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.

Lennox and Rheem 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 and Rheem split the 6 ratings 3–3.

Lennox
Rheem
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	Lennox	Rheem
Efficiency index	48%median — · 22nd ranked	49%median — · 21st ranked
COP at 5°F	46%median 1.95 · 21st ranked	59%median 2.08 · 10th ranked
Capacity retention at 5°F	43%median 62% · 22nd ranked	48%median 66% · 18th ranked
HSPF2	44% (higher)median 8.1 · 21st ranked	43% (higher)median 7.5 · 23rd ranked
SEER2	45% (higher)median 16.0 · 21st ranked	42% (higher)median 15.2 · 23rd ranked
EER2	57% (higher)median 11.7 · 11th ranked	40% (higher)median 10.6 · 25th ranked
Heating capacity at 5°F	45%median 19,000 Btu/h · 22nd ranked	49%median 19,600 Btu/h · 18th ranked
Outdoor models	331	341
AHRI certifications	65,305	25,744

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	Lennox	Rheem
CEE 2025 Tier 1 (Split ASHP)	43.8%145 models	35.5%121 models
CEE 2026 Tier 1 (Split ASHP)	41.4%137 models	33.7%115 models
CEE Advanced Tier (Split ASHP)	2.7%9 models	1.8%6 models
Xcel Energy Colorado cold-climate ASHP (2025)	35.6%118 models	33.7%115 models
DOE Cold Climate Heat Pump Challenge	2.7%9 models	1.8%6 models
ENERGY STAR Cold Climate	29.9%99 models	33.4%114 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 · 10 groups where both have models

Lennox
Rheem
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	Lennox	Rheem
Ducted, up to 1.5 tons	23 · index 59%	33 · index 55%
Ducted, 2 tons	48 · index 46%	35 · index 42%
Ducted, 2.5–3 tons	86 · index 45%	90 · index 46%
Ducted, 3.5–4.5 tons	100 · index 44%	121 · index 49%
Ducted, 5 tons and up	30 · index 46%	31 · index 43%
Non-ducted, up to 1.5 tons	44 · index 55%	38 · index 58%
Non-ducted, 2 tons	16 · index 57%	9 · index 53%
Non-ducted, 2.5–3 tons	16 · index 60%	18 · index 54%
Non-ducted, 3.5–4.5 tons	6 · index 51%	12 · index 49%
Non-ducted, 5 tons and up	4 · index 57%	2 · index 43%

