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.

CLASSIC and Daizuki 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, CLASSIC scores higher on 4 of the 6 ratings.

CLASSIC
Daizuki
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	CLASSIC	Daizuki
Efficiency index	52%median —	52%median —
COP at 5°F	41% (higher)median 1.80	39% (higher)median 1.80
Capacity retention at 5°F	42%median 70%	43%median 70%
HSPF2	51% (higher)median 9.0	40% (higher)median 8.5
SEER2	52%median 20.0	52%median 19.0
EER2	49% (higher)median 11.5	43% (higher)median 10.0
Heating capacity at 5°F	45% (higher)median 13,000 Btu/h	42% (higher)median 11,600 Btu/h
Outdoor models	32	34
AHRI certifications	48	54

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	CLASSIC	Daizuki
CEE 2025 Tier 1 (Split ASHP)	56.3%18 models	58.8%20 models
CEE 2026 Tier 1 (Split ASHP)	56.3%18 models	55.9%19 models
CEE Advanced Tier (Split ASHP)	0%0 models	0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)	40.6%13 models	41.2%14 models
DOE Cold Climate Heat Pump Challenge	0%0 models	0%0 models
ENERGY STAR Cold Climate	12.5%4 models	0%0 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 · 8 groups where both have models

CLASSIC
Daizuki
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	CLASSIC	Daizuki
Ducted, up to 1.5 tons	3 · index 66%	4 · index 68%
Ducted, 2 tons	1 · index 85%	1 · index 84%
Ducted, 2.5–3 tons	3 · index 57%	2 · index 66%
Ducted, 3.5–4.5 tons	2 · index 54%	1 · index 64%
Non-ducted, up to 1.5 tons	14 · index 46%	21 · index 46%
Non-ducted, 2 tons	3 · index 57%	5 · index 42%
Non-ducted, 2.5–3 tons	12 · index 49%	7 · index 53%
Non-ducted, 3.5–4.5 tons	3 · index 46%	1 · index 59%

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	CLASSICCold-climate score, best model	DaizukiCold-climate score, best model
Ducted, up to 1.5 tons	67.8(50 is the typical model of its size class)MRSVHC12ASwith ducted air handler MFCHC12S2 of 3 models qualify · AHRI 209843001	70.4(50 is the typical model of its size class) (higher)DXLC-0923-1Zwith ducted air handler DXFU09E426-203 of 4 models qualify · AHRI 216021067
Ducted, 2 tons	82.4(50 is the typical model of its size class) (higher)MRSVHC24ASwith ducted air handler MFCHC24S1 of 1 models qualify · AHRI 209843003	80.3(50 is the typical model of its size class)DXLC-2423-1Zwith ducted air handler DXFU24E426-211 of 1 models qualify · AHRI 216021070
Ducted, 2.5–3 tons	None on this board (0 of 3 models qualify)	None on this board (0 of 2 models qualify)
Ducted, 3.5–4.5 tons	None on this board (0 of 2 models qualify)	None on this board (0 of 1 models qualify)
Non-ducted, up to 1.5 tons	57.1(50 is the typical model of its size class)MMRSHC18AS29 of 14 models qualify · AHRI 209843033	86.0(50 is the typical model of its size class) (higher)DXLC-0923-1Zwith ductless indoor unit DXMH09E426-2511 of 21 models qualify · AHRI 216021063
Non-ducted, 2 tons	74.2(50 is the typical model of its size class) (higher)MRSVHC24ASwith ductless indoor unit MUVHC24S2 of 3 models qualify · AHRI 209843008	74.1(50 is the typical model of its size class)DXLC-2423-1Zwith ductless indoor unit DXFC24E426-201 of 5 models qualify · AHRI 217196893
Non-ducted, 2.5–3 tons	49.3(50 is the typical model of its size class)MMRSHC27AS32 of 12 models qualify · AHRI 209843036	53.0(50 is the typical model of its size class) (higher)DXFM-2723-3Z1 of 7 models qualify · AHRI 211994914
Non-ducted, 3.5–4.5 tons	56.3(50 is the typical model of its size class) (higher)MRSVHC48ASwith ductless indoor unit MUVHC48S2 of 3 models qualify · AHRI 209843010	26.3(50 is the typical model of its size class)DXFM-4823-5Z1 of 1 models qualify · AHRI 211994920

