked	46%median 1.95 · 21st ranked
Capacity retention at 5°F	36%median 52% · 26th ranked	43%median 62% · 22nd ranked
HSPF2	31%median 7.5 · 28th ranked	44%median 8.1 · 21st ranked
SEER2	34%median 15.2 · 28th ranked	45%median 16.0 · 21st ranked
EER2	37%median 10.6 · 27th ranked	57%median 11.7 · 11th ranked
Heating capacity at 5°F	35%median 17,000 Btu/h · 28th ranked	45%median 19,000 Btu/h · 22nd ranked
Outdoor models	188	331
AHRI certifications	6,657	65,305

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	Friedrich	Lennox
CEE 2025 Tier 1 (Split ASHP)	26.6%50 models	43.8%145 models
CEE 2026 Tier 1 (Split ASHP)	23.9%45 models	41.4%137 models
CEE Advanced Tier (Split ASHP)	0.5%1 models	2.7%9 models
Xcel Energy Colorado cold-climate ASHP (2025)	21.3%40 models	35.6%118 models
DOE Cold Climate Heat Pump Challenge	0.5%1 models	2.7%9 models
ENERGY STAR Cold Climate	22.3%42 models	29.9%99 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

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

Source: AHRI Directory · as of Oct 9, 2026

Models per peer group · efficiency index within the group
Size and duct type	Friedrich	Lennox
Ducted, up to 1.5 tons	21 · index 30%	23 · index 59%
Ducted, 2 tons	21 · index 31%	48 · index 46%
Ducted, 2.5–3 tons	46 · index 37%	86 · index 45%
Ducted, 3.5–4.5 tons	58 · index 41%	100 · index 44%
Ducted, 5 tons and up	21 · index 31%	30 · index 46%
Non-ducted, up to 1.5 tons	20 · index 55%	44 · index 55%
Non-ducted, 2 tons	5 · index 50%	16 · index 57%
Non-ducted, 2.5–3 tons	4 · index 47%	16 · index 60%
Non-ducted, 3.5–4.5 tons	2 · index 47%	6 · index 51%
Non-ducted, 5 tons and up	None	4 · index 57%

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 type	FriedrichCold-climate score, best model	LennoxCold-climate score, best model
Ducted, up to 1.5 tons	73.0(50 is the typical model of its size class)FPHFR24A3Dwith ducted air handler FPHFA18A3D5 of 21 models qualify · AHRI 217505657	86.6(50 is the typical model of its size class) (higher)A-VXP18SA-1with ducted air handler WXP18SA16 of 23 models qualify · AHRI 217482406
Ducted, 2 tons	70.3(50 is the typical model of its size class)RD18AY24AJVCwith indoor coil RCFY2417STANM and furnace FR801V0504A17UHU4 of 21 models qualify · AHRI 217176021	88.5(50 is the typical model of its size class) (higher)SL22KLV-024-230A**with ducted air handler CBK48MVT-042-230-27 of 51 models qualify · AHRI 216379010
Ducted, 2.5–3 tons	78.1(50 is the typical model of its size class)RD18AY36AJVCwith indoor coil RCFY3621MTANM and furnace FR801V0504A17UHN6 of 46 models qualify · AHRI 216891246	93.4(50 is the typical model of its size class) (higher)SL22KLV-036-230A**with ducted air handler CBK48MVT-060-230-29 of 83 models qualify · AHRI 216776011
Ducted, 3.5–4.5 tons	83.9(50 is the typical model of its size class)FPHFR48A3Dwith ducted air handler FPHFA48A3D8 of 57 models qualify · AHRI 217508872	90.8(50 is the typical model of its size class) (higher)SL22KLV-060-230A**with indoor coil D(A,C,E)60D3J+TDR and furnace SLP99UH110XV60C27 of 99 models qualify · AHRI 217443918
Ducted, 5 tons and up	77.3(50 is the typical model of its size class)FRP17AY60AJVCwith indoor coil RCFY6024STANM and furnace FR802V1255A24UHN1 of 22 models qualify · AHRI 218328124	83.7(50 is the typical model of its size class) (higher)VPD060H6M-5P5 of 31 models qualify · AHRI 216054512
Non-ducted, up to 1.5 tons	82.4(50 is the typical model of its size class)FPHSR09A3Bwith ductless indoor unit FAHFW09A3AAlso listed as FPHSR09A3D16 of 20 models qualify · AHRI 214232408	96.7(50 is the typical model of its size class) (higher)A-VHP06SA-1with ductless indoor unit B-VHP06SA-131 of 44 models qualify · AHRI 216097104
Non-ducted, 2 tons	76.3(50 is the typical model of its size class)FPHFR24A3Dwith ductless indoor unit FPHFC24A3D5 of 5 models qualify · AHRI 216626155	89.4(50 is the typical model of its size class) (higher)A-VHP24SA-1with ductless indoor unit B-VHP24CA-112 of 16 models qualify · AHRI 217482451
Non-ducted, 2.5–3 tons	58.2(50 is the typical model of its size class)FPHFR36A3Dwith ductless indoor unit FPHSC36A3D3 of 4 models qualify · AHRI 216699608	82.5(50 is the typical model of its size class) (higher)VPD036S6M-5P14 of 16 models qualify · AHRI 216054505
Non-ducted, 3.5–4.5 tons	49.7(50 is the typical model of its size class)FPHFR48A3Dwith ductless indoor unit FPHSC48A3D2 of 2 models qualify · AHRI 216699609	73.4(50 is the typical model of its size class) (higher)A-VHP486A-15 of 6 models qualify · AHRI 216097135
Non-ducted, 5 tons and up	No models in this size class	84.1(50 is the typical model of its size class)VPD060H6M-5P4 of 4 models qualify · AHRI 216054508

