Kepler heat pump efficiency: 51 outdoor models compared

Kepler has 51 heat pump outdoor models certified with this refrigerant group, in 145 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 Kepler makes. Kepler 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 Oct 11, 2026updated Oct 11, 2026 · sources

Outdoor models: 51
AHRI certifications: 145
Efficiency index: 60%; Typical model vs same-size, same-type peers (71 models)
Meet CEE 2025: 70.6%; 36 models

How Kepler 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.

Kepler against every ranked manufacturerPeer scores, 0–100 · grey ticks: each ranked manufacturer · shaded: the middle half of Kepler’s own modelsKepler is strongest on HSPF2 (its typical model beats 70% of comparable models) and weakest on COP at 5°F (50%).

Kepler
Middle half of its models
Other ranked manufacturers

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

Average peer percentile of Kepler’s models
Rating	Beats comparable models	Rank	Raw median
Efficiency index71 models scored	60%	Not ranked	—
COP at 5°F71 models scored	50%	Not ranked	1.91
Capacity retention at 5°F71 models scored	59%	Not ranked	78%
HSPF271 models scored	70%	Not ranked	9.5
SEER271 models scored	66%	Not ranked	19.5
EER271 models scored	53%	Not ranked	11.7
Heating capacity at 5°F71 models scored	59%	Not ranked	20,200 Btu/h

Standards met

Share of Kepler’s models with at least one qualifying certification
Standard	Share	Models
CEE 2025 Tier 1 (Split ASHP)	70.6%	36
CEE 2026 Tier 1 (Split ASHP)	66.7%	34
CEE Advanced Tier (Split ASHP)	0%	0
Xcel Energy Colorado cold-climate ASHP (2025)	56.9%	29
DOE Cold Climate Heat Pump Challenge	0%	0
ENERGY STAR Cold Climate	58.8%	30

Sizes and duct types offered

Models per peer group, and how they score against the other models of that group.

Kepler’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

Kepler (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	11	61%	52%	72%	66%
Ducted, 2 tons	4	66%	64%	90%	67%
Ducted, 2.5–3 tons	15	53%	42%	70%	55%
Ducted, 3.5–4.5 tons	10	55%	34%	80%	67%
Non-ducted, up to 1.5 tons	15	62%	65%	68%	66%
Non-ducted, 2 tons	3	63%	67%	69%	66%
Non-ducted, 2.5–3 tons	9	67%	54%	67%	71%
Non-ducted, 3.5–4.5 tons	4	57%	31%	38%	83%

Every Kepler model in the market

Kepler’s 71 models with a known size and duct type, over the shape of the whole catalog.

Kepler models by size and ratingColoured: Kepler · grey shapes: all 11,475 models · lines: catalog medians by size

Kepler models
Ducted median by size
Non-ducted median by size
Every model at each size (width = count)
Standard threshold

Dots: 71 kepler 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 Kepler 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 Kepler 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
1ODUM4OX630-36HFN1-M1XKepler · IDU Series	3 tons36,000 Btu/h · Non-ducted	103%	2.00	10.9	37,000	22.4	CEE 25CEE 26XcelES CC	3	214377785	Non-ducted, 2.5–3 tons	90.9
2ODUMOX230-09HFN1MW5WKepler · IDU Serieswith ductless indoor unit IDUMSEPB-06HRFN1MY5W	0.5 tons6,000 Btu/h · Non-ducted	107%	2.09	13.6	7,500	26.5	CEE 25CEE 26XcelES CC	4	213608172	Non-ducted, up to 1.5 tons	89.3
3ODUMOD30-24HFN1MU0WKepler · IDU Serieswith ductless indoor unit IDUMCD1-24HRFN1-MT0W(GA)	2 tons24,000 Btu/h · Non-ducted	103%	2.00	11.5	25,800	20.5	CEE 25CEE 26XcelES CC	3	214377774	Non-ducted, 2 tons	86.1
4ODUM3OK-27HFN1-MKepler · IDU Series	2.5 tons27,000 Btu/h · Non-ducted	103%	1.92	10.0	27,800	21.8	CEE 25CEE 26XcelES CC	3	214377779	Non-ducted, 2.5–3 tons	83.1
5ODUM3OK-27HFN1-MKepler · IDU Series	2.5 tons27,000 Btu/h · Ducted	101%	1.90	10.0	27,200	19.0	CEE 25CEE 26XcelES CC	3	214377780	Ducted, 2.5–3 tons	80.4

