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.

Maestrale and ORTECH 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, Maestrale scores higher on 4 of the 6 ratings.

Maestrale
ORTECH
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	Maestrale	ORTECH
Efficiency index	64% (higher)median —	58% (higher)median —
COP at 5°F	29%median 1.80	53%median 2.00
Capacity retention at 5°F	72% (higher)median 96%	69% (higher)median 86%
HSPF2	71% (higher)median 10.3	65% (higher)median 9.5
SEER2	79% (higher)median 23.8	67% (higher)median 20.6
EER2	61% (higher)median 12.5	42% (higher)median 11.6
Heating capacity at 5°F	62%median 17,800 Btu/h	72%median 24,500 Btu/h
Outdoor models	24	24
AHRI certifications	24	24

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	Maestrale	ORTECH
CEE 2025 Tier 1 (Split ASHP)	100%24 models	83.3%20 models
CEE 2026 Tier 1 (Split ASHP)	100%24 models	83.3%20 models
CEE Advanced Tier (Split ASHP)	0%0 models	4.2%1 models
Xcel Energy Colorado cold-climate ASHP (2025)	100%24 models	79.2%19 models
DOE Cold Climate Heat Pump Challenge	0%0 models	4.2%1 models
ENERGY STAR Cold Climate	33.3%8 models	75%18 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 · 4 groups where both have models

Maestrale
ORTECH
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	Maestrale	ORTECH
Ducted, up to 1.5 tons	None	2 · index 51%
Ducted, 2 tons	None	2 · index 46%
Ducted, 2.5–3 tons	None	4 · index 50%
Ducted, 3.5–4.5 tons	None	4 · index 54%
Non-ducted, up to 1.5 tons	14 · index 71%	5 · index 58%
Non-ducted, 2 tons	4 · index 56%	3 · index 75%
Non-ducted, 2.5–3 tons	4 · index 58%	3 · index 66%
Non-ducted, 3.5–4.5 tons	2 · index 42%	1 · index 72%

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	MaestraleCold-climate score, best model	ORTECHCold-climate score, best model
Ducted, up to 1.5 tons	No models in this size class	53.8(50 is the typical model of its size class)OAH-AHU18K-CH-Owith ducted air handler OAH-AHU18K-CH-D2 of 2 models qualify · AHRI 218471060
Ducted, 2 tons	No models in this size class	59.5(50 is the typical model of its size class)OAH-AHU24K-CH-Owith ducted air handler OAH-AHU24K-CH-D2 of 2 models qualify · AHRI 218471061
Ducted, 2.5–3 tons	No models in this size class	69.4(50 is the typical model of its size class)OAH-AHU36K-CH-Owith ducted air handler OAH-AHU36K-CH-D2 of 4 models qualify · AHRI 218471063
Ducted, 3.5–4.5 tons	No models in this size class	74.9(50 is the typical model of its size class)OAH-AHU48K-CH-Owith ducted air handler OAH-AHU48K-CH-D4 of 4 models qualify · AHRI 218471064
Non-ducted, up to 1.5 tons	68.6(50 is the typical model of its size class)TSB20MBOR2J0X24Also listed as TSB20MBOR2J0X2414 of 14 models qualify · AHRI 218331913	82.7(50 is the typical model of its size class) (higher)OAH-MZ18K-208-CH-O5 of 5 models qualify · AHRI 218451243
Non-ducted, 2 tons	58.0(50 is the typical model of its size class)TSA24MAQU1J0X24-Owith ductless indoor unit TSA24MAQU1J0X24-IAlso listed as TSA24MAQU1JOX24-0, TSA24MAQU1J0X24-0, TSA24MAQU1J0X24-O4 of 4 models qualify · AHRI 218331912	84.4(50 is the typical model of its size class) (higher)OAH-MZ24K-208-CH-O3 of 3 models qualify · AHRI 218451244
Non-ducted, 2.5–3 tons	57.5(50 is the typical model of its size class)TSB24MBOR3J0X24*Also listed as TSB24MBOR3J0X244 of 4 models qualify · AHRI 218331928	73.2(50 is the typical model of its size class) (higher)OAH-MZ36K-208-CH-O3 of 3 models qualify · AHRI 218451245
Non-ducted, 3.5–4.5 tons	31.2(50 is the typical model of its size class)TSB45MBOR4J0X24Also listed as TSB45MBOR4J0X242 of 2 models qualify · AHRI 218331914	50.3(50 is the typical model of its size class) (higher)OAH-MZ42K-208-CH-O1 of 1 models qualify · AHRI 218451246

