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Lennox heat pump efficiency: 331 outdoor models compared

Lennox has 331 heat pump outdoor models certified with this refrigerant group, in 65,305 AHRI-certified combinations. They are also sold as AIREASE, ALLIED, ALLIED COMMERCIAL, ARMSTRONG AIR, CONCORD, Comfort Aire, DUCANE. Each model is compared with models of the same size and duct type, so the scores below do not depend on which sizes Lennox makes. Ranks are among manufacturers with a QMID on file and at least 10 scored models.

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ManufacturerData as of updated · sources

Outdoor models
331
AHRI certifications
65,305
Efficiency index
48%
Typical model vs same-size, same-type peers (366 models)
Meet CEE 2025
43.8%
145 models

How Lennox compares with comparable models

For each rating: the share of same-size, same-type models that a typical model of this manufacturer beats (50% is typical), its rank, and the raw median for context. Raw medians are not comparable across manufacturers that make different sizes.
Lennox against every ranked manufacturerPeer scores, 0–100 · grey ticks: each ranked manufacturer · shaded: the middle half of Lennox’s own modelsLennox is strongest on EER2 (its typical model beats 57% of comparable models) and weakest on capacity retention at 5°F (43%).
  • Lennox
  • Middle half of its models
  • Other ranked manufacturers
Lennox

Source: AHRI Directory, NEEP · as of

Average peer percentile of Lennox’s models
RatingBeats comparable modelsRankRaw median
Efficiency index366 models scored48%22nd of 29—
COP at 5°F367 models scored46%21st of 291.95
Capacity retention at 5°F367 models scored43%22nd of 2962%
HSPF2372 models scored44%21st of 298.1
SEER2373 models scored45%21st of 2916.0
EER2373 models scored57%11th of 2911.7
Heating capacity at 5°F367 models scored45%22nd of 2919,000 Btu/h

Standards met

Share of Lennox’s models with at least one qualifying certification
StandardShareModels
CEE 2025 Tier 1 (Split ASHP)43.8%145
CEE 2026 Tier 1 (Split ASHP)41.4%137
CEE Advanced Tier (Split ASHP)2.7%9
Xcel Energy Colorado cold-climate ASHP (2025)35.6%118
DOE Cold Climate Heat Pump Challenge2.7%9
ENERGY STAR Cold Climate29.9%99

Sizes and duct types offered

Models per peer group, and how they score against the other models of that group.
Lennox’s models inside each size and duct typeShape: every model of the group · blue: the middle half of this manufacturer’s models there, median dot, 10th–90th percentile line
  • Lennox (median, middle 50%, 10th–90th)
  • All models of the group
Ducted, up to 1.5 tons1.901,783 modelsDucted, 2 tons2.001,090 modelsDucted, 2.5–3 tons2.001,909 modelsDucted, 3.5–4.5 tons2.002,224 modelsDucted, 5 tons and up2.00321 modelsNon-ducted, up to 1.5 tons1.953,455 modelsNon-ducted, 2 tons2.00863 modelsNon-ducted, 2.5–3 tons2.001,106 modelsNon-ducted, 3.5–4.5 tons2.00564 modelsNon-ducted, 5 tons and up2.0585 modelsmedian

Source: AHRI Directory · as of

Share of comparable models beaten, per peer group
Size and duct typeModelsIndexCOP@5°FHSPF2SEER2
Ducted, up to 1.5 tons2359%62%46%59%
Ducted, 2 tons4846%47%43%42%
Ducted, 2.5–3 tons8645%42%41%41%
Ducted, 3.5–4.5 tons10044%47%40%42%
Ducted, 5 tons and up3046%47%44%42%
Non-ducted, up to 1.5 tons4455%50%50%51%
Non-ducted, 2 tons1657%46%49%49%
Non-ducted, 2.5–3 tons1660%40%58%50%
Non-ducted, 3.5–4.5 tons651%40%57%51%
Non-ducted, 5 tons and up457%21%83%55%

