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 Pioneer 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 6 of the 6 ratings.

Bosch
Pioneer
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	Bosch	Pioneer
Efficiency index	62% (higher)median — · 3rd ranked	47% (higher)median — · 25th ranked
COP at 5°F	63% (higher)median 2.10 · 5th ranked	41% (higher)median 1.88 · 27th ranked
Capacity retention at 5°F	62% (higher)median 75% · 4th ranked	43% (higher)median 73% · 23rd ranked
HSPF2	68% (higher)median 9.5 · 4th ranked	56% (higher)median 9.5 · 12th ranked
SEER2	65% (higher)median 19.0 · 3rd ranked	56% (higher)median 20.0 · 13th ranked
EER2	55% (higher)median 11.7 · 12th ranked	40% (higher)median 11.2 · 24th ranked
Heating capacity at 5°F	65% (higher)median 23,000 Btu/h · 4th ranked	45% (higher)median 12,800 Btu/h · 23rd ranked
Outdoor models	47	46
AHRI certifications	1,789	69

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	Bosch	Pioneer
CEE 2025 Tier 1 (Split ASHP)	93.6%44 models	73.9%34 models
CEE 2026 Tier 1 (Split ASHP)	91.5%43 models	73.9%34 models
CEE Advanced Tier (Split ASHP)	14.9%7 models	0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)	83%39 models	69.6%32 models
DOE Cold Climate Heat Pump Challenge	14.9%7 models	0%0 models
ENERGY STAR Cold Climate	85.1%40 models	54.3%25 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
Pioneer
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	Pioneer
Ducted, up to 1.5 tons	10 · index 70%	4 · index 58%
Ducted, 2 tons	7 · index 65%	2 · index 68%
Ducted, 2.5–3 tons	12 · index 55%	4 · index 59%
Ducted, 3.5–4.5 tons	11 · index 68%	4 · index 59%
Ducted, 5 tons and up	4 · index 63%	1 · index 71%
Non-ducted, up to 1.5 tons	9 · index 71%	26 · index 48%
Non-ducted, 2 tons	3 · index 64%	5 · index 36%
Non-ducted, 2.5–3 tons	10 · index 51%	8 · index 32%
Non-ducted, 3.5–4.5 tons	3 · index 60%	3 · index 38%
Non-ducted, 5 tons and up	2 · index 35%	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	BoschCold-climate score, best model	PioneerCold-climate score, best model
Ducted, up to 1.5 tons	80.1(50 is the typical model of its size class) (higher)BMS500-AAS009-1CSXRDwith ducted air handler BMS500-AAU009-1AHDXD10 of 10 models qualify · AHRI 215223297	58.6(50 is the typical model of its size class)YN009GLSI24RPG4 of 4 models qualify · AHRI 217048762
Ducted, 2 tons	85.7(50 is the typical model of its size class) (higher)BMS500-AAS024-1CSXHDwith ducted air handler BMS500-AAU024-1AHDXD8 of 8 models qualify · AHRI 215223291	67.2(50 is the typical model of its size class)YD2436GCSI18RDwith ducted air handler DC024GCSICDHRT2 of 2 models qualify · AHRI 217048497
Ducted, 2.5–3 tons	83.7(50 is the typical model of its size class) (higher)BOVB-36MTB-M19Ewith ducted air handler BIVB-36MCB-M19X8 of 12 models qualify · AHRI 217903121	49.8(50 is the typical model of its size class)YN030GLSI24M3G2 of 4 models qualify · AHRI 217048773
Ducted, 3.5–4.5 tons	90.9(50 is the typical model of its size class) (higher)BOVA-60MTB-M19Ewith ducted air handler AE*L+DM60B4Z+TXV+TDR10 of 10 models qualify · AHRI 218693518	67.6(50 is the typical model of its size class)YN048GMSI20RUGwith ducted air handler RB048GMSILDFHG4 of 4 models qualify · AHRI 218010994
Ducted, 5 tons and up	63.4(50 is the typical model of its size class)BPBA-60RCB-M18SAlso listed as BPBB-60RTB-M18S3 of 4 models qualify · AHRI 216011943	64.1(50 is the typical model of its size class) (higher)PRD-60HWD1N10-M18G1 of 1 models qualify · AHRI 216684003
Non-ducted, up to 1.5 tons	97.5(50 is the typical model of its size class) (higher)BMS500-AAS009-1CSXRDwith ductless indoor unit BMS500-AAU006-1AHWXD8 of 9 models qualify · AHRI 217656832	78.7(50 is the typical model of its size class)YN018GMSI24RPGwith ductless indoor unit FB018GMSILDFHG21 of 26 models qualify · AHRI 218010990
Non-ducted, 2 tons	89.4(50 is the typical model of its size class) (higher)BMS500-AAS024-1CSXHDwith ductless indoor unit BMS500-AAU024-1AHCXD3 of 3 models qualify · AHRI 215223292	58.8(50 is the typical model of its size class)YN024GLSI24RPGwith ductless indoor unit CT024GLSILCFHG2 of 5 models qualify · AHRI 217048761
Non-ducted, 2.5–3 tons	78.0(50 is the typical model of its size class) (higher)BMS500-AAM036-1CSXHD8 of 10 models qualify · AHRI 215223324	62.8(50 is the typical model of its size class)YN036GMSI20RUGwith ductless indoor unit CB036GMSILDFHG3 of 8 models qualify · AHRI 218010991
