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 EMI 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, EMI scores higher on 4 of the 6 ratings.

Ecoer
EMI
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	Ecoer	EMI
Efficiency index	54%median — · 13th ranked	62%median —
COP at 5°F	46%median 1.90 · 23rd ranked	56%median 2.00
Capacity retention at 5°F	65% (higher)median 79% · 3rd ranked	63% (higher)median 95%
HSPF2	68%median 9.0 · 3rd ranked	69%median 10.5
SEER2	60%median 17.5 · 8th ranked	61%median 21.4
EER2	37%median 11.0 · 27th ranked	60%median 12.5
Heating capacity at 5°F	69% (higher)median 33,600 Btu/h · 2nd ranked	60% (higher)median 18,000 Btu/h
Outdoor models	15	15
AHRI certifications	287	27

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	Ecoer	EMI
CEE 2025 Tier 1 (Split ASHP)	93.3%14 models	86.7%13 models
CEE 2026 Tier 1 (Split ASHP)	93.3%14 models	86.7%13 models
CEE Advanced Tier (Split ASHP)	0%0 models	6.7%1 models
Xcel Energy Colorado cold-climate ASHP (2025)	93.3%14 models	73.3%11 models
DOE Cold Climate Heat Pump Challenge	0%0 models	6.7%1 models
ENERGY STAR Cold Climate	100%15 models	73.3%11 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 · 2 groups where both have models

Ecoer
EMI
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	EMI
Ducted, 2 tons	4 · index 57%	None
Ducted, 2.5–3 tons	4 · index 53%	2 · index 81%
Ducted, 3.5–4.5 tons	7 · index 52%	1 · index 84%
Ducted, up to 1.5 tons	None	1 · index 77%
Non-ducted, up to 1.5 tons	None	8 · index 60%
Non-ducted, 2 tons	None	2 · index 53%
Non-ducted, 2.5–3 tons	None	4 · index 46%
Non-ducted, 3.5–4.5 tons	None	1 · index 76%

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	EMICold-climate score, best model
Ducted, up to 1.5 tons	No models in this size class	70.8(50 is the typical model of its size class)EMXMZ218DA1 of 1 models qualify · AHRI 215444941
Ducted, 2 tons	80.1(50 is the typical model of its size class)EODA19H-2436AB*with indoor coil D(A,C,E)24C3J+TDR and furnace FG7TC-060D-V24B3 of 3 models qualify · AHRI 217627911	No models in this size class
Ducted, 2.5–3 tons	78.1(50 is the typical model of its size class)EODA19H-4860AB*with indoor coil D(A,C,E)36C3J+TDR and furnace FG7TC-060D-V24B6 of 6 models qualify · AHRI 217627934	82.5(50 is the typical model of its size class) (higher)EMXMZ436DA2 of 2 models qualify · AHRI 215444947
Ducted, 3.5–4.5 tons	68.8(50 is the typical model of its size class)ESCA17H-48ABAwith ducted air handler EAHDEC-48ABA6 of 6 models qualify · AHRI 216706025	82.7(50 is the typical model of its size class) (higher)EMXMZ548DA1 of 1 models qualify · AHRI 215444950
Non-ducted, up to 1.5 tons	No models in this size class	96.7(50 is the typical model of its size class)EMXSZ106DAwith ductless indoor unit EMXWAL06DA6 of 8 models qualify · AHRI 215444935
Non-ducted, 2 tons	No models in this size class	88.4(50 is the typical model of its size class)EMXSZ124DAwith ductless indoor unit EMXWAL24DA2 of 2 models qualify · AHRI 215444939
Non-ducted, 2.5–3 tons	No models in this size class	78.0(50 is the typical model of its size class)EMXMZ436DA2 of 4 models qualify · AHRI 215444948
Non-ducted, 3.5–4.5 tons	No models in this size class	73.4(50 is the typical model of its size class)EMXMZ548DA1 of 1 models qualify · AHRI 215444951

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	EMIAll-around score, best model
Ducted, up to 1.5 tons	No models in this size class	77.4(50 is the typical model of its size class)EMXMZ218DA1 of 1 models have all five ratings · AHRI 215444941
Ducted, 2 tons	80.8(50 is the typical model of its size class)EODA19H-2436AB*with ducted air handler EAHDEN-24AB4 of 4 models have all five ratings · AHRI 216445239	No models in this size class
Ducted, 2.5–3 tons	79.0(50 is the typical model of its size class)EODA19H-4860AB*with ducted air handler EAHDEN-36AB4 of 4 models have all five ratings · AHRI 216620321	83.6(50 is the typical model of its size class) (higher)EMXMZ436DA2 of 2 models have all five ratings · AHRI 215444947
Ducted, 3.5–4.5 tons	63.7(50 is the typical model of its size class)ERDA19H-60AB*7 of 7 models have all five ratings · AHRI 217463590	83.9(50 is the typical model of its size class) (higher)EMXMZ548DA1 of 1 models have all five ratings · AHRI 215444950
Non-ducted, up to 1.5 tons	No models in this size class	96.2(50 is the typical model of its size class)EMXSZ106DAwith ductless indoor unit EMXWAL06DA8 of 8 models have all five ratings · AHRI 215444935
Non-ducted, 2 tons	No models in this size class	76.4(50 is the typical model of its size class)EMXSZ124DAwith ductless indoor unit EMXWAL24DA2 of 2 models have all five ratings · AHRI 215444939
Non-ducted, 2.5–3 tons	No models in this size class	78.3(50 is the typical model of its size class)EMXMZ436DA4 of 4 models have all five ratings · AHRI 215444946
Non-ducted, 3.5–4.5 tons	No models in this size class	75.6(50 is the typical model of its size class)EMXMZ548DA1 of 1 models have all five ratings · AHRI 215444949

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	EMI
COP at 5°F	beats 96% · 2.65EODA19H-4860AB*Ducted, 2.5–3 tons	beats 97% · 2.40EMXSZ106DANon-ducted, up to 1.5 tons
Capacity retention at 5°F	beats 92% · 105%ESCA17H-36ABADucted, 2.5–3 tons	beats 94% · 110%EMXSZ106DANon-ducted, up to 1.5 tons
HSPF2	beats 91% · 10.3ESCA17H-36ABADucted, 2.5–3 tons	beats 99% · 14.8EMXSZ106DANon-ducted, up to 1.5 tons
SEER2	beats 87% · 20.0EODA19H-2436AB*Ducted, 2 tons	beats 96% · 20.4EMXMZ548DADucted, 3.5–4.5 tons
EER2	beats 90% · 12.5EODA19H-4860AB*Ducted, 2.5–3 tons	beats 99% · 18.0EMXSZ106DANon-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 97% · 39,000 Btu/hESCA17H-36ABADucted, 2.5–3 tons	beats 97% · 19,000 Btu/hEMXMZ218DANon-ducted, up to 1.5 tons

More comparisons

Pick any two manufacturers

Ecoer vs EMI heat pumps