Every Lennox model in the market

Lennox’s 373 models with a known size and duct type, over the shape of the whole catalog.
Lennox models by size and ratingColoured: Lennox · grey shapes: all 14,508 models · lines: catalog medians by size
  • Lennox models
  • Ducted median by size
  • Non-ducted median by size
  • Every model at each size (width = count)
  • Standard threshold

Dots: 373 lennox models, each through its representative certification, in the colour of the rating shown. The grey shapes count all 14,508 models, half a ton at a time.
Show the data as a table
COP at 5°F by size and duct type (every model, by rated cooling capacity)
Duct type, sizeModels10th pct.25thMedian75th90th
Ducted, 0.5 tons8261.641.711.751.852.24
Ducted, 1 ton4071.801.902.052.412.45
Ducted, 1.5 tons9921.751.862.002.172.40
Ducted, 2 tons9991.751.862.002.182.30
Ducted, 2.5 tons1,0401.701.802.002.102.36
Ducted, 3 tons6961.801.902.002.102.42
Ducted, 3.5 tons8641.701.802.002.102.46
Ducted, 4 tons7271.801.862.002.122.40
Ducted, 4.5 tons6901.701.801.902.102.20
Ducted, 5 tons861.892.002.102.102.10
Non-ducted, 0.5 tons1,1861.751.801.902.002.22
Non-ducted, 1 ton1,3431.801.801.992.102.21
Non-ducted, 1.5 tons1,2611.801.802.002.102.31
Non-ducted, 2 tons7611.801.982.002.102.30
Non-ducted, 2.5 tons4031.801.852.002.002.10
Non-ducted, 3 tons4731.901.982.002.032.20
Non-ducted, 3.5 tons2802.002.002.002.052.10
Non-ducted, 4 tons2041.962.002.052.102.11
Non-ducted, 4.5 tons781.901.911.952.012.01
Non-ducted, 5 tons841.992.002.052.202.20

Source: AHRI Directory · as of

Top Lennox models

Its top five cold-climate picks and its top five all-around models across sizes (both scores compare each model with models of its own size and duct type, so sizes compare), then, on each single rating, the model that beats the largest share of comparable models.

Cold-climate picks

Top 5 Lennox cold-climate picks across sizes. 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.
# · Outdoor modelSize · typeCap. 5/47COP@5°FHSPF2Btu/h @5°FSEER2MeetsCombosAHRI ref.Compared withScore
1A-VHP06SA-1COMFORT-AIRE · A-VHP Serieswith ductless indoor unit B-VHP06SA-10.5 tons6,000 Btu/h · Non-ducted110%2.4014.87,70025.5CEE 25CEE 26CEE AdvXcelDOEES CC4216097104Non-ducted, up to 1.5 tons96.7
2SL22KLV-036-230A**LENNOX · DAVE LENNOX SIGNATURE SL22KLV SERIESwith ducted air handler CBK48MVT-060-230-3 tons35,200 Btu/h · Ducted102%2.4210.533,20020.0CEE 25CEE 26CEE AdvXcelDOEES CC182216776011Ducted, 2.5–3 tons93.4
3MWLD015S6S-1PLENNOX · MWLD Mini-Splitwith ductless indoor unit MWMD015S6-1PAlso listed as MWPD015S6S-1P1.5 tons15,000 Btu/h · Non-ducted104%2.5011.015,60023.0CEE 25CEE 26CEE AdvXcelDOEES CC1216411307Non-ducted, up to 1.5 tons92.1
4SL22KLV-060-230A**LENNOXwith indoor coil D(A,C,E)60D3J+TDR and furnace SLP99UH110XV60C4.5 tons52,500 Btu/h · Ducted115%3.099.060,00020.0CEE 25CEE 26CEE AdvXcelDOEES CC199217443918Ducted, 3.5–4.5 tons90.8
5A-VHP24SA-1Comfort Aire · A Serieswith ductless indoor unit B-VHP24CA-12 tons23,400 Btu/h · Non-ducted95%2.2311.623,80020.7CEE 25CEE 26XcelES CC10217482451Non-ducted, 2 tons89.4