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	LennoxCold-climate score, best model	RheemCold-climate score, best model
Ducted, up to 1.5 tons	86.6(50 is the typical model of its size class)A-VXP18SA-1with ducted air handler WXP18SA16 of 23 models qualify · AHRI 217482406	93.5(50 is the typical model of its size class) (higher)ML06HP230NEXH-Owith ducted air handler ML06HP230LSDUC-I20 of 33 models qualify · AHRI 215864373
Ducted, 2 tons	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	85.7(50 is the typical model of its size class)ML24HP230NEXH-Owith ducted air handler ML24HP230HSDUC-I16 of 34 models qualify · AHRI 215864380
Ducted, 2.5–3 tons	93.4(50 is the typical model of its size class)SL22KLV-036-230A**with ducted air handler CBK48MVT-060-230-29 of 83 models qualify · AHRI 216776011	94.4(50 is the typical model of its size class) (higher)RD18AY36AJVCwith ducted air handler L(E,G)M36FJ28 of 90 models qualify · AHRI 218029736
Ducted, 3.5–4.5 tons	90.8(50 is the typical model of its size class)SL22KLV-060-230A**with indoor coil D(A,C,E)60D3J+TDR and furnace SLP99UH110XV60C27 of 99 models qualify · AHRI 217443918	95.2(50 is the typical model of its size class) (higher)RD18AY48AJVCwith indoor coil D(A,C,E)60B4J+TDR and furnace R801V0754A17DZ33 of 121 models qualify · AHRI 218827549
Ducted, 5 tons and up	83.7(50 is the typical model of its size class) (higher)VPD060H6M-5P5 of 31 models qualify · AHRI 216054512	77.3(50 is the typical model of its size class)SP17AY60AJVCwith indoor coil TCFY6024STANM and furnace S801V1255A24UHNAlso sold as RUUD RP17AY60AJVC2 of 32 models qualify · AHRI 218327534
Non-ducted, up to 1.5 tons	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	94.4(50 is the typical model of its size class)ML06HP230NEXH-Owith ductless indoor unit ML06HP2301WYCAS-I29 of 38 models qualify · AHRI 215864386
Non-ducted, 2 tons	89.4(50 is the typical model of its size class)A-VHP24SA-1with ductless indoor unit B-VHP24CA-112 of 16 models qualify · AHRI 217482451	89.4(50 is the typical model of its size class)ML24HP230NEXH-Owith ductless indoor unit ML24HP230STDCAS-I8 of 8 models qualify · AHRI 215864372
Non-ducted, 2.5–3 tons	82.5(50 is the typical model of its size class)VPD036S6M-5P14 of 16 models qualify · AHRI 216054505	89.4(50 is the typical model of its size class) (higher)ML36HP230LCMH-Owith ductless indoor unit ML36HP230FLO-I16 of 19 models qualify · AHRI 215864403
Non-ducted, 3.5–4.5 tons	73.4(50 is the typical model of its size class)A-VHP486A-15 of 6 models qualify · AHRI 216097135	73.4(50 is the typical model of its size class)ML48HP230MULH-O*Also listed as ML48HP230MULH - O11 of 12 models qualify · AHRI 216623576
Non-ducted, 5 tons and up	84.1(50 is the typical model of its size class)VPD060H6M-5P4 of 4 models qualify · AHRI 216054508	None on this board (0 of 2 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 type	LennoxAll-around score, best model	RheemAll-around score, best model
Ducted, up to 1.5 tons	86.5(50 is the typical model of its size class)A-VHP09SA-1with ducted air handler B-VHP09DA-123 of 23 models have all five ratings · AHRI 217482441	95.0(50 is the typical model of its size class) (higher)ML06HP230NEXH-Owith ducted air handler ML06HP230LSDUC-I32 of 32 models have all five ratings · AHRI 215864373
Ducted, 2 tons	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	78.8(50 is the typical model of its size class)ML24HP230NEX-Owith ducted air handler ML24HP230HSDUC-I33 of 33 models have all five ratings · AHRI 215864360
Ducted, 2.5–3 tons	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	92.7(50 is the typical model of its size class)RD18AY36AJVCwith ducted air handler L(E,G)M36FJ65 of 91 models have all five ratings · AHRI 218029736
Ducted, 3.5–4.5 tons	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	86.3(50 is the typical model of its size class)RD18AY48AJVCwith ducted air handler L(E,G)M60IJ66 of 116 models have all five ratings · AHRI 218029742
Ducted, 5 tons and up	84.6(50 is the typical model of its size class) (higher)VPD060H6M-5P36 of 36 models have all five ratings · AHRI 216054512	70.4(50 is the typical model of its size class)RP17AY60AJVCwith ducted air handler RH2TY6024STANNAlso sold as SURE SP17AY60AJVC22 of 38 models have all five ratings · AHRI 218160613
Non-ducted, up to 1.5 tons	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	93.8(50 is the typical model of its size class)ML06HP230NEXH-Owith ductless indoor unit ML06HP230NEX-I37 of 38 models have all five ratings · AHRI 215864338
Non-ducted, 2 tons	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	76.4(50 is the typical model of its size class)ML24HP230CALH-Owith ductless indoor unit ML24HP230CALH-I8 of 8 models have all five ratings · AHRI 215864348
Non-ducted, 2.5–3 tons	78.8(50 is the typical model of its size class) (higher)VPD036S6M-5P15 of 16 models have all five ratings · AHRI 216054505	78.3(50 is the typical model of its size class)ML36HP230MULH-O*Also listed as ML36HP230MULH - O18 of 19 models have all five ratings · AHRI 216623571
Non-ducted, 3.5–4.5 tons	75.6(50 is the typical model of its size class)A-VHP486A-16 of 6 models have all five ratings · AHRI 216097133	75.6(50 is the typical model of its size class)ML48HP230MULH-O*Also listed as ML48HP230MULH - O12 of 12 models have all five ratings · AHRI 216623574
Non-ducted, 5 tons and up	91.6(50 is the typical model of its size class) (higher)VPD060H6M-5P4 of 4 models have all five ratings · AHRI 216054508	58.6(50 is the typical model of its size class)ML55HP230MUL-O*2 of 2 models have all five ratings · AHRI 216623550

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	Lennox	Rheem
COP at 5°F	beats 100% · 4.067HP14F30P-**ADucted, 2.5–3 tons	beats 100% · 3.05RP15AY24AJ2NDucted, up to 1.5 tons
Capacity retention at 5°F	beats 100% · 150%A-ZHP06SA-1Non-ducted, up to 1.5 tons	beats 100% · 150%ML06HP230CALH-ONon-ducted, up to 1.5 tons
HSPF2	beats 100% · 15.6A-ZHP06SA-1Non-ducted, up to 1.5 tons	beats 100% · 15.6ML06HP230CALH-ONon-ducted, up to 1.5 tons
SEER2	beats 100% · 27.0A-ZHP15SA-1Ducted, up to 1.5 tons	beats 100% · 35.0ML06HP230CALH-ONon-ducted, up to 1.5 tons
EER2	beats 100% · 15.0EL16KP1-018-230A**Also listed as ML14KP1-018-230ADucted, up to 1.5 tons	beats 99% · 17.4ML06HP230CALH-ONon-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 100% · 54,000 Btu/hMMLD024S6S-1PNon-ducted, 2 tons	beats 100% · 35,800 Btu/hRP15AY30AJ2NDucted, 2 tons

More comparisons

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Lennox vs Rheem heat pumps