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.

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

Innovair
RUSSELL
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	Innovair	RUSSELL
Efficiency index	56% (higher)median — · 12th ranked	49% (higher)median —
COP at 5°F	51%median 1.91 · 17th ranked	80%median 2.20
Capacity retention at 5°F	64% (higher)median 82% · 6th ranked	43% (higher)median 57%
HSPF2	53% (higher)median 8.8 · 13th ranked	25% (higher)median 7.2
SEER2	50% (higher)median 17.0 · 12th ranked	32% (higher)median 14.3
EER2	42%median 10.6 · 25th ranked	42%median 10.6
Heating capacity at 5°F	64% (higher)median 21,555 Btu/h · 4th ranked	42% (higher)median 24,200 Btu/h
Outdoor models	44	60
AHRI certifications	91	1,231

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	Innovair	RUSSELL
CEE 2025 Tier 1 (Split ASHP)	52.3%23 models	16.7%10 models
CEE 2026 Tier 1 (Split ASHP)	47.7%21 models	16.7%10 models
CEE Advanced Tier (Split ASHP)	0%0 models	3.3%2 models
Xcel Energy Colorado cold-climate ASHP (2025)	47.7%21 models	13.3%8 models
DOE Cold Climate Heat Pump Challenge	0%0 models	3.3%2 models
ENERGY STAR Cold Climate	52.3%23 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

Innovair
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	Innovair	RUSSELL
Ducted, up to 1.5 tons	5 · index 53%	2 · index 27%
Ducted, 2 tons	5 · index 63%	7 · index 52%
Ducted, 2.5–3 tons	7 · index 51%	17 · index 52%
Ducted, 3.5–4.5 tons	6 · index 53%	26 · index 50%
Ducted, 5 tons and up	1 · index 42%	8 · index 70%
Non-ducted, up to 1.5 tons	11 · index 68%	None
Non-ducted, 2 tons	5 · index 68%	None
Non-ducted, 2.5–3 tons	7 · index 44%	None
Non-ducted, 3.5–4.5 tons	1 · index 45%	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	InnovairCold-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)SHV18H2R20with ducted air handler WEV18H2R194 of 5 models qualify · AHRI 213255597	None on this board (0 of 2 models qualify)
Ducted, 2 tons	75.6(50 is the typical model of its size class) (higher)MHD-24with ducted air handler MHD-CC2.0-17.5-M4 of 5 models qualify · AHRI 210365430	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	78.6(50 is the typical model of its size class)SHV36H2R20with ducted air handler MAC36H2124E4 of 7 models qualify · AHRI 213160476	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	73.8(50 is the typical model of its size class)SHV48H2R20with ducted air handler DEV48H2R193 of 6 models qualify · AHRI 210343157	76.3(50 is the typical model of its size class) (higher)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	80.1(50 is the typical model of its size class)EIN10H2V32(O)with ductless indoor unit EIN10H2V32(I)7 of 11 models qualify · AHRI 206330207	No models in this size class
Non-ducted, 2 tons	68.5(50 is the typical model of its size class)EIN24H2V32(O)with ductless indoor unit EIN24H2V32(I)3 of 5 models qualify · AHRI 206330210	No models in this size class
Non-ducted, 2.5–3 tons	64.0(50 is the typical model of its size class)VOM36H7R4P71 of 7 models qualify · AHRI 207821954	No models in this size class
Non-ducted, 3.5–4.5 tons	41.9(50 is the typical model of its size class)VOM42H7R5P71 of 1 models qualify · AHRI 207821958	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	InnovairAll-around score, best model	RUSSELLAll-around score, best model
Ducted, up to 1.5 tons	82.8(50 is the typical model of its size class) (higher)SHV18H2R20with ducted air handler WEV18H2R195 of 5 models have all five ratings · AHRI 213255597	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	71.6(50 is the typical model of its size class)VOM24H7R3P75 of 5 models have all five ratings · AHRI 207821950	83.6(50 is the typical model of its size class) (higher)SP18AZ24AJVCwith indoor coil TCFZ2421HEAAM and furnace S951V0403A17UHU4 of 7 models have all five ratings · AHRI 213372369
Ducted, 2.5–3 tons	78.6(50 is the typical model of its size class)VOM36H7R4P77 of 7 models have all five ratings · AHRI 207821953	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	60.7(50 is the typical model of its size class)VOM42H7R5P76 of 6 models have all five ratings · AHRI 207821956	80.3(50 is the typical model of its size class) (higher)SP18AZ48AJVCwith indoor coil TCFZ6021SEAAM and furnace S802VA100521Z9 of 26 models have all five ratings · AHRI 210589350
Ducted, 5 tons and up	41.7(50 is the typical model of its size class)SEV60H2R19with ducted air handler DEV60H2R191 of 1 models have all five ratings · AHRI 208106863	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	88.7(50 is the typical model of its size class)EIN10H2V32(O)with ductless indoor unit EIN10H2V32(I)7 of 11 models have all five ratings · AHRI 206330207	No models in this size class
Non-ducted, 2 tons	76.3(50 is the typical model of its size class)EIN24H2V32(O)with ductless indoor unit EIN24H2V32(I)3 of 5 models have all five ratings · AHRI 206330210	No models in this size class
Non-ducted, 2.5–3 tons	69.5(50 is the typical model of its size class)VOM36H7R4P75 of 7 models have all five ratings · AHRI 207821954	No models in this size class
Non-ducted, 3.5–4.5 tons	44.5(50 is the typical model of its size class)VOM42H7R5P71 of 1 models have all five ratings · AHRI 207821957	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	Innovair	RUSSELL
COP at 5°F	beats 91% · 2.37VEA36H2V18Ducted, 2.5–3 tons	beats 98% · 2.60SP15AZ60AJ2NDucted, 5 tons and up
Capacity retention at 5°F	beats 99% · 144%EIN10H2V32(O)Non-ducted, up to 1.5 tons	beats 100% · 105%SP18AZ48AJVCDucted, 3.5–4.5 tons
HSPF2	beats 93% · 10.8SHV18H2R20Ducted, up to 1.5 tons	beats 75% · 9.5RD17AZ24AJ3NDucted, 2 tons
SEER2	beats 96% · 21.0VOM24H7R3P7Ducted, 2 tons	beats 94% · 20.0SP18AZ24AJVCDucted, 2 tons
EER2	beats 99% · 16.6EIN10H2V32(O)Non-ducted, up to 1.5 tons	beats 91% · 12.5SP18AZ36AJVCDucted, 2.5–3 tons
Heating capacity at 5°F	beats 96% · 20,000 Btu/hEIN18H2V32(O)Non-ducted, up to 1.5 tons	beats 100% · 43,500 Btu/hSP18AZ36AJVCDucted, 2.5–3 tons

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Innovair vs RUSSELL heat pumps