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AOKOL vs Coast Air heat pumps

Measured against models of the same size and duct type, AOKOL and Coast Air split the 6 ratings 3–3. AOKOL has 4 outdoor models, Coast Air has 4 outdoor models. AOKOL and Coast Air 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.
AOKOL and Coast 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, AOKOL and Coast Air split the 6 ratings 3–3.
  • AOKOL
  • Coast Air
  • Other ranked manufacturers
AOKOLCoast Air

Source: AHRI Directory, NEEP · as of

Average peer percentile, raw median and rank among ranked manufacturers
RatingAOKOLCoast Air
Efficiency index58%median —67%median —
COP at 5°F52%median 2.0076%median 2.13
Capacity retention at 5°F41% (higher)median 72%29% (higher)median 71%
HSPF265%median 10.375%median 10.9
SEER277% (higher)median 23.372% (higher)median 23.1
EER249%median 11.675%median 13.2
Heating capacity at 5°F39% (higher)median 22,900 Btu/h37% (higher)median 10,600 Btu/h
Outdoor models44
AHRI certifications44

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
StandardAOKOLCoast Air
CEE 2025 Tier 1 (Split ASHP)100%4 models100%4 models
CEE 2026 Tier 1 (Split ASHP)100%4 models100%4 models
CEE Advanced Tier (Split ASHP)0%0 models0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)100%4 models75%3 models
DOE Cold Climate Heat Pump Challenge0%0 models0%0 models
ENERGY STAR Cold Climate100%4 models75%3 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 · 1 groups where both have models
  • AOKOL
  • Coast Air
  • All models of the group
Non-ducted, up to 1.5 tons1.953,455 modelsNon-ducted, 2 tons2.00863 modelsNon-ducted, 2.5–3 tons2.001,106 modelsNon-ducted, 3.5–4.5 tons2.00564 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 typeAOKOLCoast Air
Non-ducted, up to 1.5 tons1 · index 72%3 · index 70%
Non-ducted, 2.5–3 tons2 · index 58%None
Non-ducted, 3.5–4.5 tons1 · index 42%None
Non-ducted, 2 tonsNone1 · index 56%

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 typeAOKOLCold-climate score, best modelCoast AirCold-climate score, best model
Non-ducted, up to 1.5 tons68.6(50 is the typical model of its size class)AOODU-1D2S1 of 1 models qualify · AHRI 21749678873.1(50 is the typical model of its size class) (higher)A-CAD18-1Bwith ductless indoor unit B-CAD18-1B3 of 3 models qualify · AHRI 217187391
Non-ducted, 2 tonsNo models in this size classNone on this board (0 of 1 models qualify)
Non-ducted, 2.5–3 tons57.5(50 is the typical model of its size class)AOODU-1D3S2 of 2 models qualify · AHRI 217496789No models in this size class
Non-ducted, 3.5–4.5 tons31.2(50 is the typical model of its size class)AOODU-1D5S1 of 1 models qualify · AHRI 217496791No 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 typeAOKOLAll-around score, best modelCoast AirAll-around score, best model
Non-ducted, up to 1.5 tons72.2(50 is the typical model of its size class)AOODU-1D2S1 of 1 models have all five ratings · AHRI 21749678875.6(50 is the typical model of its size class) (higher)A-CAD09-0Bwith ductless indoor unit B-CAD09-0B3 of 3 models have all five ratings · AHRI 217187389
Non-ducted, 2 tonsNo models in this size class56.2(50 is the typical model of its size class)A-CAD24-1Bwith ductless indoor unit B-CAD24-1B1 of 1 models have all five ratings · AHRI 217187392
Non-ducted, 2.5–3 tons65.1(50 is the typical model of its size class)AOODU-1D3S2 of 2 models have all five ratings · AHRI 217496789No models in this size class
Non-ducted, 3.5–4.5 tons42.4(50 is the typical model of its size class)AOODU-1D5S1 of 1 models have all five ratings · AHRI 217496791No 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
RatingAOKOLCoast Air
COP at 5°Fbeats 63% · 2.00AOODU-1D2SNon-ducted, up to 1.5 tonsbeats 98% · 2.44A-CAD18-1BNon-ducted, up to 1.5 tons
Capacity retention at 5°Fbeats 61% · 80%AOODU-1D2SNon-ducted, up to 1.5 tonsbeats 38% · 73%A-CAD09-0BNon-ducted, up to 1.5 tons
HSPF2beats 80% · 10.5AOODU-1D3SNon-ducted, 2.5–3 tonsbeats 88% · 11.5A-CAD09-0BNon-ducted, up to 1.5 tons
SEER2beats 91% · 24.0AOODU-1D3SNon-ducted, 2.5–3 tonsbeats 71% · 22.7A-CAD24-1BNon-ducted, 2 tons
EER2beats 70% · 13.0AOODU-1D2SNon-ducted, up to 1.5 tonsbeats 83% · 14.0A-CAD09-0BNon-ducted, up to 1.5 tons
Heating capacity at 5°Fbeats 88% · 16,000 Btu/hAOODU-1D2SNon-ducted, up to 1.5 tonsbeats 73% · 12,800 Btu/hA-CAD18-1BNon-ducted, up to 1.5 tons

More comparisons

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