All-around best

Top 5 Kepler 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
1ODUMOX230-09HFN1MW5WKepler · IDU Serieswith ductless indoor unit IDUMSEPB-06HRFN1MY5W	0.5 tons6,000 Btu/h · Non-ducted	107%	2.09	13.6	26.5	15.8	CEE 25CEE 26XcelES CC	4	213608172	Non-ducted, up to 1.5 tons	92.0	89.3	94.6	89.3
2ODUMOX330-09HFN1MY5WKepler · IDU Serieswith ductless indoor unit IDUMSEPB-09HRFN1MY5W(GA)	1 ton9,000 Btu/h · Non-ducted	88%	1.97	11.5	28.1	16.2	CEE 25CEE 26XcelES CC	3	213608173	Non-ducted, up to 1.5 tons	87.0	76.2	97.9	76.2
3ODUM4OX630-36HFN1-M1XKepler · IDU Series	3 tons36,000 Btu/h · Non-ducted	103%	2.00	10.9	22.4	12.5	CEE 25CEE 26XcelES CC	3	214377785	Non-ducted, 2.5–3 tons	86.4	90.9	81.8	90.9
4ODUMOX330-09HFN1MY5WKepler · IDU Serieswith ducted air handler IDUMTIU-09HWFN1-M	1 ton9,000 Btu/h · Ducted	108%	1.90	12.0	20.2	13.2	CEE 25CEE 26XcelES CC	3	214377767	Ducted, up to 1.5 tons	85.2	74.9	95.5	74.9
5ODUMOD30-24HFN1MU0WKepler · IDU Serieswith ductless indoor unit IDUMSEPD-24HRFN1MU0W	2 tons24,000 Btu/h · Non-ducted	86%	2.21	11.4	21.5	13.0	CEE 25CEE 26XcelES CC	3	213608176	Non-ducted, 2 tons	84.3	84.5	84.1	86.1

Best model on each rating

Kepler’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	ODUMOX230-12HFN1-MV5W	2.45	Non-ducted, up to 1.5 tons	98%	214610372
Capacity retention at 5°F	ODUM3OK-27HFN1-M	103%	Non-ducted, 2.5–3 tons	97%	214377779
HSPF2	ODUMOX230-09HFN1MW5W	13.6	Non-ducted, up to 1.5 tons	98%	213608172
SEER2	ODUM3OJ-27HFN1-M	24.6	Non-ducted, 2.5–3 tons	99%	217447458
EER2	ODUMOX330-09HFN1MY5W	16.2	Non-ducted, up to 1.5 tons	98%	213608173
Heating capacity at 5°F	ODUM2OI-18HFN1-M	20,000 Btu/h	Non-ducted, up to 1.5 tons	96%	214377776

All 51 Kepler models in Explore

Kepler 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.