All-around best

Top 5 Lennox models on the all-around score across sizes. 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.
# · Outdoor modelSize · typeCap. 5/47COP@5°FHSPF2SEER2EER2MeetsCombosAHRI ref.Compared withScoreHeating halfCooling halfCold-climate score
1A-VHP06SA-1COMFORT-AIRE · A-VHP Serieswith ductless indoor unit B-VHP06SA-10.5 tons6,000 Btu/h · Non-ducted110%2.4014.825.518.0CEE 25CEE 26CEE AdvXcelDOEES CC4216097104Non-ducted, up to 1.5 tons96.296.795.796.7
2SL22KLV-036-230A**LENNOX · DAVE LENNOX SIGNATURE SL22KLV SERIESwith ducted air handler CBK48MVT-060-230-3 tons35,200 Btu/h · Ducted102%2.4210.520.013.0CEE 25CEE 26CEE AdvXcelDOEES CC182216776011Ducted, 2.5–3 tons95.093.496.693.4
3A-ZHP06SA-1COMFORT-AIRE · A-ZHP Serieswith ductless indoor unit B-ZHP06SA-10.5 tons6,000 Btu/h · Non-ducted150%2.0015.635.017.4CEE 25CEE 26XcelES CC2216097116Non-ducted, up to 1.5 tons93.487.699.287.6
4A-ZHPO9SA-1COMFORT-AIRE · A-ZHP Serieswith ductless indoor unit B-ZHPO9SA-1Also sold as Comfort Aire A-ZHP09SA-11 ton9,000 Btu/h · Non-ducted113%2.0014.633.317.0CEE 25CEE 26XcelES CC2216097117Non-ducted, up to 1.5 tons92.385.998.785.9
5VPD060H6M-5PLENNOX · DVM S Mini5 tons60,000 Btu/h · Non-ducted85%2.1111.023.013.8CEE 25CEE 26XcelES CC3216054508Non-ducted, 5 tons and up91.684.199.184.1

Best model on each rating

Lennox’s model with the highest peer percentile on each rating, ranked by that one rating only
RatingModelValueCompared withBeatsAHRI ref.
COP at 5°F7HP14F30P-**A4.06Ducted, 2.5–3 tons100%218807830
Capacity retention at 5°FA-ZHP06SA-1150%Non-ducted, up to 1.5 tons100%216097116
HSPF2A-ZHP06SA-115.6Non-ducted, up to 1.5 tons100%216097116
SEER2A-ZHP15SA-127.0Ducted, up to 1.5 tons100%218404560
EER2EL16KP1-018-230A**Also listed as ML14KP1-018-230A15.0Ducted, up to 1.5 tons100%217608783
Heating capacity at 5°FMMLD024S6S-1P54,000 Btu/hNon-ducted, 2 tons100%215810029

