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.

ECO-AIR and HITACHI 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, ECO-AIR and HITACHI split the 6 ratings 3–3.

ECO-AIR
HITACHI
Other ranked manufacturers

Source: AHRI Directory, NEEP · as of Oct 9, 2026

Average peer percentile, raw median and rank among ranked manufacturers
Rating	ECO-AIR	HITACHI
Efficiency index	56%median —	58%median —
COP at 5°F	51%median 1.98	72%median 2.25
Capacity retention at 5°F	53%median 68%	57%median 76%
HSPF2	69% (higher)median 9.4	65% (higher)median 9.8
SEER2	62% (higher)median 19.3	50% (higher)median 20.0
EER2	47%median 10.9	53%median 12.5
Heating capacity at 5°F	56% (higher)median 20,000 Btu/h	49% (higher)median 14,500 Btu/h
Outdoor models	58	27
AHRI certifications	142	47

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	ECO-AIR	HITACHI
CEE 2025 Tier 1 (Split ASHP)	62.1%36 models	74.1%20 models
CEE 2026 Tier 1 (Split ASHP)	58.6%34 models	74.1%20 models
CEE Advanced Tier (Split ASHP)	1.7%1 models	0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)	44.8%26 models	66.7%18 models
DOE Cold Climate Heat Pump Challenge	1.7%1 models	0%0 models
ENERGY STAR Cold Climate	50%29 models	14.8%4 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 · 8 groups where both have models

ECO-AIR
HITACHI
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 9, 2026

Models per peer group · efficiency index within the group
Size and duct type	ECO-AIR	HITACHI
Ducted, up to 1.5 tons	12 · index 61%	4 · index 50%
Ducted, 2 tons	4 · index 70%	2 · index 56%
Ducted, 2.5–3 tons	15 · index 53%	3 · index 71%
Ducted, 3.5–4.5 tons	10 · index 56%	3 · index 66%
Ducted, 5 tons and up	2 · index 49%	None
Non-ducted, up to 1.5 tons	18 · index 55%	15 · index 57%
Non-ducted, 2 tons	5 · index 53%	5 · index 57%
Non-ducted, 2.5–3 tons	10 · index 58%	4 · index 52%
Non-ducted, 3.5–4.5 tons	6 · index 52%	2 · index 60%
Non-ducted, 5 tons and up	None	1 · index 69%

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	ECO-AIRCold-climate score, best model	HITACHICold-climate score, best model
Ducted, up to 1.5 tons	86.9(50 is the typical model of its size class) (higher)MOX430U-18HFN1-Mwith ducted air handler MVBE-18HWFN1-MM3E9 of 12 models qualify · AHRI 213307908	55.9(50 is the typical model of its size class)RAS-1.0PNNBDH1with ducted air handler RPIL-1.0PNN1DH2 of 4 models qualify · AHRI 206750852
Ducted, 2 tons	80.3(50 is the typical model of its size class) (higher)MOD33-24HFN1-MT0Wwith ducted air handler MTIU-24HWFN1-M4 of 4 models qualify · AHRI 211644052	64.8(50 is the typical model of its size class)RAS-3.0PNNBDH1with ducted air handler RPIM-3.0PNN1DH1 of 2 models qualify · AHRI 206750858
Ducted, 2.5–3 tons	79.9(50 is the typical model of its size class) (higher)MOE30U-36HFN1-M(GA)with ducted air handler MTI-36HWFN1-M7 of 15 models qualify · AHRI 211644066	78.1(50 is the typical model of its size class)RAS-4.0PNNBDH1with ducted air handler RPIM-4.0PNN1DH2 of 3 models qualify · AHRI 206750860
Ducted, 3.5–4.5 tons	86.4(50 is the typical model of its size class)MOE30U-48HFN1-M-[X](GA)with ducted air handler MTI-48HWFN1-M7 of 11 models qualify · AHRI 211644067	None on this board (0 of 3 models qualify)
Ducted, 5 tons and up	None on this board (0 of 1 models qualify)	No models in this size class
Non-ducted, up to 1.5 tons	89.3(50 is the typical model of its size class) (higher)MOX230-09HFN1-MW5Wwith ductless indoor unit MSEPB-06HRFN1-MY5W9 of 18 models qualify · AHRI 208121863	81.1(50 is the typical model of its size class)RAC-SH09WHLAEwith ductless indoor unit RAS-SH09RHLAE13 of 15 models qualify · AHRI 206907172
Non-ducted, 2 tons	86.1(50 is the typical model of its size class) (higher)MOD30-24HFN1-MU0Wwith ductless indoor unit MCD1-24HRFN1-MT0W(GA)2 of 5 models qualify · AHRI 211644071	76.3(50 is the typical model of its size class)RAC-PH24WHLAEwith ductless indoor unit RAS-PH24PHLAE3 of 5 models qualify · AHRI 207200483
Non-ducted, 2.5–3 tons	87.0(50 is the typical model of its size class) (higher)M4OX630-36HFN1-M1X4 of 10 models qualify · AHRI 213307915	77.2(50 is the typical model of its size class)RAS-4.0PNNBDH1with ductless indoor unit RCI-4.0PNN1DH3 of 4 models qualify · AHRI 206750859
Non-ducted, 3.5–4.5 tons	76.2(50 is the typical model of its size class)M5OG-48HFN1-M-[X]3 of 6 models qualify · AHRI 209319647	None on this board (0 of 2 models qualify)
Non-ducted, 5 tons and up	No models in this size class	None on this board (0 of 1 models qualify)

