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A/H EDEN vs DIMONDAIR heat pumps

Measured against models of the same size and duct type, A/H EDEN scores higher on 2 of the 6 ratings. A/H EDEN has 7 outdoor models, DIMONDAIR has 7 outdoor models. A/H EDEN and DIMONDAIR 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.
A/H EDEN and DIMONDAIR 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, A/H EDEN scores higher on 2 of the 6 ratings.
  • A/H EDEN
  • DIMONDAIR
  • Other ranked manufacturers
A/H EDENDIMONDAIR

Source: AHRI Directory, NEEP · as of

Average peer percentile, raw median and rank among ranked manufacturers
RatingA/H EDENDIMONDAIR
Efficiency index34%median ——median —
COP at 5°F43%median 1.90—median —
Capacity retention at 5°F31%median 73%—median —
HSPF245% (higher)median 9.526% (higher)median 7.5
SEER231% (higher)median 20.021% (higher)median 14.3
EER226%median 10.560%median 11.7
Heating capacity at 5°F33%median 9,000 Btu/h—median —
Outdoor models77
AHRI certifications77

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
StandardA/H EDENDIMONDAIR
CEE 2025 Tier 1 (Split ASHP)85.7%6 models0%0 models
CEE 2026 Tier 1 (Split ASHP)85.7%6 models0%0 models
CEE Advanced Tier (Split ASHP)0%0 models0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)57.1%4 models0%0 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 · 0 groups where both have models
  • A/H EDEN
  • DIMONDAIR
  • All models of the group
Ducted, up to 1.5 tons1.901,783 modelsDucted, 2 tons2.001,090 modelsDucted, 2.5–3 tons2.001,909 modelsDucted, 3.5–4.5 tons2.002,224 modelsNon-ducted, up to 1.5 tons1.953,455 modelsNon-ducted, 2 tons2.00863 modelsNon-ducted, 2.5–3 tons2.001,106 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 typeA/H EDENDIMONDAIR
Ducted, up to 1.5 tonsNone1 · index —
Ducted, 2 tonsNone1 · index —
Ducted, 2.5–3 tonsNone3 · index —
Ducted, 3.5–4.5 tonsNone2 · index —
Non-ducted, up to 1.5 tons5 · index 35%None
Non-ducted, 2 tons1 · index 39%None
Non-ducted, 2.5–3 tons1 · index 23%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 typeA/H EDENCold-climate score, best modelDIMONDAIRCold-climate score, best model
Ducted, up to 1.5 tonsNo models in this size classNone on this board (0 of 1 models qualify)
Ducted, 2 tonsNo models in this size classNone on this board (0 of 1 models qualify)
Ducted, 2.5–3 tonsNo models in this size classNone on this board (0 of 3 models qualify)
Ducted, 3.5–4.5 tonsNo models in this size classNone on this board (0 of 2 models qualify)
Non-ducted, up to 1.5 tons50.4(50 is the typical model of its size class)AS09HP2ACwith ductless indoor unit AS09HP2AE4 of 5 models qualify · AHRI 217513412No models in this size class
Non-ducted, 2 tonsNone on this board (0 of 1 models qualify)No models in this size class
Non-ducted, 2.5–3 tonsNone on this board (0 of 1 models qualify)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 typeA/H EDENAll-around score, best modelDIMONDAIRAll-around score, best model
Ducted, up to 1.5 tonsNo models in this size classNone on this board (0 of 1 models have all five ratings)
Ducted, 2 tonsNo models in this size classNone on this board (0 of 1 models have all five ratings)
Ducted, 2.5–3 tonsNo models in this size classNone on this board (0 of 3 models have all five ratings)
Ducted, 3.5–4.5 tonsNo models in this size classNone on this board (0 of 2 models have all five ratings)
Non-ducted, up to 1.5 tons43.9(50 is the typical model of its size class)AS09HP2ACwith ductless indoor unit AS09HP2AE5 of 5 models have all five ratings · AHRI 217513412No models in this size class
Non-ducted, 2 tons39.1(50 is the typical model of its size class)AS24HP2AC*with ductless indoor unit AS24HP2AE1 of 1 models have all five ratings · AHRI 217617212No models in this size class
Non-ducted, 2.5–3 tons23.4(50 is the typical model of its size class)AS36HP2AC*with ductless indoor unit AS36HP2AE1 of 1 models have all five ratings · AHRI 217617213No 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
RatingA/H EDENDIMONDAIR
COP at 5°Fbeats 88% · 2.10AS36HP2AC*Non-ducted, 2.5–3 tons—
Capacity retention at 5°Fbeats 47% · 75%AS12HP1ACNon-ducted, up to 1.5 tons—
HSPF2beats 64% · 10.0AS09HP2ACNon-ducted, up to 1.5 tonsbeats 27% · 7.5D1448HCS32ADucted, 3.5–4.5 tons
SEER2beats 47% · 21.0AS24HP2AC*Non-ducted, 2 tonsbeats 22% · 14.3D1448HCS32ADucted, 3.5–4.5 tons
EER2beats 44% · 12.0AS09HP2ACNon-ducted, up to 1.5 tonsbeats 67% · 11.7D1448HCS32ADucted, 3.5–4.5 tons
Heating capacity at 5°Fbeats 72% · 12,500 Btu/hAS18HP2ACNon-ducted, up to 1.5 tons—

More comparisons

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