ECO AC heat pump efficiency: 49 outdoor models compared

ECO AC has 49 heat pump outdoor models certified with this refrigerant group, in 90 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 ECO AC makes. ECO AC 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: 49
AHRI certifications: 90
Efficiency index: 59%; Typical model vs same-size, same-type peers (68 models)
Meet CEE 2025: 85.7%; 42 models

How ECO AC 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.

ECO AC against every ranked manufacturerPeer scores, 0–100 · grey ticks: each ranked manufacturer · shaded: the middle half of ECO AC’s own modelsECO AC is strongest on SEER2 (its typical model beats 65% of comparable models) and weakest on COP at 5°F (47%).

ECO AC
Middle half of its models
Other ranked manufacturers

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

Average peer percentile of ECO AC’s models
Rating	Beats comparable models	Rank	Raw median
Efficiency index68 models scored	59%	Not ranked	—
COP at 5°F68 models scored	47%	Not ranked	1.90
Capacity retention at 5°F68 models scored	61%	Not ranked	80%
HSPF268 models scored	64%	Not ranked	9.5
SEER268 models scored	65%	Not ranked	20.5
EER268 models scored	57%	Not ranked	12.0
Heating capacity at 5°F68 models scored	59%	Not ranked	20,000 Btu/h

Standards met

Share of ECO AC’s models with at least one qualifying certification
Standard	Share	Models
CEE 2025 Tier 1 (Split ASHP)	85.7%	42
CEE 2026 Tier 1 (Split ASHP)	77.6%	38
CEE Advanced Tier (Split ASHP)	0%	0
Xcel Energy Colorado cold-climate ASHP (2025)	73.5%	36
DOE Cold Climate Heat Pump Challenge	0%	0
ENERGY STAR Cold Climate	73.5%	36

Sizes and duct types offered

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

ECO AC’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

ECO AC (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	9	62%	54%	64%	70%
Ducted, 2 tons	5	68%	47%	79%	71%
Ducted, 2.5–3 tons	10	57%	33%	68%	70%
Ducted, 3.5–4.5 tons	5	59%	46%	81%	66%
Non-ducted, up to 1.5 tons	22	57%	53%	56%	59%
Non-ducted, 2 tons	5	58%	45%	62%	66%
Non-ducted, 2.5–3 tons	10	59%	40%	60%	65%
Non-ducted, 3.5–4.5 tons	2	57%	66%	75%	48%

Every ECO AC model in the market

ECO AC’s 68 models with a known size and duct type, over the shape of the whole catalog.

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

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

Dots: 68 eco ac 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 ECO AC 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 ECO AC 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
1EMH-5O48BBHECO AC · EMH series	4 tons48,000 Btu/h · Non-ducted	92%	2.00	10.0	45,000	21.2	CEE 25CEE 26XcelES CC	3	213088006	Non-ducted, 3.5–4.5 tons	80.5
2EHH-O24BAECO AC · E-serieswith ducted air handler EHH-D24BAAlso listed as EHH-O24BB	2 tons23,000 Btu/h · Ducted	80%	2.30	11.2	20,000	19.0	CEE 25CEE 26XcelES CC	1	206902027	Ducted, 2 tons	80.3
3EHH-O9BBECO AC · E-serieswith ductless indoor unit EHH-W09BBAlso listed as EHH-O09BB	1 ton9,000 Btu/h · Non-ducted	80%	2.11	11.4	8,000	24.0	CEE 25CEE 26XcelES CC	2	207825490	Non-ducted, up to 1.5 tons	80.2
4EHP-O09KBAECO AC · Premium efficiency serieswith ductless indoor unit EHP-W09KBA	1 ton9,000 Btu/h · Non-ducted	144%	1.91	11.0	13,000	27.0	CEE 25CEE 26XcelES CC	1	215416013	Non-ducted, up to 1.5 tons	80.1
5EMH-3O24KBAECO AC · Multi Zone high efficiency series	2 tons23,200 Btu/h · Non-ducted	90%	2.10	10.0	21,600	21.0	CEE 25CEE 26XcelES CC	3	215420705	Non-ducted, 2 tons	76.1

All-around best

Top 5 ECO AC 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
1EHP-O09KBAECO AC · Premium efficiency serieswith ductless indoor unit EHP-W09KBA	1 ton9,000 Btu/h · Non-ducted	144%	1.91	11.0	27.0	16.6	CEE 25CEE 26XcelES CC	1	215416013	Non-ducted, up to 1.5 tons	88.7	80.1	97.3	80.1
2EHP-O09BBECO AC · EHP serieswith ductless indoor unit EHP-W09BB	1 ton9,000 Btu/h · Non-ducted	94%	1.90	11.6	26.4	15.8	CEE 25CEE 26XcelES CC	1	214232432	Non-ducted, up to 1.5 tons	84.4	74.8	94.1	74.8
3EHH-O24BAECO AC · E-serieswith ducted air handler EHH-D24BAAlso listed as EHH-O24BB	2 tons23,000 Btu/h · Ducted	80%	2.30	11.2	19.0	12.5	CEE 25CEE 26XcelES CC	1	206902027	Ducted, 2 tons	83.8	80.3	87.4	80.3
4EHH-O9BBECO AC · E-serieswith ductless indoor unit EHH-W09BBAlso listed as EHH-O09BB	1 ton9,000 Btu/h · Non-ducted	80%	2.11	11.4	24.0	14.0	CEE 25CEE 26XcelES CC	2	207825490	Non-ducted, up to 1.5 tons	83.0	80.2	85.7	80.2
5EMH-5O48BBHECO AC · EHS series	4 tons47,000 Btu/h · Ducted	87%	2.00	9.0	20.9	11.7	CEE 25CEE 26XcelES CC	3	213088007	Ducted, 3.5–4.5 tons	82.0	74.9	89.1	74.9

