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KeplerX heat pump efficiency: 20 outdoor models compared

KeplerX has 20 heat pump outdoor models certified with this refrigerant group, in 20 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 KeplerX makes. KeplerX 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
20
AHRI certifications
20
Efficiency index
42%
Typical model vs same-size, same-type peers (20 models)
Meet CEE 2025
35%
7 models

How KeplerX 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.
KeplerX against every ranked manufacturerPeer scores, 0–100 · grey ticks: each ranked manufacturer · shaded: the middle half of KeplerX’s own modelsKeplerX is strongest on SEER2 (its typical model beats 58% of comparable models) and weakest on EER2 (26%).
  • KeplerX
  • Middle half of its models
  • Other ranked manufacturers
KeplerX

Source: AHRI Directory, NEEP · as of

Average peer percentile of KeplerX’s models
RatingBeats comparable modelsRankRaw median
Efficiency index20 models scored42%Not ranked—
COP at 5°F20 models scored34%Not ranked1.80
Capacity retention at 5°F20 models scored41%Not ranked60%
HSPF220 models scored52%Not ranked8.5
SEER220 models scored58%Not ranked17.4
EER220 models scored26%Not ranked10.5
Heating capacity at 5°F20 models scored46%Not ranked23,200 Btu/h

Standards met

Share of KeplerX’s models with at least one qualifying certification
StandardShareModels
CEE 2025 Tier 1 (Split ASHP)35%7
CEE 2026 Tier 1 (Split ASHP)35%7
CEE Advanced Tier (Split ASHP)0%0
Xcel Energy Colorado cold-climate ASHP (2025)25%5
DOE Cold Climate Heat Pump Challenge0%0
ENERGY STAR Cold Climate0%0

Sizes and duct types offered

Models per peer group, and how they score against the other models of that group.
KeplerX’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
  • KeplerX (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 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 tons234%37%27%47%
Ducted, 2 tons450%38%49%58%
Ducted, 2.5–3 tons639%29%50%56%
Ducted, 3.5–4.5 tons843%34%61%63%

Every KeplerX model in the market

KeplerX’s 20 models with a known size and duct type, over the shape of the whole catalog.
KeplerX models by size and ratingColoured: KeplerX · grey shapes: all 14,508 models · lines: catalog medians by size
  • KeplerX models
  • Ducted median by size
  • Non-ducted median by size
  • Every model at each size (width = count)
  • Standard threshold

Dots: 20 keplerx 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 KeplerX 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 KeplerX 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
1K18HVH24WD2RKeplerX2 tons24,000 Btu/h · Ducted103%1.949.525,80019.0CEE 25CEE 26Xcel1217894015Ducted, 2 tons70.4
2K20HVH24WD2VN3KeplerXwith ducted air handler K20HVH24WD2HN32 tons24,000 Btu/h · Ducted88%2.308.521,00019.7CEE 25CEE 26Xcel1218043800Ducted, 2 tons68.6
3K18HVH48WD2RKeplerX4 tons48,000 Btu/h · Ducted93%1.809.044,50019.0CEE 25CEE 26Xcel1217894017Ducted, 3.5–4.5 tons60.3
4K18HVH60WD2RKeplerX4.5 tons55,000 Btu/h · Ducted81%1.829.046,00018.5CEE 25CEE 26Xcel1217894018Ducted, 3.5–4.5 tons56.9
5K18HVH36WD2RKeplerX3 tons34,200 Btu/h · Ducted71%1.868.224,40018.5Xcel1217894016Ducted, 2.5–3 tons43.5

