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 RUSSELL 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 scores higher on 5 of the 6 ratings.

ECO-AIR
RUSSELL
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	ECO-AIR	RUSSELL
Efficiency index	56% (higher)median —	49% (higher)median —
COP at 5°F	51%median 1.98	80%median 2.20
Capacity retention at 5°F	53% (higher)median 68%	43% (higher)median 57%
HSPF2	69% (higher)median 9.4	25% (higher)median 7.2
SEER2	62% (higher)median 19.3	32% (higher)median 14.3
EER2	47% (higher)median 10.9	42% (higher)median 10.6
Heating capacity at 5°F	56% (higher)median 20,000 Btu/h	42% (higher)median 24,200 Btu/h
Outdoor models	58	60
AHRI certifications	142	1,231

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	ECO-AIR	RUSSELL
CEE 2025 Tier 1 (Split ASHP)	62.1%36 models	16.7%10 models
CEE 2026 Tier 1 (Split ASHP)	58.6%34 models	16.7%10 models
CEE Advanced Tier (Split ASHP)	1.7%1 models	3.3%2 models
Xcel Energy Colorado cold-climate ASHP (2025)	44.8%26 models	13.3%8 models
DOE Cold Climate Heat Pump Challenge	1.7%1 models	3.3%2 models
ENERGY STAR Cold Climate	50%29 models	21.7%13 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 · 5 groups where both have models

ECO-AIR
RUSSELL
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	ECO-AIR	RUSSELL
Ducted, up to 1.5 tons	12 · index 61%	2 · index 27%
Ducted, 2 tons	4 · index 70%	7 · index 52%
Ducted, 2.5–3 tons	15 · index 53%	17 · index 52%
Ducted, 3.5–4.5 tons	10 · index 56%	26 · index 50%
Ducted, 5 tons and up	2 · index 49%	8 · index 70%
Non-ducted, up to 1.5 tons	18 · index 55%	None
Non-ducted, 2 tons	5 · index 53%	None
Non-ducted, 2.5–3 tons	10 · index 58%	None
Non-ducted, 3.5–4.5 tons	6 · index 52%	None

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	RUSSELLCold-climate score, best model
Ducted, up to 1.5 tons	86.9(50 is the typical model of its size class)MOX430U-18HFN1-Mwith ducted air handler MVBE-18HWFN1-MM3E9 of 12 models qualify · AHRI 213307908	None on this board (0 of 2 models qualify)
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	74.7(50 is the typical model of its size class)SP18AZ24AJVCwith indoor coil TCFZ2421HEAAM and furnace S951V0403A17UHU2 of 7 models qualify · AHRI 213372369
Ducted, 2.5–3 tons	79.9(50 is the typical model of its size class)MOE30U-36HFN1-M(GA)with ducted air handler MTI-36HWFN1-M7 of 15 models qualify · AHRI 211644066	80.6(50 is the typical model of its size class) (higher)SP18AZ36AJVCwith ducted air handler SHMVZ6021SEACA2 of 17 models qualify · AHRI 210106900
Ducted, 3.5–4.5 tons	86.4(50 is the typical model of its size class) (higher)MOE30U-48HFN1-M-[X](GA)with ducted air handler MTI-48HWFN1-M7 of 11 models qualify · AHRI 211644067	76.3(50 is the typical model of its size class)SP18AZ48AJVCwith indoor coil TCFZ6021SEAAM and furnace S962V1005A21M4S4 of 26 models qualify · AHRI 210106968
Ducted, 5 tons and up	None on this board (0 of 1 models qualify)	None on this board (0 of 8 models qualify)
Non-ducted, up to 1.5 tons	89.3(50 is the typical model of its size class)MOX230-09HFN1-MW5Wwith ductless indoor unit MSEPB-06HRFN1-MY5W9 of 18 models qualify · AHRI 208121863	No models in this size class
Non-ducted, 2 tons	86.1(50 is the typical model of its size class)MOD30-24HFN1-MU0Wwith ductless indoor unit MCD1-24HRFN1-MT0W(GA)2 of 5 models qualify · AHRI 211644071	No models in this size class
Non-ducted, 2.5–3 tons	87.0(50 is the typical model of its size class)M4OX630-36HFN1-M1X4 of 10 models qualify · AHRI 213307915	No models in this size class
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	No models in this size class