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	ECO-AIRAll-around score, best model	HITACHIAll-around score, best model
Ducted, up to 1.5 tons	85.2(50 is the typical model of its size class) (higher)MOX330-09HFN1-MY5Wwith ducted air handler MTIU-09HWFN1-M12 of 12 models have all five ratings · AHRI 211644062	57.7(50 is the typical model of its size class)RAS-1.0PNNBDH1with ducted air handler RPIL-1.0PNN1DH3 of 4 models have all five ratings · AHRI 206750852
Ducted, 2 tons	83.8(50 is the typical model of its size class) (higher)MOD33-24HFN1-MT0Wwith ducted air handler MTIU-24HWFN1-M4 of 4 models have all five ratings · AHRI 211644052	55.8(50 is the typical model of its size class)RAS-3.0PNNBDH1with ducted air handler RPIM-3.0PNN1DH1 of 2 models have all five ratings · AHRI 206750858
Ducted, 2.5–3 tons	83.7(50 is the typical model of its size class) (higher)M4OX630-36HFN1-M1X15 of 15 models have all five ratings · AHRI 213307916	74.3(50 is the typical model of its size class)HVAHP036B21S*2 of 3 models have all five ratings · AHRI 203994975
Ducted, 3.5–4.5 tons	82.0(50 is the typical model of its size class) (higher)M5OG-48HFN1-M-[X]11 of 11 models have all five ratings · AHRI 209319648	77.8(50 is the typical model of its size class)HVAHP048B21S*2 of 3 models have all five ratings · AHRI 203994976
Ducted, 5 tons and up	57.1(50 is the typical model of its size class)MOE30U-60HFN1-M(GA)(X)with ducted air handler MHG-60HWFN1-MW1 of 1 models have all five ratings · AHRI 211644055	No models in this size class
Non-ducted, up to 1.5 tons	92.0(50 is the typical model of its size class) (higher)MOX230-09HFN1-MW5Wwith ductless indoor unit MSEPB-06HRFN1-MY5W18 of 18 models have all five ratings · AHRI 208121863	72.1(50 is the typical model of its size class)RAC-SH09WHLAEwith ductless indoor unit RAS-SH09RHLAE14 of 15 models have all five ratings · AHRI 206907172
Non-ducted, 2 tons	84.3(50 is the typical model of its size class) (higher)MOD30-24HFN1-MU0Wwith ductless indoor unit MSEPD-24HRFN1-MU0W5 of 5 models have all five ratings · AHRI 208121867	73.1(50 is the typical model of its size class)RAC-PH24WHLAEwith ductless indoor unit RAS-PH24PHLAE4 of 5 models have all five ratings · AHRI 207200483
Non-ducted, 2.5–3 tons	82.8(50 is the typical model of its size class) (higher)M4OI-36HFN1-M10 of 10 models have all five ratings · AHRI 209319644	74.6(50 is the typical model of its size class)HVAHP036B21S*3 of 4 models have all five ratings · AHRI 203994969
Non-ducted, 3.5–4.5 tons	77.9(50 is the typical model of its size class) (higher)M5OG-48HFN1-M-[X]6 of 6 models have all five ratings · AHRI 209319647	67.0(50 is the typical model of its size class)HVAHP048B21S*1 of 2 models have all five ratings · AHRI 203994970
Non-ducted, 5 tons and up	No models in this size class	68.5(50 is the typical model of its size class)HVAHP060B21S*1 of 1 models have all five ratings · AHRI 203994965

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	ECO-AIR	HITACHI
COP at 5°F	beats 98% · 2.45MOX230-12HFN1-MV5WNon-ducted, up to 1.5 tons	beats 99% · 2.30RAC-EH24WHLAENon-ducted, 2 tons
Capacity retention at 5°F	beats 97% · 111%MOX430U-18HFN1-MDucted, up to 1.5 tons	beats 99% · 133%RAC-PH09WHLAENon-ducted, up to 1.5 tons
HSPF2	beats 99% · 10.3MOE30U-48HFN1-M-[X](GA)Ducted, 3.5–4.5 tons	beats 98% · 10.0HVAHP048B21S*Ducted, 3.5–4.5 tons
SEER2	beats 99% · 24.6M3OJ-27HFN1-MNon-ducted, 2.5–3 tons	beats 93% · 23.1HVAHP048B21S*Non-ducted, 3.5–4.5 tons
EER2	beats 98% · 16.2MOX330-09HFN1-MY5WNon-ducted, up to 1.5 tons	beats 100% · 16.7HVAHP048B21S*Non-ducted, 3.5–4.5 tons
Heating capacity at 5°F	beats 98% · 41,000 Btu/hMOE30U-36HFN1-M(GA)Non-ducted, 2.5–3 tons	beats 99% · 23,000 Btu/hRAC-PH18WHLAENon-ducted, up to 1.5 tons

More comparisons

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ECO-AIR vs HITACHI heat pumps