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.

ADP and Gridless 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, ADP and Gridless split the 6 ratings 3–3.

ADP
Gridless
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	ADP	Gridless
Efficiency index	52%median —	60%median —
COP at 5°F	46% (higher)median 1.90	40% (higher)median 1.84
Capacity retention at 5°F	73%median 83%	77%median 86%
HSPF2	64% (higher)median 8.6	60% (higher)median 9.5
SEER2	57%median 16.0	68%median 21.0
EER2	30%median 10.0	56%median 12.5
Heating capacity at 5°F	70% (higher)median 27,000 Btu/h	67% (higher)median 22,800 Btu/h
Outdoor models	41	11
AHRI certifications	471	11

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	ADP	Gridless
CEE 2025 Tier 1 (Split ASHP)	53.7%22 models	100%11 models
CEE 2026 Tier 1 (Split ASHP)	53.7%22 models	100%11 models
CEE Advanced Tier (Split ASHP)	2.4%1 models	0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)	73.2%30 models	100%11 models
DOE Cold Climate Heat Pump Challenge	2.4%1 models	0%0 models
ENERGY STAR Cold Climate	0%0 models	90.9%10 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 · 3 groups where both have models

ADP
Gridless
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	ADP	Gridless
Ducted, up to 1.5 tons	3 · index 46%	None
Ducted, 2 tons	12 · index 50%	1 · index 46%
Ducted, 2.5–3 tons	14 · index 52%	1 · index 63%
Ducted, 3.5–4.5 tons	11 · index 56%	1 · index 57%
Ducted, 5 tons and up	1 · index 61%	None
Non-ducted, up to 1.5 tons	None	4 · index 63%
Non-ducted, 2 tons	None	2 · index 64%
Non-ducted, 2.5–3 tons	None	1 · index 70%
Non-ducted, 3.5–4.5 tons	None	1 · index 45%

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	ADPCold-climate score, best model	GridlessCold-climate score, best model
Ducted, up to 1.5 tons	62.3(50 is the typical model of its size class)DLCURAH18ABKwith ducted air handler H,GE31930+TD3 of 3 models qualify · AHRI 213613872	No models in this size class
Ducted, 2 tons	75.3(50 is the typical model of its size class) (higher)4TXD2036A10NU*with ducted air handler F,PEG3493011 of 11 models qualify · AHRI 212396553	57.5(50 is the typical model of its size class)O-AYC24SD-1with ducted air handler I-AYC24VAH-11 of 1 models qualify · AHRI 213249673
Ducted, 2.5–3 tons	79.8(50 is the typical model of its size class) (higher)DIRM-36MAGICPRO20-OUwith ducted air handler HG8J936+TD13 of 15 models qualify · AHRI 212897484	75.1(50 is the typical model of its size class)O-AYC36SD-1with ducted air handler I-AYC36VAH-11 of 1 models qualify · AHRI 213249674
Ducted, 3.5–4.5 tons	78.0(50 is the typical model of its size class) (higher)BOVA-60HDN1-M20Gwith indoor coil HE35948 and furnace BGH96M100D5A9 of 11 models qualify · AHRI 212361477	56.6(50 is the typical model of its size class)O-AYC48SD-1with ducted air handler I-AYC48VAH-11 of 1 models qualify · AHRI 213249675
Ducted, 5 tons and up	74.1(50 is the typical model of its size class)AC060BXUPCHwith ducted air handler F,PE*CC79601 of 1 models qualify · AHRI 211289597	No models in this size class
Non-ducted, up to 1.5 tons	No models in this size class	72.9(50 is the typical model of its size class)O-AYD09SD-1with ductless indoor unit I-AYD09W-14 of 4 models qualify · AHRI 213265552
Non-ducted, 2 tons	No models in this size class	56.8(50 is the typical model of its size class)O-AYD24SD-32 of 2 models qualify · AHRI 213255584
Non-ducted, 2.5–3 tons	No models in this size class	64.0(50 is the typical model of its size class)O-AYD36SD-41 of 1 models qualify · AHRI 213255585
Non-ducted, 3.5–4.5 tons	No models in this size class	41.8(50 is the typical model of its size class)O-AYD42SD-51 of 1 models qualify · AHRI 213255586