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	RUSSELLAll-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	34.5(50 is the typical model of its size class)SP15AZ18AJ2Nwith ducted air handler SH2CZ2417STANN2 of 2 models have all five ratings · AHRI 211627516
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	83.6(50 is the typical model of its size class)SP18AZ24AJVCwith indoor coil TCFZ2421HEAAM and furnace S951V0403A17UHU4 of 7 models have all five ratings · AHRI 213372369
Ducted, 2.5–3 tons	83.7(50 is the typical model of its size class)M4OX630-36HFN1-M1X15 of 15 models have all five ratings · AHRI 213307916	87.2(50 is the typical model of its size class) (higher)SP18AZ36AJVCwith indoor coil TCFZ6021SEAAM and furnace S802VA100521Z6 of 17 models have all five ratings · AHRI 210589394
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	80.3(50 is the typical model of its size class)SP18AZ48AJVCwith indoor coil TCFZ6021SEAAM and furnace S802VA100521Z9 of 26 models have all five ratings · AHRI 210589350
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	70.2(50 is the typical model of its size class) (higher)SP15AZ60AJ2Nwith indoor coil TCFZ6024STANM and furnace S97MV1005A21DHS1 of 8 models have all five ratings · AHRI 212387320
Non-ducted, up to 1.5 tons	92.0(50 is the typical model of its size class)MOX230-09HFN1-MW5Wwith ductless indoor unit MSEPB-06HRFN1-MY5W18 of 18 models have all five ratings · AHRI 208121863	No models in this size class
Non-ducted, 2 tons	84.3(50 is the typical model of its size class)MOD30-24HFN1-MU0Wwith ductless indoor unit MSEPD-24HRFN1-MU0W5 of 5 models have all five ratings · AHRI 208121867	No models in this size class
Non-ducted, 2.5–3 tons	82.8(50 is the typical model of its size class)M4OI-36HFN1-M10 of 10 models have all five ratings · AHRI 209319644	No models in this size class
Non-ducted, 3.5–4.5 tons	77.9(50 is the typical model of its size class)M5OG-48HFN1-M-[X]6 of 6 models have all five ratings · AHRI 209319647	No models in this size class

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	RUSSELL
COP at 5°F	beats 98% · 2.45MOX230-12HFN1-MV5WNon-ducted, up to 1.5 tons	beats 98% · 2.60SP15AZ60AJ2NDucted, 5 tons and up
Capacity retention at 5°F	beats 97% · 111%MOX430U-18HFN1-MDucted, up to 1.5 tons	beats 100% · 105%SP18AZ48AJVCDucted, 3.5–4.5 tons
HSPF2	beats 99% · 10.3MOE30U-48HFN1-M-[X](GA)Ducted, 3.5–4.5 tons	beats 75% · 9.5RD17AZ24AJ3NDucted, 2 tons
SEER2	beats 99% · 24.6M3OJ-27HFN1-MNon-ducted, 2.5–3 tons	beats 94% · 20.0SP18AZ24AJVCDucted, 2 tons
EER2	beats 98% · 16.2MOX330-09HFN1-MY5WNon-ducted, up to 1.5 tons	beats 91% · 12.5SP18AZ36AJVCDucted, 2.5–3 tons
Heating capacity at 5°F	beats 98% · 41,000 Btu/hMOE30U-36HFN1-M(GA)Non-ducted, 2.5–3 tons	beats 100% · 43,500 Btu/hSP18AZ36AJVCDucted, 2.5–3 tons

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ECO-AIR vs RUSSELL heat pumps