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Custom Comfort heat pump efficiency: 28 outdoor models compared

Custom Comfort has 28 heat pump outdoor models certified with this refrigerant group, in 103 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 Custom Comfort makes. Custom Comfort 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
28
AHRI certifications
103
Efficiency index
71%
Typical model vs same-size, same-type peers (49 models)
Meet CEE 2025
96.4%
27 models

How Custom Comfort 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.
Custom Comfort against every ranked manufacturerPeer scores, 0–100 · grey ticks: each ranked manufacturer · shaded: the middle half of Custom Comfort’s own modelsCustom Comfort is strongest on HSPF2 (its typical model beats 84% of comparable models) and weakest on COP at 5°F (64%).
  • Custom Comfort
  • Middle half of its models
  • Other ranked manufacturers
Custom C…

Source: AHRI Directory, NEEP · as of

Average peer percentile of Custom Comfort’s models
RatingBeats comparable modelsRankRaw median
Efficiency index49 models scored71%Not ranked—
COP at 5°F49 models scored64%Not ranked2.00
Capacity retention at 5°F49 models scored71%Not ranked91%
HSPF249 models scored84%Not ranked10.6
SEER249 models scored69%Not ranked20.8
EER249 models scored67%Not ranked12.3
Heating capacity at 5°F49 models scored72%Not ranked22,900 Btu/h

Standards met

Share of Custom Comfort’s models with at least one qualifying certification
StandardShareModels
CEE 2025 Tier 1 (Split ASHP)96.4%27
CEE 2026 Tier 1 (Split ASHP)96.4%27
CEE Advanced Tier (Split ASHP)3.6%1
Xcel Energy Colorado cold-climate ASHP (2025)100%28
DOE Cold Climate Heat Pump Challenge3.6%1
ENERGY STAR Cold Climate100%28

Sizes and duct types offered

Models per peer group, and how they score against the other models of that group.
Custom Comfort’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
  • Custom Comfort (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 modelsNon-ducted, 2 tons2.00863 modelsNon-ducted, 2.5–3 tons2.001,106 modelsNon-ducted, 3.5–4.5 tons2.00564 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 tons1078%77%86%77%
Ducted, 2 tons471%61%84%78%
Ducted, 2.5–3 tons772%54%87%71%
Ducted, 3.5–4.5 tons664%53%85%67%
Non-ducted, up to 1.5 tons1075%77%85%74%
Non-ducted, 2 tons282%96%96%65%
Non-ducted, 2.5–3 tons665%54%70%65%
Non-ducted, 3.5–4.5 tons451%33%85%38%

Every Custom Comfort model in the market

Custom Comfort’s 49 models with a known size and duct type, over the shape of the whole catalog.
Custom Comfort models by size and ratingColoured: Custom Comfort · grey shapes: all 14,508 models · lines: catalog medians by size
  • Custom Comfort models
  • Ducted median by size
  • Non-ducted median by size
  • Every model at each size (width = count)
  • Standard threshold

Dots: 49 custom comfort 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 Custom Comfort 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 Custom Comfort 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
1CCOXHBSZ06HPCustom Comfort · COOX Serieswith ductless indoor unit CCOXHBWM060.5 tons6,000 Btu/h · Non-ducted110%2.4014.87,70025.5CEE 25CEE 26CEE AdvXcelDOEES CC3215745973Non-ducted, up to 1.5 tons96.7
2CCOXHBSZ06HPCustom Comfort · COOX Serieswith ducted air handler CCOXHBSD060.5 tons6,500 Btu/h · Ducted98%2.4113.87,80021.4CEE 25CEE 26XcelES CC3215745983Ducted, up to 1.5 tons93.5
3CCOESBSZ09HPCustom Comfort · CCO Serieswith ductless indoor unit CCOXHBFM091 ton9,000 Btu/h · Non-ducted96%2.2713.98,60026.0CEE 25CEE 26XcelES CC5218425833Non-ducted, up to 1.5 tons89.5
4CCOXHBSZ24HPCustom Comfort · COOX Serieswith ductless indoor unit CCOXHB4C242 tons23,400 Btu/h · Non-ducted95%2.2311.623,80020.7CEE 25CEE 26XcelES CC5215745982Non-ducted, 2 tons89.4
5CCOXHBSZ36CHPCustom Comfort · COOX Serieswith ductless indoor unit CCOXHBFC363 tons36,400 Btu/h · Non-ducted104%2.0210.839,50020.0CEE 25CEE 26XcelES CC4215746002Non-ducted, 2.5–3 tons89.4

All-around best

Top 5 Custom Comfort 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
1CCOXHBSZ06HPCustom Comfort · COOX Serieswith ductless indoor unit CCOXHBWM060.5 tons6,000 Btu/h · Non-ducted110%2.4014.825.518.0CEE 25CEE 26CEE AdvXcelDOEES CC3215745973Non-ducted, up to 1.5 tons96.296.795.796.7
2CCOXHBSZ06HPCustom Comfort · COOX Serieswith ducted air handler CCOXHBSD060.5 tons6,500 Btu/h · Ducted98%2.4113.821.414.4CEE 25CEE 26XcelES CC3215745983Ducted, up to 1.5 tons95.093.596.593.5
3CCOESBSZ09HPCustom Comfort · CCO Serieswith ductless indoor unit CCOXHBFM091 ton9,000 Btu/h · Non-ducted96%2.2713.926.016.2CEE 25CEE 26XcelES CC5218425833Non-ducted, up to 1.5 tons92.689.595.789.5
4CCOESBSZ24HPCustom Comfort · CCO Serieswith ductless indoor unit CCOXHBWM242 tons24,000 Btu/h · Non-ducted78%2.5411.723.014.0CEE 25CEE 26XcelES CC5217968402Non-ducted, 2 tons86.884.589.184.5
5CCOXHBSZ09HPCustom Comfort · COOX Serieswith ducted air handler CCOXHBSD091 ton9,000 Btu/h · Ducted120%1.8513.820.514.0CEE 25CEE 26XcelES CC5215745984Ducted, up to 1.5 tons86.579.993.279.9

