Custom Comfort heat pump efficiency: 20 outdoor models compared

Custom Comfort has 20 heat pump outdoor models certified with this refrigerant group, in 69 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.

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ManufacturerData as of Oct 11, 2026updated Oct 11, 2026 · sources

Outdoor models: 20
AHRI certifications: 69
Efficiency index: 65%; Typical model vs same-size, same-type peers (32 models)
Meet CEE 2025: 75%; 15 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 (50%).

Custom Comfort
Middle half of its models
Other ranked manufacturers

Source: AHRI Directory, NEEP · as of Oct 11, 2026

Average peer percentile of Custom Comfort’s models
Rating	Beats comparable models	Rank	Raw median
Efficiency index32 models scored	65%	Not ranked	—
COP at 5°F32 models scored	50%	Not ranked	1.98
Capacity retention at 5°F32 models scored	83%	Not ranked	89%
HSPF232 models scored	84%	Not ranked	9.9
SEER232 models scored	65%	Not ranked	18.6
EER232 models scored	51%	Not ranked	11.7
Heating capacity at 5°F32 models scored	80%	Not ranked	29,900 Btu/h

Standards met

Share of Custom Comfort’s models with at least one qualifying certification
Standard	Share	Models
CEE 2025 Tier 1 (Split ASHP)	75%	15
CEE 2026 Tier 1 (Split ASHP)	75%	15
CEE Advanced Tier (Split ASHP)	5%	1
Xcel Energy Colorado cold-climate ASHP (2025)	85%	17
DOE Cold Climate Heat Pump Challenge	5%	1
ENERGY STAR Cold Climate	100%	20

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

Source: AHRI Directory · as of Oct 11, 2026

Share of comparable models beaten, per peer group
Size and duct type	Models	Index	COP@5°F	HSPF2	SEER2
Ducted, up to 1.5 tons	5	63%	42%	69%	67%
Ducted, 2 tons	2	67%	50%	88%	72%
Ducted, 2.5–3 tons	5	63%	47%	93%	63%
Ducted, 3.5–4.5 tons	6	60%	50%	87%	65%
Non-ducted, up to 1.5 tons	5	75%	57%	86%	75%
Non-ducted, 2 tons	1	84%	91%	96%	81%
Non-ducted, 2.5–3 tons	4	69%	47%	86%	60%
Non-ducted, 3.5–4.5 tons	4	54%	47%	74%	47%

Every Custom Comfort model in the market

Custom Comfort’s 32 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 11,475 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: 32 custom comfort models, each through its representative certification, in the colour of the rating shown. The grey shapes count all 11,475 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, size	Models	10th pct.	25th	Median	75th	90th
Ducted, 0.5 tons	175	1.70	1.85	1.90	2.10	2.26
Ducted, 1 ton	340	1.85	1.90	2.00	2.40	2.65
Ducted, 1.5 tons	789	1.75	1.85	2.00	2.20	2.55
Ducted, 2 tons	782	1.73	1.80	2.00	2.10	2.33
Ducted, 2.5 tons	735	1.71	1.80	1.90	2.09	2.48
Ducted, 3 tons	652	1.68	1.70	1.90	2.06	2.36
Ducted, 3.5 tons	641	1.61	1.80	1.95	2.20	2.50
Ducted, 4 tons	367	1.70	1.80	1.91	2.02	2.52
Ducted, 4.5 tons	544	1.70	1.80	1.91	2.08	2.34
Ducted, 5 tons	25	1.80	1.80	1.90	1.90	2.15
Non-ducted, 0.5 tons	717	1.75	1.81	1.97	2.10	2.19
Non-ducted, 1 ton	1,064	1.75	1.80	1.90	2.07	2.25
Non-ducted, 1.5 tons	886	1.80	1.80	1.87	2.07	2.21
Non-ducted, 2 tons	564	1.80	1.80	1.83	2.04	2.21
Non-ducted, 2.5 tons	275	1.80	1.81	1.84	1.86	2.03
Non-ducted, 3 tons	502	1.80	1.80	1.90	2.00	2.09
Non-ducted, 3.5 tons	70	1.82	1.83	1.90	2.00	2.28
Non-ducted, 4 tons	263	1.80	1.80	1.98	2.00	2.10
Non-ducted, 4.5 tons	103	1.77	1.77	1.80	1.97	2.02
Non-ducted, 5 tons	29	1.98	2.00	2.10	2.30	2.47