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	CLASSICAll-around score, best model	DaizukiAll-around score, best model
Ducted, up to 1.5 tons	78.5(50 is the typical model of its size class)MRSVHC18ASwith ducted air handler MFCHC18S3 of 3 models have all five ratings · AHRI 209843002	78.5(50 is the typical model of its size class)DXLC-1823-1Zwith ducted air handler DXFU18E426-194 of 4 models have all five ratings · AHRI 216021069
Ducted, 2 tons	84.9(50 is the typical model of its size class) (higher)MRSVHC24ASwith ducted air handler MFCHC24S1 of 1 models have all five ratings · AHRI 209843003	83.8(50 is the typical model of its size class)DXLC-2423-1Zwith ducted air handler DXFU24E426-211 of 1 models have all five ratings · AHRI 216021070
Ducted, 2.5–3 tons	75.4(50 is the typical model of its size class)MMRSHC27AS33 of 3 models have all five ratings · AHRI 209843037	75.5(50 is the typical model of its size class) (higher)DXFM-2723-3Z2 of 2 models have all five ratings · AHRI 211994915
Ducted, 3.5–4.5 tons	63.5(50 is the typical model of its size class)MMRSHC48AS52 of 2 models have all five ratings · AHRI 209843043	63.5(50 is the typical model of its size class)DXFM-4823-5Z1 of 1 models have all five ratings · AHRI 211994921
Non-ducted, up to 1.5 tons	71.5(50 is the typical model of its size class)MRSVHC12ASwith ductless indoor unit MC4VHC12S14 of 14 models have all five ratings · AHRI 209842996	88.4(50 is the typical model of its size class) (higher)DXLC-0923-1Zwith ductless indoor unit DXMH09E426-2515 of 21 models have all five ratings · AHRI 216021063
Non-ducted, 2 tons	72.0(50 is the typical model of its size class)MRSVHC24ASwith ductless indoor unit MUVHC24S2 of 3 models have all five ratings · AHRI 209843008	77.5(50 is the typical model of its size class) (higher)DXLC-2423-1Zwith ductless indoor unit DXMH24E426-204 of 5 models have all five ratings · AHRI 216021066
Non-ducted, 2.5–3 tons	66.7(50 is the typical model of its size class)MMRSHC27AS36 of 12 models have all five ratings · AHRI 209843036	73.9(50 is the typical model of its size class) (higher)DXFM-2723-3Z3 of 7 models have all five ratings · AHRI 211994914
Non-ducted, 3.5–4.5 tons	51.7(50 is the typical model of its size class)MMRSHC48AS52 of 3 models have all five ratings · AHRI 209843042	59.4(50 is the typical model of its size class) (higher)DXFM-4823-5Z1 of 1 models have all five ratings · AHRI 211994920

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	CLASSIC	Daizuki
COP at 5°F	beats 91% · 2.27MRSVHC12ASNon-ducted, up to 1.5 tons	beats 92% · 2.28DXLC-1223-1ZNon-ducted, up to 1.5 tons
Capacity retention at 5°F	beats 59% · 68%MRSVHC48ASDucted, 3.5–4.5 tons	beats 71% · 86%DXLC-0923-1ZNon-ducted, up to 1.5 tons
HSPF2	beats 98% · 11.2MRSVHC24ASDucted, 2 tons	beats 98% · 11.2DXLC-2423-1ZDucted, 2 tons
SEER2	beats 98% · 21.0MMRSHC27AS3Ducted, 2.5–3 tons	beats 99% · 24.6DXFM-2723-3ZNon-ducted, 2.5–3 tons
EER2	beats 85% · 12.5MRSVHC24ASDucted, 2 tons	beats 97% · 14.0DXLC-2423-1ZNon-ducted, 2 tons
Heating capacity at 5°F	beats 85% · 14,000 Btu/hMMRSHC18AS2Non-ducted, up to 1.5 tons	beats 85% · 14,000 Btu/hDXFM-1823-2ZNon-ducted, up to 1.5 tons

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CLASSIC vs Daizuki heat pumps