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.

Bosch and DIRECT AIR 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, Bosch scores higher on 4 of the 6 ratings.

Bosch
DIRECT AIR
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	Bosch	DIRECT AIR
Efficiency index	65% (higher)median — · 4th ranked	61% (higher)median —
COP at 5°F	55% (higher)median 2.00 · 12th ranked	53% (higher)median 1.96
Capacity retention at 5°F	60%median 73% · 8th ranked	61%median 80%
HSPF2	69% (higher)median 9.3 · 4th ranked	60% (higher)median 9.2
SEER2	70% (higher)median 19.2 · 2nd ranked	56% (higher)median 19.0
EER2	58% (higher)median 11.7 · 8th ranked	53% (higher)median 11.7
Heating capacity at 5°F	56%median 20,000 Btu/h · 12th ranked	56%median 19,000 Btu/h
Outdoor models	50	68
AHRI certifications	1,560	148

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	Bosch	DIRECT AIR
CEE 2025 Tier 1 (Split ASHP)	76%38 models	60.3%41 models
CEE 2026 Tier 1 (Split ASHP)	76%38 models	58.8%40 models
CEE Advanced Tier (Split ASHP)	2%1 models	1.5%1 models
Xcel Energy Colorado cold-climate ASHP (2025)	64%32 models	54.4%37 models
DOE Cold Climate Heat Pump Challenge	2%1 models	1.5%1 models
ENERGY STAR Cold Climate	30%15 models	50%34 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 · 9 groups where both have models

Bosch
DIRECT AIR
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	Bosch	DIRECT AIR
Ducted, up to 1.5 tons	11 · index 65%	12 · index 61%
Ducted, 2 tons	9 · index 72%	5 · index 67%
Ducted, 2.5–3 tons	12 · index 58%	13 · index 55%
Ducted, 3.5–4.5 tons	7 · index 68%	11 · index 58%
Ducted, 5 tons and up	5 · index 60%	2 · index 49%
Non-ducted, up to 1.5 tons	11 · index 68%	27 · index 65%
Non-ducted, 2 tons	2 · index 81%	6 · index 66%
Non-ducted, 2.5–3 tons	10 · index 61%	9 · index 59%
Non-ducted, 3.5–4.5 tons	4 · index 58%	4 · index 58%

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	BoschCold-climate score, best model	DIRECT AIRCold-climate score, best model
Ducted, up to 1.5 tons	75.2(50 is the typical model of its size class) (higher)BMS500-AAS009-1CSXHBwith ducted air handler BMS500-AAU009-1AHDXB10 of 11 models qualify · AHRI 204014467	74.9(50 is the typical model of its size class)DIRM-09HXPRO28-1Zwith ducted air handler DIRM-09HP-DUH9 of 12 models qualify · AHRI 207743749
Ducted, 2 tons	82.3(50 is the typical model of its size class) (higher)BMS500-AAS024-1CSXHBwith ducted air handler BMS500-AAU024-1AHDXB8 of 8 models qualify · AHRI 204014470	80.3(50 is the typical model of its size class)DIRM-24DA25-1Zwith ducted air handler DIRM-24HP-DU4 of 5 models qualify · AHRI 207743759
Ducted, 2.5–3 tons	89.0(50 is the typical model of its size class) (higher)BOVD-36HDN1-M20Gwith indoor coil D(A,C,E)36C44+TDR and furnace BGH96M100C5B5 of 12 models qualify · AHRI 215375438	78.6(50 is the typical model of its size class)DIRM-36MAGICPRO20-OUwith ducted air handler DIRM-36MAGICPRO20-COIL5 of 13 models qualify · AHRI 212388351
Ducted, 3.5–4.5 tons	88.1(50 is the typical model of its size class) (higher)BOVA-60HDN1-M20Gwith ducted air handler L(E,G)M48G45 of 8 models qualify · AHRI 212675690	74.9(50 is the typical model of its size class)DIRM-48HXPRO28-5Z3 of 11 models qualify · AHRI 207743795
Ducted, 5 tons and up	70.2(50 is the typical model of its size class)BRB-60HWD1N1-M19Also listed as BRBA-60HWD1N1-M182 of 5 models qualify · AHRI 202680590	None on this board (0 of 2 models qualify)
Non-ducted, up to 1.5 tons	89.3(50 is the typical model of its size class)BMS500-AAS009-1CSXRCwith ductless indoor unit BMS500-AAU006-1AHWXC7 of 11 models qualify · AHRI 207759993	89.3(50 is the typical model of its size class)DIRM-06HXPRO28-1Zwith ductless indoor unit DIRM-06HP-WM20 of 27 models qualify · AHRI 207743723
Non-ducted, 2 tons	86.1(50 is the typical model of its size class)BMS500-AAS024-1CSXHCwith ductless indoor unit BMS500-AAU024-1AHCXC2 of 2 models qualify · AHRI 207760018	86.1(50 is the typical model of its size class)DIRM-24HXPRO28-1Zwith ductless indoor unit DIRM-24HP-CA5 of 6 models qualify · AHRI 207743744
Non-ducted, 2.5–3 tons	79.3(50 is the typical model of its size class)BMS500-AAM036-1CSXHC3 of 10 models qualify · AHRI 207760039	79.3(50 is the typical model of its size class)DIRM-36HXPRO28-4Z2 of 9 models qualify · AHRI 207743791
Non-ducted, 3.5–4.5 tons	76.2(50 is the typical model of its size class)BMS500-AAM048-1CSXHC1 of 4 models qualify · AHRI 207760042	76.2(50 is the typical model of its size class)DIRM-48HXPRO28-5Z2 of 4 models qualify · AHRI 207743794

