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Kerr Kapstone heat pump efficiency: 12 outdoor models compared

Kerr Kapstone has 12 heat pump outdoor models certified with this refrigerant group, in 26 AHRI-certified combinations. Each model is compared with models of the same size and duct type, so the scores below do not depend on which sizes Kerr Kapstone makes. Kerr Kapstone has no QMID (IRS Qualified Manufacturer ID) on file, so it is not ranked against other manufacturers.

New to heat pump ratings? The Simple view explains them in plain words →

ManufacturerData as of updated · sources

Outdoor models
12
AHRI certifications
26
Efficiency index
73%
Typical model vs same-size, same-type peers (11 models)
Meet CEE 2025
91.7%
11 models

How Kerr Kapstone 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.
Kerr Kapstone against every ranked manufacturerPeer scores, 0–100 · grey ticks: each ranked manufacturer · shaded: the middle half of Kerr Kapstone’s own modelsKerr Kapstone is strongest on HSPF2 (its typical model beats 85% of comparable models) and weakest on COP at 5°F (56%).
  • Kerr Kapstone
  • Middle half of its models
  • Other ranked manufacturers
Kerr Kap…

Source: AHRI Directory, NEEP · as of

Average peer percentile of Kerr Kapstone’s models
RatingBeats comparable modelsRankRaw median
Efficiency index11 models scored73%Not ranked—
COP at 5°F12 models scored56%Not ranked2.00
Capacity retention at 5°F12 models scored84%Not ranked95%
HSPF211 models scored85%Not ranked10.3
SEER212 models scored77%Not ranked21.7
EER212 models scored70%Not ranked12.4
Heating capacity at 5°F12 models scored82%Not ranked20,800 Btu/h

Standards met

Share of Kerr Kapstone’s models with at least one qualifying certification
StandardShareModels
CEE 2025 Tier 1 (Split ASHP)91.7%11
CEE 2026 Tier 1 (Split ASHP)91.7%11
CEE Advanced Tier (Split ASHP)0%0
Xcel Energy Colorado cold-climate ASHP (2025)100%12
DOE Cold Climate Heat Pump Challenge0%0
ENERGY STAR Cold Climate100%12

Sizes and duct types offered

Models per peer group, and how they score against the other models of that group.
Kerr Kapstone’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
  • Kerr Kapstone (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 modelsNon-ducted, up to 1.5 tons1.953,455 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 tons274%68%77%76%
Ducted, 2 tons275%55%89%82%
Ducted, 2.5–3 tons265%37%89%57%
Ducted, 3.5–4.5 tons248%35%65%50%
Non-ducted, up to 1.5 tons492%71%98%97%

Every Kerr Kapstone model in the market

Kerr Kapstone’s 12 models with a known size and duct type, over the shape of the whole catalog.
Kerr Kapstone models by size and ratingColoured: Kerr Kapstone · grey shapes: all 14,508 models · lines: catalog medians by size
  • Kerr Kapstone models
  • Ducted median by size
  • Non-ducted median by size
  • Every model at each size (width = count)
  • Standard threshold

Dots: 12 kerr kapstone 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 Kerr Kapstone 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 Kerr Kapstone 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-KZP06SA-1Kerr Kapstone · A Serieswith ductless indoor unit B-KZP06SA-10.5 tons6,000 Btu/h · Non-ducted150%2.0015.613,50035.0CEE 25CEE 26XcelES CC1217478336Non-ducted, up to 1.5 tons87.6
2A-KZP09SA-1Kerr Kapstone · A Serieswith ductless indoor unit B-KZP09SA-11 ton9,000 Btu/h · Non-ducted113%2.0014.613,50033.3CEE 25CEE 26XcelES CC1217478337Non-ducted, up to 1.5 tons85.9
3A-KZP12SA-1Kerr Kapstone · A Serieswith ductless indoor unit B-KZP12SA-11 ton12,000 Btu/h · Non-ducted113%2.0012.713,50029.4CEE 25CEE 26XcelES CC1217478338Non-ducted, up to 1.5 tons85.4
4A-KZP24SA-1Kerr Kapstone · A-KZP Serieswith ducted air handler B-KZP24SA-12 tons24,000 Btu/h · Ducted83%2.2011.020,00025.0CEE 25CEE 26XcelES CC1218404575Ducted, 2 tons80.5
5A-KZP15SA-1Kerr Kapstone · A-KZP Serieswith ducted air handler B-KZP15SA-11.5 tons15,000 Btu/h · Ducted90%2.0011.013,50027.0CEE 25CEE 26XcelES CC1218404574Ducted, up to 1.5 tons75.1