Source: AHRI Directory · as of Oct 11, 2026

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 model	Size · type	Cap. 5/47	COP@5°F	HSPF2	Btu/h @5°F	SEER2	Meets	Combos	AHRI ref.	Compared with	Score
1CCOXHASZ06HPCustom Comfort · CCO Serieswith ductless indoor unit CCOXHAWM06	0.5 tons6,000 Btu/h · Non-ducted	107%	2.09	13.6	7,500	26.5	CEE 25CEE 26XcelES CC	2	212365403	Non-ducted, up to 1.5 tons	89.3
2CCOXHASZ48CHPCustom Comfort · CCO Serieswith ducted air handler CCOXHASD48	4 tons48,000 Btu/h · Ducted	88%	2.02	10.3	46,000	14.3	None	4	212365420	Ducted, 3.5–4.5 tons	86.4
3CCOXHASZ24HPCustom Comfort · CCO Serieswith ductless indoor unit CCOXHA4C24	2 tons24,000 Btu/h · Non-ducted	103%	2.00	11.5	25,800	20.5	CEE 25CEE 26CEE AdvXcelDOEES CC	5	212365412	Non-ducted, 2 tons	86.1
4CCOXHAMZ327HPCustom Comfort · CCO Series	2.5 tons27,000 Btu/h · Non-ducted	103%	1.92	10.0	27,800	21.8	CEE 25CEE 26XcelES CC	3	212631690	Non-ducted, 2.5–3 tons	83.1
5CCOXHASZ60CHPCustom Comfort · CCO Serieswith ducted air handler CCOXHASD60	4.5 tons55,000 Btu/h · Ducted	93%	1.97	9.5	53,000	15.8	ES CC	3	212365421	Ducted, 3.5–4.5 tons	82.0

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 model	Size · type	Cap. 5/47	COP@5°F	HSPF2	SEER2	EER2	Meets	Combos	AHRI ref.	Compared with	Score	Heating half	Cooling half	Cold-climate score
1CCOXHASZ06HPCustom Comfort · CCO Serieswith ductless indoor unit CCOXHAWM06	0.5 tons6,000 Btu/h · Non-ducted	107%	2.09	13.6	26.5	15.8	CEE 25CEE 26XcelES CC	2	212365403	Non-ducted, up to 1.5 tons	92.0	89.3	94.7	89.3
2CCOXHASZ09HPCustom Comfort · CCO Serieswith ductless indoor unit CCOXHAWM09	1 ton9,000 Btu/h · Non-ducted	88%	1.97	11.5	28.1	16.2	CEE 25CEE 26XcelES CC	4	212365404	Non-ducted, up to 1.5 tons	87.0	76.2	97.9	76.2
3CCOXHASZ09HPCustom Comfort · CCO Serieswith ducted air handler CCOXHASD09	1 ton9,000 Btu/h · Ducted	108%	1.90	12.0	20.2	13.2	CEE 25CEE 26XcelES CC	4	212365415	Ducted, up to 1.5 tons	85.2	74.9	95.5	74.9
4CCOXHASZ24HPCustom Comfort · CCO Serieswith ductless indoor unit CCOXHAWM24	2 tons24,000 Btu/h · Non-ducted	86%	2.21	11.4	21.5	13.0	CEE 25CEE 26CEE AdvXcelDOEES CC	5	212365407	Non-ducted, 2 tons	84.3	84.5	84.1	86.1
5CCOXHAMZ436HPCustom Comfort · CCO Series	3 tons36,000 Btu/h · Non-ducted	97%	1.90	10.3	22.2	13.6	CEE 25CEE 26XcelES CC	3	212365436	Non-ducted, 2.5–3 tons	82.8	79.3	86.4	79.3

Best model on each rating

Custom Comfort’s model with the highest peer percentile on each rating, ranked by that one rating only
Rating	Model	Value	Compared with	Beats	AHRI ref.
COP at 5°F	CCOXHASZ24HP	2.21	Non-ducted, 2 tons	91%	212365407
Capacity retention at 5°F	CCOXHAMZ327HP	103%	Non-ducted, 2.5–3 tons	97%	212631690
HSPF2	CCOXHASZ48CHP	10.3	Ducted, 3.5–4.5 tons	99%	212365420
SEER2	CCOXHAMZ548HP	20.9	Ducted, 3.5–4.5 tons	99%	212365440
EER2	CCOXHASZ09HP	16.2	Non-ducted, up to 1.5 tons	98%	212365404
Heating capacity at 5°F	CCOXHASZ60CHP	57,600 Btu/h	Ducted, 3.5–4.5 tons	100%	212365449