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 type	FriedrichAll-around score, best model	LennoxAll-around score, best model
Ducted, up to 1.5 tons	67.4(50 is the typical model of its size class)FPHFR24A3Dwith ducted air handler FPHFA18A3D20 of 20 models have all five ratings · AHRI 217505657	86.5(50 is the typical model of its size class) (higher)A-VHP09SA-1with ducted air handler B-VHP09DA-123 of 23 models have all five ratings · AHRI 217482441
Ducted, 2 tons	75.1(50 is the typical model of its size class)FRP19AY24AJVCwith indoor coil RCFY2421HEAAM and furnace FR951V0603A17M421 of 21 models have all five ratings · AHRI 216551633	89.9(50 is the typical model of its size class) (higher)A-ZHP24SA-1with ducted air handler B-ZHP24SA-147 of 47 models have all five ratings · AHRI 218027842
Ducted, 2.5–3 tons	84.1(50 is the typical model of its size class)RD18AY36AJVCwith ducted air handler RH2VY3621MTACN30 of 46 models have all five ratings · AHRI 216613170	95.0(50 is the typical model of its size class) (higher)SL22KLV-036-230A**with ducted air handler CBK48MVT-060-230-84 of 84 models have all five ratings · AHRI 216776011
Ducted, 3.5–4.5 tons	84.1(50 is the typical model of its size class)FRP19AY48AJVCwith indoor coil RCFY4821SEAAM and furnace FR802V0754A17UH32 of 54 models have all five ratings · AHRI 216551827	86.7(50 is the typical model of its size class) (higher)SL22KLV-048-230Awith indoor coil CK40[C,U]T-60C-+TDR and furnace SL280UH080NV60C97 of 97 models have all five ratings · AHRI 216776088
Ducted, 5 tons and up	70.3(50 is the typical model of its size class)FRP17AY60AJVCwith ducted air handler RH2TY6024STANN14 of 26 models have all five ratings · AHRI 218328406	84.6(50 is the typical model of its size class) (higher)VPD060H6M-5P36 of 36 models have all five ratings · AHRI 216054512
Non-ducted, up to 1.5 tons	83.9(50 is the typical model of its size class)FPHSR09A3Bwith ductless indoor unit FAHFW09A3AAlso listed as FPHSR09A3D20 of 20 models have all five ratings · AHRI 214232408	96.2(50 is the typical model of its size class) (higher)A-VHP06SA-1with ductless indoor unit B-VHP06SA-140 of 44 models have all five ratings · AHRI 216097104
Non-ducted, 2 tons	61.6(50 is the typical model of its size class)FPHSR24A3Bwith ductless indoor unit FAHFW24A3AAlso listed as FPHSR24A3D5 of 5 models have all five ratings · AHRI 214091820	88.4(50 is the typical model of its size class) (higher)A-KZP24SA-1with ductless indoor unit B-KZP24SA-114 of 16 models have all five ratings · AHRI 218027843
Non-ducted, 2.5–3 tons	64.2(50 is the typical model of its size class)FPHMR27A3D4 of 4 models have all five ratings · AHRI 215792839	78.8(50 is the typical model of its size class) (higher)VPD036S6M-5P15 of 16 models have all five ratings · AHRI 216054505
Non-ducted, 3.5–4.5 tons	49.6(50 is the typical model of its size class)FPHFR48A3Dwith ductless indoor unit FPHSC48A3D2 of 2 models have all five ratings · AHRI 216699609	75.6(50 is the typical model of its size class) (higher)A-VHP486A-16 of 6 models have all five ratings · AHRI 216097133
Non-ducted, 5 tons and up	No models in this size class	91.6(50 is the typical model of its size class)VPD060H6M-5P4 of 4 models have all five ratings · AHRI 216054508

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
Rating	Friedrich	Lennox
COP at 5°F	beats 98% · 2.61WFPU17Y243DDucted, up to 1.5 tons	beats 100% · 4.067HP14F30P-**ADucted, 2.5–3 tons
Capacity retention at 5°F	beats 100% · 133%FPHFR09A3DDucted, up to 1.5 tons	beats 100% · 150%A-ZHP06SA-1Non-ducted, up to 1.5 tons
HSPF2	beats 86% · 10.0FRP19AY60AJVCDucted, 3.5–4.5 tons	beats 100% · 15.6A-ZHP06SA-1Non-ducted, up to 1.5 tons
SEER2	beats 98% · 21.0FRP19AY36AJVCDucted, 2.5–3 tons	beats 100% · 27.0A-ZHP15SA-1Ducted, up to 1.5 tons
EER2	beats 96% · 13.0RD18AY36AJVCDucted, 2.5–3 tons	beats 100% · 15.0EL16KP1-018-230A**Also listed as ML14KP1-018-230ADucted, up to 1.5 tons
Heating capacity at 5°F	beats 96% · 18,600 Btu/hRD18AY24AJVCDucted, up to 1.5 tons	beats 100% · 54,000 Btu/hMMLD024S6S-1PNon-ducted, 2 tons

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Friedrich vs Lennox heat pumps