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.

STEALTH and TRUST AIR CONDITIONERS 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, TRUST AIR CONDITIONERS scores higher on 5 of the 6 ratings.

STEALTH
TRUST AIR CONDITIONERS
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	STEALTH	TRUST AIR CONDITIONERS
Efficiency index	54%median —	61%median —
COP at 5°F	53%median 2.00	59%median 2.00
Capacity retention at 5°F	59%median 78%	61%median 78%
HSPF2	59%median 9.0	72%median 10.0
SEER2	62%median 18.0	62%median 20.0
EER2	39%median 11.3	54%median 11.7
Heating capacity at 5°F	62%median 24,600 Btu/h	66%median 26,000 Btu/h
Outdoor models	11	54
AHRI certifications	11	171

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	STEALTH	TRUST AIR CONDITIONERS
CEE 2025 Tier 1 (Split ASHP)	72.7%8 models	92.6%50 models
CEE 2026 Tier 1 (Split ASHP)	72.7%8 models	90.7%49 models
CEE Advanced Tier (Split ASHP)	0%0 models	1.9%1 models
Xcel Energy Colorado cold-climate ASHP (2025)	63.6%7 models	81.5%44 models
DOE Cold Climate Heat Pump Challenge	0%0 models	1.9%1 models
ENERGY STAR Cold Climate	0%0 models	83.3%45 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 · 7 groups where both have models

STEALTH
TRUST AIR CONDITIONERS
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	STEALTH	TRUST AIR CONDITIONERS
Ducted, up to 1.5 tons	1 · index 47%	11 · index 73%
Ducted, 2 tons	1 · index 37%	6 · index 64%
Ducted, 2.5–3 tons	2 · index 42%	12 · index 68%
Ducted, 3.5–4.5 tons	2 · index 51%	13 · index 66%
Ducted, 5 tons and up	None	3 · index 66%
Non-ducted, up to 1.5 tons	1 · index 60%	16 · index 61%
Non-ducted, 2 tons	1 · index 72%	5 · index 55%
Non-ducted, 2.5–3 tons	3 · index 62%	9 · index 55%
Non-ducted, 3.5–4.5 tons	None	10 · index 47%
Non-ducted, 5 tons and up	None	2 · index 27%