Non-ducted, 3.5–4.5 tons	73.4(50 is the typical model of its size class) (higher)BMS500-AAM048-1CSXHD3 of 3 models qualify · AHRI 215223327	55.4(50 is the typical model of its size class)YN048GMSI20RUGwith ductless indoor unit CB048GMSILDFHG3 of 3 models qualify · AHRI 218010992
Non-ducted, 5 tons and up	50.6(50 is the typical model of its size class)BOHA-60MTB-M18S2 of 2 models qualify · AHRI 218059677	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	BoschAll-around score, best model	PioneerAll-around score, best model
Ducted, up to 1.5 tons	86.7(50 is the typical model of its size class) (higher)BMS500-AAS009-1CSXHDwith ducted air handler BMS500-AAU009-1AHDXD10 of 10 models have all five ratings · AHRI 215223281	69.0(50 is the typical model of its size class)YN020GLSI24M2G4 of 4 models have all five ratings · AHRI 217048772
Ducted, 2 tons	85.6(50 is the typical model of its size class) (higher)BOVA-36RTB-M20Swith ducted air handler L(E,G)M36FJ9 of 9 models have all five ratings · AHRI 217887951	79.6(50 is the typical model of its size class)YD2436GCSI18RDwith ducted air handler DC024GCSICDHRT2 of 2 models have all five ratings · AHRI 217048497
Ducted, 2.5–3 tons	83.6(50 is the typical model of its size class) (higher)BMS500-AAM036-1CSXHD10 of 10 models have all five ratings · AHRI 215223323	69.9(50 is the typical model of its size class)YN030GLSI24M3G4 of 4 models have all five ratings · AHRI 217048773
Ducted, 3.5–4.5 tons	86.3(50 is the typical model of its size class) (higher)BOVA-60MTB-M19Ewith ducted air handler (V,R)60H210P19*+TXV+AEFE511 of 11 models have all five ratings · AHRI 218796938	67.5(50 is the typical model of its size class)YN050GLSI24M5G4 of 4 models have all five ratings · AHRI 217048775
Ducted, 5 tons and up	70.1(50 is the typical model of its size class)BPBA-60RCB-M18SAlso listed as BPBB-60RTB-M18S4 of 4 models have all five ratings · AHRI 216011943	70.5(50 is the typical model of its size class) (higher)PRD-60HWD1N10-M18G1 of 1 models have all five ratings · AHRI 216684003
Non-ducted, up to 1.5 tons	95.8(50 is the typical model of its size class) (higher)BMS500-AAS009-1CSXRDwith ductless indoor unit BMS500-AAU006-1AHWXD9 of 9 models have all five ratings · AHRI 217656832	76.2(50 is the typical model of its size class)YN009GLSI25RPHwith ductless indoor unit WT009GLSI25HLH26 of 26 models have all five ratings · AHRI 217048754
Non-ducted, 2 tons	86.8(50 is the typical model of its size class) (higher)BMS500-AAS024-1CSXRDwith ductless indoor unit BMS500-AAU024-1AHWXD3 of 3 models have all five ratings · AHRI 215223306	56.5(50 is the typical model of its size class)YN024GLSI24RPGwith ductless indoor unit CT024GLSILCFHG5 of 5 models have all five ratings · AHRI 217048761
Non-ducted, 2.5–3 tons	78.3(50 is the typical model of its size class) (higher)BMS500-AAM036-1CSXHD10 of 10 models have all five ratings · AHRI 215223322	65.1(50 is the typical model of its size class)YN030GLSI24M3G8 of 8 models have all five ratings · AHRI 217048769
Non-ducted, 3.5–4.5 tons	75.6(50 is the typical model of its size class) (higher)BMS500-AAM048-1CSXHD3 of 3 models have all five ratings · AHRI 215223325	42.4(50 is the typical model of its size class)YN050GLSI24M5G3 of 3 models have all five ratings · AHRI 217048771
Non-ducted, 5 tons and up	36.0(50 is the typical model of its size class)BOHA-60MTB-M18S2 of 2 models have all five ratings · AHRI 218059677	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	Bosch	Pioneer
COP at 5°F	beats 99% · 2.73BOHA-24MTB-M18SDucted, up to 1.5 tons	beats 99% · 2.51YN012GMSI24RPGNon-ducted, up to 1.5 tons
Capacity retention at 5°F	beats 100% · 127%BOVA-60MTB-M19EDucted, 3.5–4.5 tons	beats 92% · 106%YN009GLSI25RPHNon-ducted, up to 1.5 tons
HSPF2	beats 99% · 11.0BMS500-AAM048-1CSXHDDucted, 3.5–4.5 tons	beats 97% · 13.5YN018GMSI24RPGNon-ducted, up to 1.5 tons
SEER2	beats 97% · 25.0BMS500-AAM027-1CSXRDNon-ducted, 2.5–3 tons	beats 99% · 22.0YN030GLSI24M3GDucted, 2.5–3 tons
EER2	beats 100% · 18.1BMS500-AAS009-1CSXRDNon-ducted, up to 1.5 tons	beats 93% · 13.3YD2436GCSI18RDDucted, 2 tons
Heating capacity at 5°F	beats 100% · 64,000 Btu/hBOVA-60MTB-M19EDucted, 3.5–4.5 tons	beats 90% · 17,800 Btu/hYN018GLSI25RPHNon-ducted, up to 1.5 tons

More comparisons

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Bosch vs Pioneer heat pumps