Kepler: 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)ODUMOX330-09HFN1MY5Wwith ducted air handler IDUMTIU-09HWFN1-M8 of 10 models qualify · AHRI 214377767	85.2(50 is the typical model of its size class)ODUMOX330-09HFN1MY5Wwith ducted air handler IDUMTIU-09HWFN1-M10 of 10 models have all five ratings · AHRI 214377767
Ducted, 2 tons	80.3(50 is the typical model of its size class)ODUMOD33-24HFN1-MT0Wwith ducted air handler IDUMTIU-24HWFN1-M5 of 5 models qualify · AHRI 214610367	83.8(50 is the typical model of its size class)ODUMOD33-24HFN1-MT0Wwith ducted air handler IDUMTIU-24HWFN1-M5 of 5 models have all five ratings · AHRI 214610367
Ducted, 2.5–3 tons	80.4(50 is the typical model of its size class)ODUM3OK-27HFN1-M9 of 15 models qualify · AHRI 214377780	83.7(50 is the typical model of its size class)ODUM4OX630-36HFN1-M1X15 of 15 models have all five ratings · AHRI 214377786
Ducted, 3.5–4.5 tons	74.9(50 is the typical model of its size class)ODUM5OG-48HFN1-M-[X]6 of 10 models qualify · AHRI 214377789	82.0(50 is the typical model of its size class)ODUM5OG-48HFN1-M-[X]9 of 9 models have all five ratings · AHRI 214377789
Ducted, 5 tons and up	No models in this size class	42.8(50 is the typical model of its size class)AZPNS/60RODwith ducted air handler AZPN/60WAH1 of 1 models have all five ratings · AHRI 213062304
Non-ducted, up to 1.5 tons	89.3(50 is the typical model of its size class)ODUMOX230-09HFN1MW5Wwith ductless indoor unit IDUMSEPB-06HRFN1MY5W9 of 15 models qualify · AHRI 213608172	92.0(50 is the typical model of its size class)ODUMOX230-09HFN1MW5Wwith ductless indoor unit IDUMSEPB-06HRFN1MY5W15 of 15 models have all five ratings · AHRI 213608172
Non-ducted, 2 tons	86.1(50 is the typical model of its size class)ODUMOD30-24HFN1MU0Wwith ductless indoor unit IDUMCD1-24HRFN1-MT0W(GA)2 of 3 models qualify · AHRI 214377774	84.3(50 is the typical model of its size class)ODUMOD30-24HFN1MU0Wwith ductless indoor unit IDUMSEPD-24HRFN1MU0W3 of 3 models have all five ratings · AHRI 213608176
Non-ducted, 2.5–3 tons	90.9(50 is the typical model of its size class)ODUM4OX630-36HFN1-M1X5 of 9 models qualify · AHRI 214377785	86.4(50 is the typical model of its size class)ODUM4OX630-36HFN1-M1X9 of 9 models have all five ratings · AHRI 214377785
Non-ducted, 3.5–4.5 tons	76.2(50 is the typical model of its size class)ODUM5OG-48HFN1-M-[X]2 of 4 models qualify · AHRI 214377788	77.9(50 is the typical model of its size class)ODUM5OG-48HFN1-M-[X]4 of 4 models have all five ratings · AHRI 214377788

All-around board, every manufacturer

Newest Kepler certifications

By AHRI reference number; AHRI issues references in increasing order.

The 5 most recently certified Kepler outdoor models
Outdoor model	Size · type	COP@5°F	Cap. 5/47	HSPF2	SEER2	Meets	Combos	AHRI ref.
AZPNS/36RODKeplerwith ducted air handler AZPN/B36WACUID	3 tons35,000 Btu/h · Ducted	1.91	56%	7.7	14.6	None	5	218732705
AZPN/B36WACUIDKeplerwith ducted air handler AZPNS/36ROD	3 tons35,000 Btu/h · Ducted	1.91	56%	7.7	14.6	None	1	218620812
AZPN/45WDKeplerwith ducted air handler HE35948+TD	3.5 tons43,500 Btu/h · Ducted	1.76	96%	8.9	15.0	XcelES CC	3	218471534
AZPNS/24RODKeplerwith ducted air handler HE21(1,2)24+TXV+TD	2 tons23,000 Btu/h · Ducted	2.06	75%	9.1	15.2	CEE 25CEE 26XcelES CC	5	218451099
AZPN/B36WDUIDKeplerwith ducted air handler HE32936+TD	3 tons33,800 Btu/h · Ducted	1.74	82%	8.1	15.0	CEE 25CEE 26XcelES CC	6	218451098

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Compare Kepler

Manufacturers of a similar size, side by side.

Compare with any manufacturer

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