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	MaestraleAll-around score, best model	ORTECHAll-around score, best model
Ducted, up to 1.5 tons	No models in this size class	55.8(50 is the typical model of its size class)OAH-AHU18K-CH-Owith ducted air handler OAH-AHU18K-CH-D2 of 2 models have all five ratings · AHRI 218471060
Ducted, 2 tons	No models in this size class	55.5(50 is the typical model of its size class)OAH-AHU24K-CH-Owith ducted air handler OAH-AHU24K-CH-D2 of 2 models have all five ratings · AHRI 218471061
Ducted, 2.5–3 tons	No models in this size class	60.1(50 is the typical model of its size class)OAH-AHU30K-CH-Owith ducted air handler OAH-AHU30K-CH-D4 of 4 models have all five ratings · AHRI 218471062
Ducted, 3.5–4.5 tons	No models in this size class	59.2(50 is the typical model of its size class)OAH-AHU48K-CH-Owith ducted air handler OAH-AHU48K-CH-D4 of 4 models have all five ratings · AHRI 218471064
Non-ducted, up to 1.5 tons	76.2(50 is the typical model of its size class) (higher)TSA09MAQU1J0X24-Owith ductless indoor unit TSA09MAQU1J0X24-IAlso listed as TSA09MAQU1JOX24-O, TSA09MAQU1J0X24-O14 of 14 models have all five ratings · AHRI 218331911	74.3(50 is the typical model of its size class)OAH-MZ18K-208-CH-O5 of 5 models have all five ratings · AHRI 218451243
Non-ducted, 2 tons	56.1(50 is the typical model of its size class)TSA24MAQU1J0X24-Owith ductless indoor unit TSA24MAQU1J0X24-IAlso listed as TSA24MAQU1JOX24-0, TSA24MAQU1J0X24-0, TSA24MAQU1J0X24-O4 of 4 models have all five ratings · AHRI 218331912	85.3(50 is the typical model of its size class) (higher)OAH-MZ24K-208-CH-O3 of 3 models have all five ratings · AHRI 218451244
Non-ducted, 2.5–3 tons	65.1(50 is the typical model of its size class)TSB24MBOR3J0X24*Also listed as TSB24MBOR3J0X244 of 4 models have all five ratings · AHRI 218331928	78.3(50 is the typical model of its size class) (higher)OAH-MZ36K-208-CH-O3 of 3 models have all five ratings · AHRI 218451245
Non-ducted, 3.5–4.5 tons	42.4(50 is the typical model of its size class)TSB45MBOR4J0X24Also listed as TSB45MBOR4J0X242 of 2 models have all five ratings · AHRI 218331914	72.1(50 is the typical model of its size class) (higher)OAH-MZ42K-208-CH-O1 of 1 models have all five ratings · AHRI 218451246

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	Maestrale	ORTECH
COP at 5°F	beats 63% · 2.00TSB20MBOR2J0X24Also listed as TSB20MBOR2J0X24Non-ducted, up to 1.5 tons	beats 85% · 2.20OAH-SZ18K-208-PR-ONon-ducted, up to 1.5 tons
Capacity retention at 5°F	beats 92% · 106%TSA09MAQU1J0X24-OAlso listed as TSA09MAQU1JOX24-O, TSA09MAQU1J0X24-ONon-ducted, up to 1.5 tons	beats 98% · 108%OAH-MZ24K-208-CH-ONon-ducted, 2 tons
HSPF2	beats 80% · 10.5TSB24MBOR3J0X24*Also listed as TSB24MBOR3J0X24Non-ducted, 2.5–3 tons	beats 96% · 11.0OAH-MZ36K-208-CH-ONon-ducted, 2.5–3 tons
SEER2	beats 91% · 24.0TSB24MBOR3J0X24*Also listed as TSB24MBOR3J0X24Non-ducted, 2.5–3 tons	beats 94% · 24.0OAH-MZ42K-208-CH-ONon-ducted, 3.5–4.5 tons
EER2	beats 87% · 14.5TSA09MAQU1J0X24-OAlso listed as TSA09MAQU1JOX24-O, TSA09MAQU1J0X24-ONon-ducted, up to 1.5 tons	beats 87% · 12.5OAH-MZ42K-208-CH-ONon-ducted, 3.5–4.5 tons
Heating capacity at 5°F	beats 90% · 17,800 Btu/hTSA18MAQU1J0X24-O*Also listed as TSA18MAQU1JOX24-0, TSA18MAQU1J0X24-0, TSA18MAQU1J0X24-ONon-ducted, up to 1.5 tons	beats 99% · 21,800 Btu/hOAH-MZ18K-208-CH-ONon-ducted, up to 1.5 tons

More comparisons

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Maestrale vs ORTECH heat pumps