Against comparable models

Each cell is the share of same-size, same-type models that the manufacturer’s typical model beats (50% is typical); the higher score is in bold. Raw medians are underneath for context: they depend on which sizes each one makes, so they are not compared.

Ecoer and Gridless on every ratingPeer scores, 0–100 · grey ticks: every ranked manufacturer · shaded: the middle half of each one’s modelsMeasured against models of the same size and duct type, Ecoer scores higher on 5 of the 6 ratings.

Ecoer
Gridless
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	Ecoer	Gridless
Efficiency index	70% (higher)median — · 1st ranked	60% (higher)median —
COP at 5°F	74% (higher)median 2.10 · 1st ranked	40% (higher)median 1.84
Capacity retention at 5°F	67%median 82% · 2nd ranked	77%median 86%
HSPF2	72% (higher)median 9.2 · 1st ranked	60% (higher)median 9.5
SEER2	74% (higher)median 18.5 · 1st ranked	68% (higher)median 21.0
EER2	66% (higher)median 12.0 · 2nd ranked	56% (higher)median 12.5
Heating capacity at 5°F	70% (higher)median 29,200 Btu/h · 2nd ranked	67% (higher)median 22,800 Btu/h
Outdoor models	13	11
AHRI certifications	375	11

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	Ecoer	Gridless
CEE 2025 Tier 1 (Split ASHP)	92.3%12 models	100%11 models
CEE 2026 Tier 1 (Split ASHP)	92.3%12 models	100%11 models
CEE Advanced Tier (Split ASHP)	0%0 models	0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)	100%13 models	100%11 models
DOE Cold Climate Heat Pump Challenge	0%0 models	0%0 models
ENERGY STAR Cold Climate	46.2%6 models	90.9%10 models

Sizes and duct types offered

Models in each peer group, with the efficiency index of those models against the rest of the group.

Side by side, inside each size and duct typeShape: every model of the group · bars: each manufacturer’s middle half, median dot, 10th–90th line · 3 groups where both have models

Ecoer
Gridless
All models of the group

Raw ratings are only placed side by side within one size and duct type, where they are comparable.

Source: AHRI Directory · as of Oct 11, 2026

Models per peer group · efficiency index within the group
Size and duct type	Ecoer	Gridless
Ducted, up to 1.5 tons	2 · index 55%	None
Ducted, 2 tons	3 · index 84%	1 · index 46%
Ducted, 2.5–3 tons	2 · index 67%	1 · index 63%
Ducted, 3.5–4.5 tons	6 · index 70%	1 · index 57%
Non-ducted, up to 1.5 tons	None	4 · index 63%
Non-ducted, 2 tons	None	2 · index 64%
Non-ducted, 2.5–3 tons	None	1 · index 70%
Non-ducted, 3.5–4.5 tons	None	1 · index 45%

Cold-climate and all-around picks, size class by size class

Each manufacturer’s best model on each board in every size and duct type, side by side; the higher score is in bold. Both scores are 0–100 against every model of that size class (the line on each bar is 50, the typical model there), so the two compare fairly even when they make different sizes.

Cold-climate picks

Best cold-climate pick per size and duct type (keeps at least 70% of its heat at 5°F). 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.
Size and duct type	EcoerCold-climate score, best model	GridlessCold-climate score, best model
Ducted, up to 1.5 tons	63.5(50 is the typical model of its size class)EODA18H-2436with ducted air handler AE(D,N,U)+CM30B24+TDR1 of 1 models qualify · AHRI 213885835	No models in this size class
Ducted, 2 tons	71.9(50 is the typical model of its size class) (higher)EODA18H-2436Bwith indoor coil D(A,C,E)24C34+TDR and furnace MGH96M060B3AAlso listed as EODA18H-2436BAA4 of 4 models qualify · AHRI 214592558	57.5(50 is the typical model of its size class)O-AYC24SD-1with ducted air handler I-AYC24VAH-11 of 1 models qualify · AHRI 213249673
Ducted, 2.5–3 tons	78.6(50 is the typical model of its size class) (higher)ESCA16H-36with ducted air handler SNC36CPT3 of 3 models qualify · AHRI 213386490	75.1(50 is the typical model of its size class)O-AYC36SD-1with ducted air handler I-AYC36VAH-11 of 1 models qualify · AHRI 213249674
Ducted, 3.5–4.5 tons	78.6(50 is the typical model of its size class) (higher)EODA19H-4860Awith ducted air handler EAHATN-48BAlso listed as EODA19H-4860AA5 of 5 models qualify · AHRI 214303510	56.6(50 is the typical model of its size class)O-AYC48SD-1with ducted air handler I-AYC48VAH-11 of 1 models qualify · AHRI 213249675
Non-ducted, up to 1.5 tons	No models in this size class	72.9(50 is the typical model of its size class)O-AYD09SD-1with ductless indoor unit I-AYD09W-14 of 4 models qualify · AHRI 213265552
Non-ducted, 2 tons	No models in this size class	56.8(50 is the typical model of its size class)O-AYD24SD-32 of 2 models qualify · AHRI 213255584
Non-ducted, 2.5–3 tons	No models in this size class	64.0(50 is the typical model of its size class)O-AYD36SD-41 of 1 models qualify · AHRI 213255585
Non-ducted, 3.5–4.5 tons	No models in this size class	41.8(50 is the typical model of its size class)O-AYD42SD-51 of 1 models qualify · AHRI 213255586