All 20 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 type	Cold-climate pickCold-climate score, best model	All-around bestAll-around score, best model
Ducted, up to 1.5 tons	74.9(50 is the typical model of its size class)CCOXHASZ09HPwith ducted air handler CCOXHASD095 of 5 models qualify · AHRI 212365415	85.2(50 is the typical model of its size class)CCOXHASZ09HPwith ducted air handler CCOXHASD095 of 5 models have all five ratings · AHRI 212365415
Ducted, 2 tons	79.4(50 is the typical model of its size class)CCOXHASZ24HPwith ducted air handler CCOXHASD242 of 2 models qualify · AHRI 212365418	80.1(50 is the typical model of its size class)CCOXHASZ24HPwith ducted air handler CCOXHASD242 of 2 models have all five ratings · AHRI 212365418
Ducted, 2.5–3 tons	80.4(50 is the typical model of its size class)CCOXHAMZ327HP5 of 5 models qualify · AHRI 212631691	81.9(50 is the typical model of its size class)CCOXHAMZ327HP5 of 5 models have all five ratings · AHRI 212631691
Ducted, 3.5–4.5 tons	86.4(50 is the typical model of its size class)CCOXHASZ48CHPwith ducted air handler CCOXHASD486 of 6 models qualify · AHRI 212365420	82.0(50 is the typical model of its size class)CCOXHAMZ548HP6 of 6 models have all five ratings · AHRI 212365440
Non-ducted, up to 1.5 tons	89.3(50 is the typical model of its size class)CCOXHASZ06HPwith ductless indoor unit CCOXHAWM065 of 5 models qualify · AHRI 212365403	92.0(50 is the typical model of its size class)CCOXHASZ06HPwith ductless indoor unit CCOXHAWM065 of 5 models have all five ratings · AHRI 212365403
Non-ducted, 2 tons	86.1(50 is the typical model of its size class)CCOXHASZ24HPwith ductless indoor unit CCOXHA4C241 of 1 models qualify · AHRI 212365412	84.3(50 is the typical model of its size class)CCOXHASZ24HPwith ductless indoor unit CCOXHAWM241 of 1 models have all five ratings · AHRI 212365407
Non-ducted, 2.5–3 tons	83.1(50 is the typical model of its size class)CCOXHAMZ327HP4 of 4 models qualify · AHRI 212631690	82.8(50 is the typical model of its size class)CCOXHAMZ436HP4 of 4 models have all five ratings · AHRI 212365436
Non-ducted, 3.5–4.5 tons	76.8(50 is the typical model of its size class)CCOXHASZ60CHPwith ductless indoor unit CCOXHAFC604 of 4 models qualify · AHRI 212365428	77.9(50 is the typical model of its size class)CCOXHAMZ548HP4 of 4 models have all five ratings · AHRI 212365439

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 model	Size · type	COP@5°F	Cap. 5/47	HSPF2	SEER2	Meets	Combos	AHRI ref.
CCOXHA24V60HPCustom Comfort · CCOACC serieswith ducted air handler CCOACC60D	4.5 tons53,000 Btu/h · Ducted	1.80	85%	8.6	14.5	ES CC	3	214391158
CCOXHA24V36HPCustom Comfort · CCOX serieswith ducted air handler CCOACC3036B	3 tons35,000 Btu/h · Ducted	1.85	83%	8.6	15.5	CEE 25CEE 26XcelES CC	4	213785773
CCOXHA24V30HPCustom Comfort · CCOX serieswith ducted air handler CCOACC3036B	2.5 tons29,000 Btu/h · Ducted	1.80	73%	8.5	15.2	CEE 25CEE 26XcelES CC	4	213785772
CCOXHA24V24HPCustom Comfort · CCOX serieswith ducted air handler CCOACC24A	2 tons24,000 Btu/h · Ducted	2.00	80%	9.8	16.1	CEE 25CEE 26XcelES CC	4	213785771
CCOXHAMZ327HPCustom Comfort · CCO Series	2.5 tons27,000 Btu/h · Ducted and non-ducted and mixed (multi-zone)	1.90	101%	10.0	20.4	CEE 25CEE 26XcelES CC	3	212631692

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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.