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, Ecoer scores higher on 5 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	70% (higher)median — · 1st ranked	58% (higher)median —
COP at 5°F	74% (higher)median 2.10 · 1st ranked	49% (higher)median 1.90
Capacity retention at 5°F	67%median 82% · 2nd ranked	67%median 82%
HSPF2	72% (higher)median 9.2 · 1st ranked	68% (higher)median 9.6
SEER2	74% (higher)median 18.5 · 1st ranked	57% (higher)median 18.4
EER2	66% (higher)median 12.0 · 2nd ranked	48% (higher)median 10.9
Heating capacity at 5°F	70% (higher)median 29,200 Btu/h · 2nd ranked	64% (higher)median 20,000 Btu/h
Outdoor models	13	22
AHRI certifications	375	41

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)	92.3%12 models	68.2%15 models
CEE 2026 Tier 1 (Split ASHP)	92.3%12 models	68.2%15 models
CEE Advanced Tier (Split ASHP)	0%0 models	0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)	100%13 models	63.6%14 models
DOE Cold Climate Heat Pump Challenge	0%0 models	0%0 models
ENERGY STAR Cold Climate	46.2%6 models	72.7%16 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 · 4 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, up to 1.5 tons	2 · index 55%	2 · index 55%
Ducted, 2 tons	3 · index 84%	1 · index 51%
Ducted, 2.5–3 tons	2 · index 67%	4 · index 63%
Ducted, 3.5–4.5 tons	6 · index 70%	3 · index 63%
Non-ducted, up to 1.5 tons	None	8 · index 56%
Non-ducted, 2 tons	None	2 · index 49%
Non-ducted, 2.5–3 tons	None	5 · index 57%
Non-ducted, 3.5–4.5 tons	None	1 · index 78%

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	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	63.7(50 is the typical model of its size class) (higher)MHSD118DACFCwith ducted air handler MHCO24DACFC2 of 2 models qualify · AHRI 218631472
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	66.5(50 is the typical model of its size class)MHSD124DACFCwith ducted air handler MHAH124DACFC1 of 1 models qualify · AHRI 216372808
Ducted, 2.5–3 tons	78.6(50 is the typical model of its size class)ESCA16H-36with ducted air handler SNC36CPT3 of 3 models qualify · AHRI 213386490	78.6(50 is the typical model of its size class)MHSD136DACFCwith ducted air handler MHCO37DACFC4 of 4 models qualify · AHRI 218631475
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	74.9(50 is the typical model of its size class)MHMZ548DA3 of 3 models qualify · AHRI 208121942
Non-ducted, up to 1.5 tons	No models in this size class	89.3(50 is the typical model of its size class)MHSZ106DAwith ductless indoor unit MHWAL06DA6 of 8 models qualify · AHRI 208121923
Non-ducted, 2 tons	No models in this size class	86.1(50 is the typical model of its size class)MHSZ124DAwith ductless indoor unit MHCAS24DA1 of 2 models qualify · AHRI 208121931
Non-ducted, 2.5–3 tons	No models in this size class	79.3(50 is the typical model of its size class)MHMZ436DA2 of 5 models qualify · AHRI 208121938
Non-ducted, 3.5–4.5 tons	No models in this size class	76.2(50 is the typical model of its size class)MHMZ548DA1 of 1 models qualify · AHRI 208121941

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	63.4(50 is the typical model of its size class)MHSD118DACFCwith ducted air handler MHAH118DACFC2 of 2 models have all five ratings · AHRI 216372807
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	65.8(50 is the typical model of its size class)MHSD124DACFCwith ducted air handler MHAH124DACFC1 of 1 models have all five ratings · AHRI 216372808
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	74.6(50 is the typical model of its size class)MHMZ327DA4 of 4 models have all five ratings · AHRI 208121936
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	82.0(50 is the typical model of its size class)MHMZ548DA3 of 3 models have all five ratings · AHRI 208121942
Non-ducted, up to 1.5 tons	No models in this size class	92.0(50 is the typical model of its size class)MHSZ106DAwith ductless indoor unit MHWAL06DA8 of 8 models have all five ratings · AHRI 208121923
Non-ducted, 2 tons	No models in this size class	84.3(50 is the typical model of its size class)MHSZ124DAwith ductless indoor unit MHWAL24DA2 of 2 models have all five ratings · AHRI 208121927
Non-ducted, 2.5–3 tons	No models in this size class	82.8(50 is the typical model of its size class)MHMZ436DA4 of 5 models have all five ratings · AHRI 208121938
Non-ducted, 3.5–4.5 tons	No models in this size class	77.9(50 is the typical model of its size class)MHMZ548DA1 of 1 models have all five ratings · AHRI 208121941

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 98% · 2.82EODA18H-2436Ducted, up to 1.5 tons	beats 91% · 2.21MHSZ124DANon-ducted, 2 tons
Capacity retention at 5°F	beats 98% · 100%EODA19H-4860AA*Ducted, 3.5–4.5 tons	beats 92% · 107%MHSZ106DANon-ducted, up to 1.5 tons
HSPF2	beats 93% · 10.0ESCA16H-36Ducted, 2.5–3 tons	beats 98% · 13.6MHSZ106DANon-ducted, up to 1.5 tons
SEER2	beats 95% · 20.5EODA19H-2436AAlso listed as EODA19H-2436AADucted, 2 tons	beats 99% · 20.9MHMZ548DADucted, 3.5–4.5 tons
EER2	beats 95% · 13.0EODA18H-2436BAlso listed as EODA18H-2436BAADucted, 2 tons	beats 98% · 16.2MHSZ109DANon-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 95% · 48,500 Btu/hESCA16H-60Ducted, 3.5–4.5 tons	beats 96% · 20,000 Btu/hMHMZ218DANon-ducted, up to 1.5 tons

More comparisons

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Ecoer vs EMI heat pumps