Best model on each rating

ECO AC’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	EHH-O18BB	2.38	Non-ducted, up to 1.5 tons	96%	207825492
Capacity retention at 5°F	EHP-O09KBA	144%	Non-ducted, up to 1.5 tons	99%	215416013
HSPF2	EHH-O24BAAlso listed as EHH-O24BB	11.2	Ducted, 2 tons	98%	206902027
SEER2	EMH-5O48BBH	20.9	Ducted, 3.5–4.5 tons	99%	213088007
EER2	EHP-O09KBA	16.6	Non-ducted, up to 1.5 tons	99%	215416013
Heating capacity at 5°F	EMH-2O18BBH	20,000 Btu/h	Non-ducted, up to 1.5 tons	96%	210586151

All 49 ECO AC models in Explore

ECO AC 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.

ECO AC: 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	70.4(50 is the typical model of its size class)EHH-O9BBwith ducted air handler EHH-D09BAAlso listed as EHH-O09BB8 of 9 models qualify · AHRI 207825494	78.5(50 is the typical model of its size class)EHH-O18BBwith ducted air handler EHH-D18BA9 of 9 models have all five ratings · AHRI 207825496
Ducted, 2 tons	80.3(50 is the typical model of its size class)EHH-O24BAwith ducted air handler EHH-D24BAAlso listed as EHH-O24BB4 of 4 models qualify · AHRI 206902027	83.8(50 is the typical model of its size class)EHH-O24BAwith ducted air handler EHH-D24BAAlso listed as EHH-O24BB5 of 5 models have all five ratings · AHRI 206902027
Ducted, 2.5–3 tons	74.7(50 is the typical model of its size class)EHI-O36BAHwith ducted air handler EHI-V36BA9 of 11 models qualify · AHRI 211253518	74.6(50 is the typical model of its size class)EMH-3O27BBH10 of 10 models have all five ratings · AHRI 210586155
Ducted, 3.5–4.5 tons	74.9(50 is the typical model of its size class)EMH-5O48BBH4 of 5 models qualify · AHRI 213088007	82.0(50 is the typical model of its size class)EMH-5O48BBH5 of 5 models have all five ratings · AHRI 213088007
Non-ducted, up to 1.5 tons	80.2(50 is the typical model of its size class)EHH-O9BBwith ductless indoor unit EHH-W09BBAlso listed as EHH-O09BB16 of 22 models qualify · AHRI 207825490	88.7(50 is the typical model of its size class)EHP-O09KBAwith ductless indoor unit EHP-W09KBA22 of 22 models have all five ratings · AHRI 215416013
Non-ducted, 2 tons	76.1(50 is the typical model of its size class)EMH-3O24KBA3 of 5 models qualify · AHRI 215420705	76.3(50 is the typical model of its size class)EHP-O24KBAwith ductless indoor unit EHP-W24KBA5 of 5 models have all five ratings · AHRI 215416011
Non-ducted, 2.5–3 tons	73.7(50 is the typical model of its size class)EMH-5O42KBA8 of 10 models qualify · AHRI 215420703	70.8(50 is the typical model of its size class)EMH-4O36BBH10 of 10 models have all five ratings · AHRI 210586157
Non-ducted, 3.5–4.5 tons	80.5(50 is the typical model of its size class)EMH-5O48BBH1 of 2 models qualify · AHRI 213088006	73.8(50 is the typical model of its size class)EMH-5O48BBH2 of 2 models have all five ratings · AHRI 213088006

All-around board, every manufacturer

Newest ECO AC certifications

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

The 5 most recently certified ECO AC outdoor models
Outdoor model	Size · type	COP@5°F	Cap. 5/47	HSPF2	SEER2	Meets	Combos	AHRI ref.
EHI-O60KBAECO ACwith ducted air handler EKCA60*I	4 tons50,500 Btu/h · Ducted	1.80	70%	8.5	15.2	CEE 25CEE 26XcelES CC	4	215428297
EHI-O36KBAECO ACwith ducted air handler EKCA36*I	2.5 tons32,000 Btu/h · Ducted	1.80	72%	8.5	15.2	CEE 25CEE 26XcelES CC	4	215428295
EHS-O09KBAECO AC · Standard efficiency serieswith ductless indoor unit EHS-W09KBA	1 ton9,100 Btu/h · Non-ducted	1.81	74%	8.8	19.5	CEE 25CEE 26XcelES CC	1	215420720
EHS-O12KBAECO AC · Standard efficiency serieswith ductless indoor unit EHS-W12KBA	1 ton12,000 Btu/h · Non-ducted	1.75	71%	8.5	17.5	ES CC	1	215420719
EHS-O18KBAECO AC · Standard efficiency serieswith ductless indoor unit EHS-W18KBA	1.5 tons17,600 Btu/h · Non-ducted	1.75	62%	8.5	17.5	CEE 25	1	215420718

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