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	STEALTHCold-climate score, best model	TRUST AIR CONDITIONERSCold-climate score, best model
Ducted, up to 1.5 tons	49.3(50 is the typical model of its size class)AC-18-HP-E-32with ducted air handler AC-18-AH-E-321 of 1 models qualify · AHRI 218729456	82.3(50 is the typical model of its size class) (higher)OAH18H/O6S4Pwith ducted air handler IUMDH18H/I63P10 of 11 models qualify · AHRI 217678082
Ducted, 2 tons	45.9(50 is the typical model of its size class)AC-24-HP-E-32with ducted air handler AC-24-AH-E-321 of 1 models qualify · AHRI 218729457	85.7(50 is the typical model of its size class) (higher)OAH24H/O6S4Pwith ducted air handler IUMDH24H/I63P6 of 6 models qualify · AHRI 217678083
Ducted, 2.5–3 tons	None on this board (0 of 2 models qualify)	83.2(50 is the typical model of its size class)OAH36H/O6S4Pwith ducted air handler IUMDH36H/I63P10 of 12 models qualify · AHRI 217678084
Ducted, 3.5–4.5 tons	72.2(50 is the typical model of its size class)AC-48-HP-E-32with ducted air handler AC-48-AH-E-322 of 2 models qualify · AHRI 218729460	82.7(50 is the typical model of its size class) (higher)M6H48HS/O6S4PAlso listed as M6H48HN/O6S4P13 of 13 models qualify · AHRI 217678130
Ducted, 5 tons and up	No models in this size class	None on this board (0 of 3 models qualify)
Non-ducted, up to 1.5 tons	64.5(50 is the typical model of its size class)AC-18Z-E-M21 of 1 models qualify · AHRI 218729439	94.4(50 is the typical model of its size class) (higher)OUS06H/O6S4Pwith ductless indoor unit IUMC106H/I61P12 of 16 models qualify · AHRI 217678094
Non-ducted, 2 tons	67.5(50 is the typical model of its size class)AC-24Z-E-M31 of 1 models qualify · AHRI 218729440	89.4(50 is the typical model of its size class) (higher)OAH24H/O6S4Pwith ductless indoor unit IUMC424H/I61P5 of 5 models qualify · AHRI 217678074
Non-ducted, 2.5–3 tons	58.8(50 is the typical model of its size class)AC-42Z-E-M53 of 3 models qualify · AHRI 218729443	89.4(50 is the typical model of its size class) (higher)OAH36H/O6S4Pwith ductless indoor unit IUMFC36H/I61P9 of 9 models qualify · AHRI 217678091
Non-ducted, 3.5–4.5 tons	No models in this size class	69.9(50 is the typical model of its size class)M6H60HS/O6S4PAlso listed as M6H60HN/O6S4P9 of 10 models qualify · AHRI 217678134
Non-ducted, 5 tons and up	No models in this size class	None on this board (0 of 2 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	STEALTHAll-around score, best model	TRUST AIR CONDITIONERSAll-around score, best model
Ducted, up to 1.5 tons	47.1(50 is the typical model of its size class)AC-18-HP-E-32with ducted air handler AC-18-AH-E-321 of 1 models have all five ratings · AHRI 218729456	86.7(50 is the typical model of its size class) (higher)OAH09H/O6S4Pwith ducted air handler IUMDL09H/I63P11 of 11 models have all five ratings · AHRI 217678077
Ducted, 2 tons	37.2(50 is the typical model of its size class)AC-24-HP-E-32with ducted air handler AC-24-AH-E-321 of 1 models have all five ratings · AHRI 218729457	78.8(50 is the typical model of its size class) (higher)OUS24H/O6S4Pwith ducted air handler IUMDH24H/I63P6 of 6 models have all five ratings · AHRI 217678110
Ducted, 2.5–3 tons	42.6(50 is the typical model of its size class)AC-36-HP-E-32with ducted air handler AC-36-AH-E-322 of 2 models have all five ratings · AHRI 218729459	83.6(50 is the typical model of its size class) (higher)M5H36HS/O6S4PAlso listed as M5H36HN/O6S4P12 of 12 models have all five ratings · AHRI 217678127
Ducted, 3.5–4.5 tons	53.2(50 is the typical model of its size class)AC-48-HP-E-32with ducted air handler AC-48-AH-E-322 of 2 models have all five ratings · AHRI 218729460	85.1(50 is the typical model of its size class) (higher)M6S48HS/O6S4PAlso listed as M6S48HN/O6S4P13 of 13 models have all five ratings · AHRI 217678145
Ducted, 5 tons and up	No models in this size class	67.5(50 is the typical model of its size class)OUS60H/O6S4Pwith ducted air handler IUMDH60H/I63P3 of 3 models have all five ratings · AHRI 217678174
Non-ducted, up to 1.5 tons	59.7(50 is the typical model of its size class)AC-18Z-E-M21 of 1 models have all five ratings · AHRI 218729439	93.8(50 is the typical model of its size class) (higher)OUS06H/O6S4Pwith ductless indoor unit IUMW106H/I61P16 of 16 models have all five ratings · AHRI 217678065
Non-ducted, 2 tons	71.8(50 is the typical model of its size class)AC-24Z-E-M31 of 1 models have all five ratings · AHRI 218729440	74.3(50 is the typical model of its size class) (higher)OUS24H/O6S4Pwith ductless indoor unit IUMW124H/I61P5 of 5 models have all five ratings · AHRI 217678064
Non-ducted, 2.5–3 tons	66.6(50 is the typical model of its size class) (higher)AC-30Z-E-M43 of 3 models have all five ratings · AHRI 218729441	66.3(50 is the typical model of its size class)M5H36HS/O6S4PAlso listed as M5H36HN/O6S4P9 of 9 models have all five ratings · AHRI 217678126
Non-ducted, 3.5–4.5 tons	No models in this size class	62.6(50 is the typical model of its size class)M6H60HS/O6S4PAlso listed as M6H60HN/O6S4P10 of 10 models have all five ratings · AHRI 217678132
Non-ducted, 5 tons and up	No models in this size class	32.5(50 is the typical model of its size class)M6S60HS/O6S4PAlso listed as M6S60HN/O6S4P2 of 2 models have all five ratings · AHRI 217678177

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	STEALTH	TRUST AIR CONDITIONERS
COP at 5°F	beats 69% · 2.10AC-48-HP-E-32Ducted, 3.5–4.5 tons	beats 99% · 2.51OUS12H/O6S4PNon-ducted, up to 1.5 tons
Capacity retention at 5°F	beats 79% · 90%AC-24Z-E-M3Non-ducted, 2 tons	beats 98% · 120%OAH09H/O6S4PDucted, up to 1.5 tons
HSPF2	beats 69% · 9.0AC-48-HP-E-32Ducted, 3.5–4.5 tons	beats 99% · 11.0M6H48HS/O6S4PAlso listed as M6H48HN/O6S4PDucted, 3.5–4.5 tons
SEER2	beats 79% · 23.0AC-24Z-E-M3Non-ducted, 2 tons	beats 96% · 20.4M6H48HS/O6S4PAlso listed as M6H48HN/O6S4PDucted, 3.5–4.5 tons
EER2	beats 75% · 12.5AC-30Z-E-M4Non-ducted, 2.5–3 tons	beats 96% · 16.0OUS06H/O6S4PNon-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 85% · 14,500 Btu/hAC-18Z-E-M2Non-ducted, up to 1.5 tons	beats 98% · 39,500 Btu/hOAH36H/O6S4PNon-ducted, 2.5–3 tons

More comparisons

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STEALTH vs TRUST AIR CONDITIONERS heat pumps