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Daizuki vs MANUFLOW heat pumps

Measured against models of the same size and duct type, Daizuki and MANUFLOW split the 6 ratings 3–3. Daizuki has 34 outdoor models, MANUFLOW has 34 outdoor models. Daizuki and MANUFLOW have no QMID on file and are not ranked.

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CompareData as of updated · sources

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.
Daizuki and MANUFLOW 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, Daizuki and MANUFLOW split the 6 ratings 3–3.
  • Daizuki
  • MANUFLOW
  • Other ranked manufacturers
DaizukiMANUFLOW

Source: AHRI Directory, NEEP · as of

Average peer percentile, raw median and rank among ranked manufacturers
RatingDaizukiMANUFLOW
Efficiency index52%median —56%median —
COP at 5°F39% (higher)median 1.8034% (higher)median 1.80
Capacity retention at 5°F43%median 70%48%median 70%
HSPF240% (higher)median 8.528% (higher)median 8.6
SEER252% (higher)median 19.039% (higher)median 19.8
EER243%median 10.050%median 11.7
Heating capacity at 5°F42%median 11,600 Btu/h45%median 8,400 Btu/h
Outdoor models3434
AHRI certifications5434

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
StandardDaizukiMANUFLOW
CEE 2025 Tier 1 (Split ASHP)58.8%20 models35.3%12 models
CEE 2026 Tier 1 (Split ASHP)55.9%19 models35.3%12 models
CEE Advanced Tier (Split ASHP)0%0 models0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)41.2%14 models29.4%10 models
DOE Cold Climate Heat Pump Challenge0%0 models0%0 models
ENERGY STAR Cold Climate0%0 models0%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 · 3 groups where both have models
  • Daizuki
  • MANUFLOW
  • All models of the group
Ducted, up to 1.5 tons2.00884 modelsDucted, 2 tons2.00821 modelsDucted, 2.5–3 tons1.901,614 modelsDucted, 3.5–4.5 tons1.911,492 modelsNon-ducted, up to 1.5 tons1.902,417 modelsNon-ducted, 2 tons1.87611 modelsNon-ducted, 2.5–3 tons1.85975 modelsNon-ducted, 3.5–4.5 tons1.97438 modelsmedian

Raw ratings are only placed side by side within one size and duct type, where they are comparable.

Source: AHRI Directory · as of

Models per peer group · efficiency index within the group
Size and duct typeDaizukiMANUFLOW
Ducted, up to 1.5 tons4 · index 68%None
Ducted, 2 tons1 · index 84%None
Ducted, 2.5–3 tons2 · index 66%None
Ducted, 3.5–4.5 tons1 · index 64%None
Non-ducted, up to 1.5 tons21 · index 46%26 · index 55%
Non-ducted, 2 tons5 · index 42%6 · index 59%
Non-ducted, 2.5–3 tons7 · index 53%2 · index —
Non-ducted, 3.5–4.5 tons1 · index 59%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 typeDaizukiCold-climate score, best modelMANUFLOWCold-climate score, best model
Ducted, up to 1.5 tons70.4(50 is the typical model of its size class)DXLC-0923-1Zwith ducted air handler DXFU09E426-203 of 4 models qualify · AHRI 216021067No models in this size class
Ducted, 2 tons80.3(50 is the typical model of its size class)DXLC-2423-1Zwith ducted air handler DXFU24E426-211 of 1 models qualify · AHRI 216021070No models in this size class
Ducted, 2.5–3 tonsNone on this board (0 of 2 models qualify)No models in this size class
Ducted, 3.5–4.5 tonsNone on this board (0 of 1 models qualify)No models in this size class
Non-ducted, up to 1.5 tons86.0(50 is the typical model of its size class) (higher)DXLC-0923-1Zwith ductless indoor unit DXMH09E426-2511 of 21 models qualify · AHRI 21602106375.7(50 is the typical model of its size class)AS-09UW3SXEDJ(O)with ductless indoor unit AS-09UW3SXEDJ(I)9 of 26 models qualify · AHRI 202021915
Non-ducted, 2 tons74.1(50 is the typical model of its size class) (higher)DXLC-2423-1Zwith ductless indoor unit DXFC24E426-201 of 5 models qualify · AHRI 21719689364.0(50 is the typical model of its size class)AST-24UW3SDBDJ01(O)with ductless indoor unit AST-24UW3SDBDJ01(I)1 of 6 models qualify · AHRI 203446798
Non-ducted, 2.5–3 tons53.0(50 is the typical model of its size class)DXFM-2723-3Z1 of 7 models qualify · AHRI 211994914None on this board (0 of 2 models qualify)
Non-ducted, 3.5–4.5 tons26.3(50 is the typical model of its size class)DXFM-4823-5Z1 of 1 models qualify · AHRI 211994920No 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 typeDaizukiAll-around score, best modelMANUFLOWAll-around score, best model
Ducted, up to 1.5 tons78.5(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 216021069No models in this size class
Ducted, 2 tons83.8(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 216021070No models in this size class
Ducted, 2.5–3 tons75.5(50 is the typical model of its size class)DXFM-2723-3Z2 of 2 models have all five ratings · AHRI 211994915No models in this size class
Ducted, 3.5–4.5 tons63.5(50 is the typical model of its size class)DXFM-4823-5Z1 of 1 models have all five ratings · AHRI 211994921No models in this size class
Non-ducted, up to 1.5 tons88.4(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 21602106385.4(50 is the typical model of its size class)AS-09UW3SXEDJ(O)with ductless indoor unit AS-09UW3SXEDJ(I)12 of 26 models have all five ratings · AHRI 202021915
Non-ducted, 2 tons77.5(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 21602106658.5(50 is the typical model of its size class)AST-24UW3SDBDJ01(O)with ductless indoor unit AST-24UW3SDBDJ01(I)1 of 6 models have all five ratings · AHRI 203446798
Non-ducted, 2.5–3 tons73.9(50 is the typical model of its size class)DXFM-2723-3Z3 of 7 models have all five ratings · AHRI 211994914None on this board (0 of 2 models have all five ratings)
Non-ducted, 3.5–4.5 tons59.4(50 is the typical model of its size class)DXFM-4823-5Z1 of 1 models have all five ratings · AHRI 211994920No 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
RatingDaizukiMANUFLOW
COP at 5°Fbeats 92% · 2.28DXLC-1223-1ZNon-ducted, up to 1.5 tonsbeats 81% · 2.13AST-24UW3SDBDJ01(O)Non-ducted, 2 tons
Capacity retention at 5°Fbeats 71% · 86%DXLC-0923-1ZNon-ducted, up to 1.5 tonsbeats 73% · 89%AS-09UW3SXEDJ(O)Non-ducted, up to 1.5 tons
HSPF2beats 98% · 11.2DXLC-2423-1ZDucted, 2 tonsbeats 79% · 10.5AS-09UR3SXEDJ(O)Non-ducted, up to 1.5 tons
SEER2beats 99% · 24.6DXFM-2723-3ZNon-ducted, 2.5–3 tonsbeats 96% · 27.5AS-09UR3SXEDJ(O)Non-ducted, up to 1.5 tons
EER2beats 97% · 14.0DXLC-2423-1ZNon-ducted, 2 tonsbeats 93% · 15.5AS-09UR3SXEDJ(O)Non-ducted, up to 1.5 tons
Heating capacity at 5°Fbeats 85% · 14,000 Btu/hDXFM-1823-2ZNon-ducted, up to 1.5 tonsbeats 83% · 13,770 Btu/hAST-18UW3SBBDJ00(O)Non-ducted, up to 1.5 tons

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