All-around best

Top 5 Kerr Kapstone 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-KZP06SA-1Kerr Kapstone · A Serieswith ductless indoor unit B-KZP06SA-10.5 tons6,000 Btu/h · Non-ducted150%2.0015.635.017.4CEE 25CEE 26XcelES CC1217478336Non-ducted, up to 1.5 tons93.487.699.287.6
2A-KZP09SA-1Kerr Kapstone · A Serieswith ductless indoor unit B-KZP09SA-11 ton9,000 Btu/h · Non-ducted113%2.0014.633.317.0CEE 25CEE 26XcelES CC1217478337Non-ducted, up to 1.5 tons92.385.998.785.9
3A-KZP24SA-1Kerr Kapstone · A-KZP Serieswith ducted air handler B-KZP24SA-12 tons24,000 Btu/h · Ducted83%2.2011.025.014.0CEE 25CEE 26XcelES CC1218404575Ducted, 2 tons89.980.599.480.5
4A-KZP12SA-1Kerr Kapstone · A Serieswith ductless indoor unit B-KZP12SA-11 ton12,000 Btu/h · Non-ducted113%2.0012.729.414.2CEE 25CEE 26XcelES CC1217478338Non-ducted, up to 1.5 tons88.885.492.285.4
5A-KZP15SA-1Kerr Kapstone · A-KZP Serieswith ducted air handler B-KZP15SA-11.5 tons15,000 Btu/h · Ducted90%2.0011.027.013.0CEE 25CEE 26XcelES CC1218404574Ducted, up to 1.5 tons83.975.192.775.1

Best model on each rating

Kerr Kapstone’s model with the highest peer percentile on each rating, ranked by that one rating only
RatingModelValueCompared withBeatsAHRI ref.
COP at 5°FA-KZP18SA-12.34Non-ducted, up to 1.5 tons94%217478339
Capacity retention at 5°FA-KZP06SA-1150%Non-ducted, up to 1.5 tons100%217478336
HSPF2A-KZP06SA-115.6Non-ducted, up to 1.5 tons100%217478336
SEER2A-KZP15SA-127.0Ducted, up to 1.5 tons100%218404574
EER2A-KZP06SA-117.4Non-ducted, up to 1.5 tons99%217478336
Heating capacity at 5°FA-KZP18SA-122,600 Btu/hNon-ducted, up to 1.5 tons99%217478339

All 12 Kerr Kapstone models in Explore

Kerr Kapstone 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.
Kerr Kapstone: 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 tons75.1(50 is the typical model of its size class)A-KZP15SA-1with ducted air handler B-KZP15SA-12 of 2 models qualify · AHRI 21840457483.9(50 is the typical model of its size class)A-KZP15SA-1with ducted air handler B-KZP15SA-12 of 2 models have all five ratings · AHRI 218404574
Ducted, 2 tons80.5(50 is the typical model of its size class)A-KZP24SA-1with ducted air handler B-KZP24SA-12 of 2 models qualify · AHRI 21840457589.9(50 is the typical model of its size class)A-KZP24SA-1with ducted air handler B-KZP24SA-12 of 2 models have all five ratings · AHRI 218404575
Ducted, 2.5–3 tons73.1(50 is the typical model of its size class)A-KX12P36SA-1with ducted air handler B-KX12P36SA-12 of 2 models qualify · AHRI 21747834367.3(50 is the typical model of its size class)A-KX12P36SA-1with ducted air handler B-KX12P36SA-12 of 2 models have all five ratings · AHRI 217478343
Ducted, 3.5–4.5 tons68.8(50 is the typical model of its size class)A-KX12P48SA-1with ducted air handler B-KX12P48SA-12 of 2 models qualify · AHRI 21747834457.1(50 is the typical model of its size class)A-KX12P48SA-1with ducted air handler B-KX12P48SA-12 of 2 models have all five ratings · AHRI 217478344
Non-ducted, up to 1.5 tons87.6(50 is the typical model of its size class)A-KZP06SA-1with ductless indoor unit B-KZP06SA-13 of 4 models qualify · AHRI 21747833693.4(50 is the typical model of its size class)A-KZP06SA-1with ductless indoor unit B-KZP06SA-13 of 4 models have all five ratings · AHRI 217478336

All-around board, every manufacturer

Newest Kerr Kapstone certifications

By AHRI reference number; AHRI issues references in increasing order.
The 5 most recently certified Kerr Kapstone outdoor models
Outdoor modelSize · typeCOP@5°FCap. 5/47HSPF2SEER2MeetsCombosAHRI ref.
A-KX12P60SA-1Kerr Kapstone · A Serieswith ducted air handler MXP48/60D1A4 tons47,000 Btu/h · Ducted1.8374%8.115.2CEE 25CEE 26XcelES CC3218724447
A-KX12P48SA-1Kerr Kapstonewith ducted air handler MXP48/60D1A4 tons45,000 Btu/h · Ducted1.8085%8.414.5CEE 25CEE 26XcelES CC3218724445
A-KX12P36SA-1Kerr Kapstone · A Serieswith ducted air handler MXP24/36C1A3 tons36,000 Btu/h · Ducted1.9095%9.415.8CEE 25CEE 26XcelES CC4218724443
A-KX12P30SA-1Kerr Kapstone · A Serieswith ducted air handler MXP24/36C1A2.5 tons29,000 Btu/h · Ducted1.85107%9.616.0CEE 25CEE 26XcelES CC4218724440
A-KX12P24SA-1Kerr Kapstone · A Serieswith ducted air handler MXP18/24B1A2 tons24,000 Btu/h · Ducted1.8084%9.516.0CEE 25CEE 26XcelES CC3218724437

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Kerr Kapstone includes these brand names as listed in AHRI: Kerr Kapstone. Standards are checked against published thresholds; program rules beyond ratings are not checked.