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	ADPAll-around score, best model	GridlessAll-around score, best model
Ducted, up to 1.5 tons	49.9(50 is the typical model of its size class)DLCURAH18ABKwith ducted air handler H,GE31930+TD3 of 3 models have all five ratings · AHRI 213613872	No models in this size class
Ducted, 2 tons	83.7(50 is the typical model of its size class) (higher)SL25XPV-024-230A**with indoor coil LP36/37R9 and furnace EL297UH070XV36B13 of 13 models have all five ratings · AHRI 213360216	46.3(50 is the typical model of its size class)O-AYC24SD-1with ducted air handler I-AYC24VAH-11 of 1 models have all five ratings · AHRI 213249673
Ducted, 2.5–3 tons	77.4(50 is the typical model of its size class) (higher)SL25XPV-036-230A*with indoor coil L35/36U9 and furnace EL297UH110XV48C13 of 13 models have all five ratings · AHRI 213360276	63.2(50 is the typical model of its size class)O-AYC36SD-1with ducted air handler I-AYC36VAH-11 of 1 models have all five ratings · AHRI 213249674
Ducted, 3.5–4.5 tons	82.6(50 is the typical model of its size class) (higher)SL25XPV-048-230A**with indoor coil LH42/62W9 and furnace EL297UH110XV60C11 of 11 models have all five ratings · AHRI 213361090	57.3(50 is the typical model of its size class)O-AYC48SD-1with ducted air handler I-AYC48VAH-11 of 1 models have all five ratings · AHRI 213249675
Ducted, 5 tons and up	60.6(50 is the typical model of its size class)AC060BXUPCHwith ducted air handler F,PE*CC79601 of 1 models have all five ratings · AHRI 211289597	No models in this size class
Non-ducted, up to 1.5 tons	No models in this size class	81.4(50 is the typical model of its size class)O-AYD09SD-1with ductless indoor unit I-AYD09W-14 of 4 models have all five ratings · AHRI 213265552
Non-ducted, 2 tons	No models in this size class	67.5(50 is the typical model of its size class)O-AYD24SD-32 of 2 models have all five ratings · AHRI 213255584
Non-ducted, 2.5–3 tons	No models in this size class	69.5(50 is the typical model of its size class)O-AYD36SD-41 of 1 models have all five ratings · AHRI 213255585
Non-ducted, 3.5–4.5 tons	No models in this size class	44.5(50 is the typical model of its size class)O-AYD42SD-51 of 1 models have all five ratings · AHRI 213255586

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	ADP	Gridless
COP at 5°F	beats 90% · 2.50BOVA-60HDN1-M20GDucted, 3.5–4.5 tons	beats 75% · 2.05O-AYC36SD-1Ducted, 2.5–3 tons
Capacity retention at 5°F	beats 100% · 91%AC060BXUPCHDucted, 5 tons and up	beats 99% · 113%O-AYD36SD-4Non-ducted, 2.5–3 tons
HSPF2	beats 96% · 9.0AC060BXUPCHDucted, 5 tons and up	beats 83% · 9.5O-AYC36SD-1Ducted, 2.5–3 tons
SEER2	beats 100% · 23.0SL25XPV-024-230A**Ducted, 2 tons	beats 89% · 25.5O-AYD09SD-1Non-ducted, up to 1.5 tons
EER2	beats 100% · 14.5SL25XPV-024-230A**Ducted, 2 tons	beats 89% · 14.5O-AYD09SD-1Non-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 99% · 32,800 Btu/hWSEHV2436RA1-CAlso listed as WSEHV2436RA1-NDucted, 2 tons	beats 92% · 18,000 Btu/hO-AYD18SD-2Non-ducted, up to 1.5 tons

More comparisons

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ADP vs Gridless heat pumps