All 331 Lennox models in Explore

Lennox size class by size class: cold-climate and all-around

Its best model on each board in every size and duct type it makes. Both scores are 0–100 against every model of that size class (the line on each bar is 50, the typical model there). Cold-climate picks must keep at least 70% of their heat at 5°F; the all-around score needs all five ratings and has no such bar.
Lennox: best cold-climate pick and best all-around model per size and duct type, with how many of its models are on each board (top 5 and 5 per class are in the snapshot)
Size and duct typeCold-climate pickCold-climate score, best modelAll-around bestAll-around score, best model
Ducted, up to 1.5 tons86.6(50 is the typical model of its size class)A-VXP18SA-1with ducted air handler WXP18SA16 of 23 models qualify · AHRI 21748240686.5(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
Ducted, 2 tons88.5(50 is the typical model of its size class)SL22KLV-024-230A**with ducted air handler CBK48MVT-042-230-27 of 51 models qualify · AHRI 21637901089.9(50 is the typical model of its size class)A-ZHP24SA-1with ducted air handler B-ZHP24SA-147 of 47 models have all five ratings · AHRI 218027842
Ducted, 2.5–3 tons93.4(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 21677601195.0(50 is the typical model of its size class)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 tons90.8(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 21744391886.7(50 is the typical model of its size class)SL22KLV-048-230A**with indoor coil CK40[C,U]T-60C-**+TDR and furnace SL280UH080NV60C97 of 97 models have all five ratings · AHRI 216776088
Ducted, 5 tons and up83.7(50 is the typical model of its size class)VPD060H6M-5P5 of 31 models qualify · AHRI 21605451284.6(50 is the typical model of its size class)VPD060H6M-5P36 of 36 models have all five ratings · AHRI 216054512
Non-ducted, up to 1.5 tons96.7(50 is the typical model of its size class)A-VHP06SA-1with ductless indoor unit B-VHP06SA-131 of 44 models qualify · AHRI 21609710496.2(50 is the typical model of its size class)A-VHP06SA-1with ductless indoor unit B-VHP06SA-140 of 44 models have all five ratings · AHRI 216097104
Non-ducted, 2 tons89.4(50 is the typical model of its size class)A-VHP24SA-1with ductless indoor unit B-VHP24CA-112 of 16 models qualify · AHRI 21748245188.4(50 is the typical model of its size class)A-KZP24SA-1with ductless indoor unit B-KZP24SA-114 of 16 models have all five ratings · AHRI 218027843
Non-ducted, 2.5–3 tons82.5(50 is the typical model of its size class)VPD036S6M-5P14 of 16 models qualify · AHRI 21605450578.8(50 is the typical model of its size class)VPD036S6M-5P15 of 16 models have all five ratings · AHRI 216054505
Non-ducted, 3.5–4.5 tons73.4(50 is the typical model of its size class)A-VHP486A-15 of 6 models qualify · AHRI 21609713575.6(50 is the typical model of its size class)A-VHP486A-16 of 6 models have all five ratings · AHRI 216097133
Non-ducted, 5 tons and up84.1(50 is the typical model of its size class)VPD060H6M-5P4 of 4 models qualify · AHRI 21605450891.6(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

Newest Lennox certifications

By AHRI reference number; AHRI issues references in increasing order.
The 5 most recently certified Lennox outdoor models
Outdoor modelSize · typeCOP@5°FCap. 5/47HSPF2SEER2MeetsCombosAHRI ref.
ML16KP2-048-230A**LENNOXwith ducted air handler V3642B-*EC*E**13.5 tons41,000 Btu/h · Ducted1.7854%6.812.2CEE 25CEE 26317218828014
ML16KP2-036-230A**LENNOXwith ducted air handler V3036B-*EC*E**12.5 tons31,600 Btu/h · Ducted1.6853%6.812.2CEE 25CEE 26475218828011
ML16KP2-024-230A**LENNOXwith ducted air handler V2430B-*EC*E**11.5 tons20,600 Btu/h · Ducted1.7253%6.812.2CEE 25CEE 26218218828006
BHB714S24P-**ACONCORDwith ducted air handler 7AHWAE25PX**-712 tons22,200 Btu/h · Ducted1.9854%7.514.3None22218827284
BHB714S18P-**ACONCORDwith ducted air handler 7AHWAE25PX**-711.5 tons16,900 Btu/h · Ducted1.8649%7.514.3None18218827283

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Lennox includes these brand names as listed in AHRI: AIREASE, ALLIED, ALLIED COMMERCIAL, ARMSTRONG AIR, CONCORD, Comfort Aire, DUCANE, LENNOX. Standards are checked against published thresholds; program rules beyond ratings are not checked.