All-around best

Best all-around model per size and duct type. 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.
Size and duct type	EcoerAll-around score, best model	GridlessAll-around score, best model
Ducted, 2 tons	84.1(50 is the typical model of its size class) (higher)EODA19H-2436Awith ducted air handler EAHATN-24BAlso listed as EODA19H-2436AA5 of 5 models have all five ratings · AHRI 214303508	46.3(50 is the typical model of its size class)O-AYC24SD-1with ducted air handler I-AYC24VAH-11 of 1 models have all five ratings · AHRI 213249673
Ducted, 2.5–3 tons	80.4(50 is the typical model of its size class) (higher)EODA18H-4860Bwith ducted air handler EAHATN-36BAlso listed as EODA18H-4860BAA4 of 4 models have all five ratings · AHRI 207861758	63.2(50 is the typical model of its size class)O-AYC36SD-1with ducted air handler I-AYC36VAH-11 of 1 models have all five ratings · AHRI 213249674
Ducted, 3.5–4.5 tons	86.4(50 is the typical model of its size class) (higher)EODA19H-4860Awith ducted air handler EAHATN-48BAlso listed as EODA19H-4860AA4 of 4 models have all five ratings · AHRI 214303510	57.3(50 is the typical model of its size class)O-AYC48SD-1with ducted air handler I-AYC48VAH-11 of 1 models have all five ratings · AHRI 213249675
Non-ducted, up to 1.5 tons	No models in this size class	81.4(50 is the typical model of its size class)O-AYD09SD-1with ductless indoor unit I-AYD09W-14 of 4 models have all five ratings · AHRI 213265552
Non-ducted, 2 tons	No models in this size class	67.5(50 is the typical model of its size class)O-AYD24SD-32 of 2 models have all five ratings · AHRI 213255584
Non-ducted, 2.5–3 tons	No models in this size class	69.5(50 is the typical model of its size class)O-AYD36SD-41 of 1 models have all five ratings · AHRI 213255585
Non-ducted, 3.5–4.5 tons	No models in this size class	44.5(50 is the typical model of its size class)O-AYD42SD-51 of 1 models have all five ratings · AHRI 213255586

All-around board, every manufacturer

Standout model on each rating

Each manufacturer’s model that beats the largest share of comparable models on the rating; the higher share is in bold.

Top model per rating by peer percentile, with its AHRI-certified value and peer group
Rating	Ecoer	Gridless
COP at 5°F	beats 98% · 2.82EODA18H-2436Ducted, up to 1.5 tons	beats 75% · 2.05O-AYC36SD-1Ducted, 2.5–3 tons
Capacity retention at 5°F	beats 98% · 100%EODA19H-4860AA*Ducted, 3.5–4.5 tons	beats 99% · 113%O-AYD36SD-4Non-ducted, 2.5–3 tons
HSPF2	beats 93% · 10.0ESCA16H-36Ducted, 2.5–3 tons	beats 83% · 9.5O-AYC36SD-1Ducted, 2.5–3 tons
SEER2	beats 95% · 20.5EODA19H-2436AAlso listed as EODA19H-2436AADucted, 2 tons	beats 89% · 25.5O-AYD09SD-1Non-ducted, up to 1.5 tons
EER2	beats 95% · 13.0EODA18H-2436BAlso listed as EODA18H-2436BAADucted, 2 tons	beats 89% · 14.5O-AYD09SD-1Non-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 95% · 48,500 Btu/hESCA16H-60Ducted, 3.5–4.5 tons	beats 92% · 18,000 Btu/hO-AYD18SD-2Non-ducted, up to 1.5 tons

More comparisons

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Ecoer vs Gridless heat pumps