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	BoschAll-around score, best model	DIRECT AIRAll-around score, best model
Ducted, up to 1.5 tons	85.2(50 is the typical model of its size class)BMS500-AAS009-1CSXHCwith ducted air handler BMS500-AAU009-1AHDXB11 of 11 models have all five ratings · AHRI 207760001	85.2(50 is the typical model of its size class)DIRM-09HXPRO28-1Zwith ducted air handler DIRM-09HP-DUH11 of 12 models have all five ratings · AHRI 207743749
Ducted, 2 tons	87.9(50 is the typical model of its size class) (higher)BOVA-36HDN1-M20Gwith ducted air handler AE(D,N,U)+CM36B34+TDR9 of 9 models have all five ratings · AHRI 213885831	83.8(50 is the typical model of its size class)DIRM-24DA25-1Zwith ducted air handler DIRM-24HP-DU4 of 5 models have all five ratings · AHRI 207743759
Ducted, 2.5–3 tons	85.5(50 is the typical model of its size class) (higher)BOVD-36HDN1-M20Gwith indoor coil D(A,C,E)36C44+TDR and furnace BGH96M100C5B11 of 12 models have all five ratings · AHRI 215375438	75.4(50 is the typical model of its size class)DIRM-27DA25-3Z10 of 13 models have all five ratings · AHRI 207743777
Ducted, 3.5–4.5 tons	88.4(50 is the typical model of its size class) (higher)BOVA-60HDN1-M20Gwith ducted air handler L(E,G)M48G46 of 7 models have all five ratings · AHRI 212675690	82.0(50 is the typical model of its size class)DIRM-48HXPRO28-5Z6 of 11 models have all five ratings · AHRI 207743795
Ducted, 5 tons and up	75.1(50 is the typical model of its size class) (higher)BRB-60HWD1N1-M19Also listed as BRBA-60HWD1N1-M185 of 5 models have all five ratings · AHRI 202680590	54.5(50 is the typical model of its size class)MOE30U-60HFN1-Mwith ducted air handler MHG-60HWFN1-MW2 of 2 models have all five ratings · AHRI 203269797
Non-ducted, up to 1.5 tons	92.0(50 is the typical model of its size class)BMS500-AAS009-1CSXRCwith ductless indoor unit BMS500-AAU006-1AHWXC11 of 11 models have all five ratings · AHRI 207759993	92.0(50 is the typical model of its size class)DIRM-06HXPRO28-1Zwith ductless indoor unit DIRM-06HP-WM22 of 27 models have all five ratings · AHRI 207743723
Non-ducted, 2 tons	84.3(50 is the typical model of its size class)BMS500-AAS024-1CSXHCwith ductless indoor unit BMS500-AAU024-1AHWXC2 of 2 models have all five ratings · AHRI 207759997	84.3(50 is the typical model of its size class)DIRM-24HXPRO28-1Zwith ductless indoor unit DIRM-24HP-WM5 of 6 models have all five ratings · AHRI 207743727
Non-ducted, 2.5–3 tons	82.8(50 is the typical model of its size class)BMS500-AAM036-1CSXHC8 of 10 models have all five ratings · AHRI 207760039	82.8(50 is the typical model of its size class)DIRM-36HXPRO28-4Z7 of 9 models have all five ratings · AHRI 207743791
Non-ducted, 3.5–4.5 tons	77.9(50 is the typical model of its size class)BMS500-AAM048-1CSXHC3 of 4 models have all five ratings · AHRI 207760042	77.9(50 is the typical model of its size class)DIRM-48HXPRO28-5Z3 of 4 models have all five ratings · AHRI 207743794

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	Bosch	DIRECT AIR
COP at 5°F	beats 99% · 3.03BOVD-36HDN1-M20GDucted, 2.5–3 tons	beats 97% · 2.39DIRM-12DA25-1ZNon-ducted, up to 1.5 tons
Capacity retention at 5°F	beats 100% · 126%BOVD-36HDN1-M20GDucted, 2.5–3 tons	beats 93% · 108%DIRM-09HXPRO28-1ZDucted, up to 1.5 tons
HSPF2	beats 98% · 13.6BMS500-AAS009-1CSXRCNon-ducted, up to 1.5 tons	beats 98% · 13.6DIRM-06HXPRO28-1ZNon-ducted, up to 1.5 tons
SEER2	beats 99% · 24.6BMS500-AAM027-1CSXRCNon-ducted, 2.5–3 tons	beats 99% · 24.6DIRM-27DA25-3ZNon-ducted, 2.5–3 tons
EER2	beats 98% · 16.2BMS500-AAS009-1CSXHCNon-ducted, up to 1.5 tons	beats 98% · 16.2DIRM-09HXPRO28-1ZNon-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 96% · 20,000 Btu/hBMS500-AAM018-1CSXHCNon-ducted, up to 1.5 tons	beats 96% · 20,000 Btu/hDIRM-18HXPRO28-2ZNon-ducted, up to 1.5 tons

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Bosch vs DIRECT AIR heat pumps