Best model on each rating

Custom Comfort’s model with the highest peer percentile on each rating, ranked by that one rating only
RatingModelValueCompared withBeatsAHRI ref.
COP at 5°FCCOESBSZ12HP2.51Non-ducted, up to 1.5 tons99%218425834
Capacity retention at 5°FCCOXHBSZ09HP126%Non-ducted, up to 1.5 tons98%215745988
HSPF2CCOXHBSZ06HP14.8Non-ducted, up to 1.5 tons99%215745973
SEER2CCOESBMZ427HP25.0Non-ducted, 2.5–3 tons97%217968406
EER2CCOXHBSZ06HP18.0Non-ducted, up to 1.5 tons99%215745973
Heating capacity at 5°FCCOXHBSZ36CHP39,500 Btu/hNon-ducted, 2.5–3 tons98%215746002

All 28 Custom Comfort models in Explore

Custom Comfort 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.
Custom Comfort: 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 tons93.5(50 is the typical model of its size class)CCOXHBSZ06HPwith ducted air handler CCOXHBSD0610 of 10 models qualify · AHRI 21574598395.0(50 is the typical model of its size class)CCOXHBSZ06HPwith ducted air handler CCOXHBSD0610 of 10 models have all five ratings · AHRI 215745983
Ducted, 2 tons85.7(50 is the typical model of its size class)CCOXHBSZ24HPwith ducted air handler CCOXHBSD244 of 4 models qualify · AHRI 21574598778.8(50 is the typical model of its size class)CCOESBSZ24HPwith ducted air handler CCOXHBSD244 of 4 models have all five ratings · AHRI 218425832
Ducted, 2.5–3 tons83.2(50 is the typical model of its size class)CCOXHBSZ36CHPwith ducted air handler CCOXHBSD367 of 7 models qualify · AHRI 21574599983.6(50 is the typical model of its size class)CCOXHBMZ536HP7 of 7 models have all five ratings · AHRI 215746012
Ducted, 3.5–4.5 tons82.7(50 is the typical model of its size class)CCOXHBMZ648HP6 of 6 models qualify · AHRI 21574601583.9(50 is the typical model of its size class)CCOXHBMZ648HP6 of 6 models have all five ratings · AHRI 215746015
Non-ducted, up to 1.5 tons96.7(50 is the typical model of its size class)CCOXHBSZ06HPwith ductless indoor unit CCOXHBWM0610 of 10 models qualify · AHRI 21574597396.2(50 is the typical model of its size class)CCOXHBSZ06HPwith ductless indoor unit CCOXHBWM0610 of 10 models have all five ratings · AHRI 215745973
Non-ducted, 2 tons89.4(50 is the typical model of its size class)CCOXHBSZ24HPwith ductless indoor unit CCOXHB4C242 of 2 models qualify · AHRI 21574598286.8(50 is the typical model of its size class)CCOESBSZ24HPwith ductless indoor unit CCOXHBWM242 of 2 models have all five ratings · AHRI 217968402
Non-ducted, 2.5–3 tons89.4(50 is the typical model of its size class)CCOXHBSZ36CHPwith ductless indoor unit CCOXHBFC366 of 6 models qualify · AHRI 21574600278.3(50 is the typical model of its size class)CCOXHBMZ536HP6 of 6 models have all five ratings · AHRI 215746011
Non-ducted, 3.5–4.5 tons73.4(50 is the typical model of its size class)CCOXHBMZ648HP4 of 4 models qualify · AHRI 21574601675.6(50 is the typical model of its size class)CCOXHBMZ648HP4 of 4 models have all five ratings · AHRI 215746014

All-around board, every manufacturer

Newest Custom Comfort certifications

By AHRI reference number; AHRI issues references in increasing order.
The 5 most recently certified Custom Comfort outdoor models
Outdoor modelSize · typeCOP@5°FCap. 5/47HSPF2SEER2MeetsCombosAHRI ref.
CCOESBSZ24HPCustom Comfort · CCO Serieswith ducted air handler CCOXHBAHU242 tons24,000 Btu/h · Ducted and non-ducted2.2072%9.019.7CEE 25CEE 26XcelES CC5218425842
CCOESBSZ17HPCustom Comfort · CCO Serieswith ducted air handler CCOXHBAHU181.5 tons18,000 Btu/h · Ducted and non-ducted2.3072%9.818.5CEE 25CEE 26XcelES CC7218425841
CCOESBSZ12HPCustom Comfort · CCO Serieswith ductless indoor unit CCOXHB1C121 ton12,000 Btu/h · Ducted and non-ducted2.4772%10.022.1CEE 25CEE 26XcelES CC5218425839
CCOESBSZ09HPCustom Comfort · CCO Serieswith ductless indoor unit CCOXHB1C091 ton9,000 Btu/h · Ducted and non-ducted2.1773%11.822.1CEE 25CEE 26XcelES CC5218425838
CCOESBMZ536HPCustom Comfort · CCO Series3 tons35,400 Btu/h · Ducted and non-ducted and mixed (multi-zone)2.0070%9.422.0CEE 25CEE 26XcelES CC3217968411

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