All-around best

Top 5 KeplerX 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
1K20HVH24WD2VN3KeplerXwith ducted air handler K20HVH24WD2HN32 tons24,000 Btu/h · Ducted88%2.308.519.712.5CEE 25CEE 26Xcel1218043800Ducted, 2 tons76.968.685.168.6
2K18HVH24WD2RKeplerX2 tons24,000 Btu/h · Ducted103%1.949.519.012.2CEE 25CEE 26Xcel1217894015Ducted, 2 tons73.570.476.670.4
3K18HVH48WD2RKeplerX4 tons48,000 Btu/h · Ducted93%1.809.019.011.2CEE 25CEE 26Xcel1217894017Ducted, 3.5–4.5 tons65.560.370.860.3
4K18HVH60WD2RKeplerX4.5 tons55,000 Btu/h · Ducted81%1.829.018.510.6CEE 25CEE 26Xcel1217894018Ducted, 3.5–4.5 tons57.956.958.956.9
5K20HVH36WD2VN3KeplerXwith ducted air handler K20HVH36WD2HN33 tons36,000 Btu/h · Ducted64%2.008.119.311.0CEE 25CEE 261218043801Ducted, 2.5–3 tons54.148.060.3Not a pick

Best model on each rating

KeplerX’s model with the highest peer percentile on each rating, ranked by that one rating only
RatingModelValueCompared withBeatsAHRI ref.
COP at 5°FK20HVH48WD2VN32.35Ducted, 3.5–4.5 tons90%218043802
Capacity retention at 5°FK18HVH24WD2R103%Ducted, 2 tons97%217894015
HSPF2K18HVH48WD2R9.0Ducted, 3.5–4.5 tons69%217894017
SEER2K20HVH36WD2VN319.3Ducted, 2.5–3 tons86%218043801
EER2K20HVH24WD2VN312.5Ducted, 2 tons81%218043800
Heating capacity at 5°FK18HVH24WD2R25,800 Btu/hDucted, 2 tons97%217894015

All 20 KeplerX models in Explore

KeplerX 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.
KeplerX: 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 tonsNone on this board (0 of 2 models qualify)38.9(50 is the typical model of its size class)K18HVH18WD2UN3with ducted air handler K18HVH18WD2HN32 of 2 models have all five ratings · AHRI 217894009
Ducted, 2 tons70.4(50 is the typical model of its size class)K18HVH24WD2R2 of 4 models qualify · AHRI 21789401576.9(50 is the typical model of its size class)K20HVH24WD2VN3with ducted air handler K20HVH24WD2HN34 of 4 models have all five ratings · AHRI 218043800
Ducted, 2.5–3 tons43.5(50 is the typical model of its size class)K18HVH36WD2R1 of 6 models qualify · AHRI 21789401654.1(50 is the typical model of its size class)K20HVH36WD2VN3with ducted air handler K20HVH36WD2HN36 of 6 models have all five ratings · AHRI 218043801
Ducted, 3.5–4.5 tons60.3(50 is the typical model of its size class)K18HVH48WD2R2 of 8 models qualify · AHRI 21789401765.5(50 is the typical model of its size class)K18HVH48WD2R8 of 8 models have all five ratings · AHRI 217894017

All-around board, every manufacturer

Newest KeplerX certifications

By AHRI reference number; AHRI issues references in increasing order.
The 5 most recently certified KeplerX outdoor models
Outdoor modelSize · typeCOP@5°FCap. 5/47HSPF2SEER2MeetsCombosAHRI ref.
K20HVH60WD2VN3KeplerXwith ducted air handler K20HVH60WD2HN34.5 tons54,000 Btu/h · Ducted2.3056%8.017.7None1218043803
K20HVH48WD2VN3KeplerXwith ducted air handler K20HVH48WD2HN34 tons48,000 Btu/h · Ducted2.3560%8.118.5None1218043802
K20HVH36WD2VN3KeplerXwith ducted air handler K20HVH36WD2HN33 tons36,000 Btu/h · Ducted2.0064%8.119.3CEE 25CEE 261218043801
K20HVH24WD2VN3KeplerXwith ducted air handler K20HVH24WD2HN32 tons24,000 Btu/h · Ducted2.3088%8.519.7CEE 25CEE 26Xcel1218043800
K15HVH60WD2VN3KeplerXwith ducted air handler K15HVH60WD2HN34.5 tons52,500 Btu/h · Ducted1.7256%8.515.0None1218043793

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