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Coast Air vs Live cool heat pumps

Measured against models of the same size and duct type, Coast Air and Live cool split the 6 ratings 3–3. Coast Air has 4 outdoor models, Live cool has 10 outdoor models. Coast Air and Live cool 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.
Coast Air and Live cool 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, Coast Air and Live cool split the 6 ratings 3–3.
  • Coast Air
  • Live cool
  • Other ranked manufacturers
Coast AirLive cool

Source: AHRI Directory, NEEP · as of

Average peer percentile, raw median and rank among ranked manufacturers
RatingCoast AirLive cool
Efficiency index67% (higher)median —57% (higher)median —
COP at 5°F76% (higher)median 2.1344% (higher)median 1.84
Capacity retention at 5°F29%median 71%37%median 72%
HSPF275% (higher)median 10.957% (higher)median 10.0
SEER272%median 23.174%median 23.0
EER275% (higher)median 13.263% (higher)median 13.0
Heating capacity at 5°F37%median 10,600 Btu/h47%median 9,100 Btu/h
Outdoor models410
AHRI certifications410

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
StandardCoast AirLive cool
CEE 2025 Tier 1 (Split ASHP)100%4 models100%10 models
CEE 2026 Tier 1 (Split ASHP)100%4 models100%10 models
CEE Advanced Tier (Split ASHP)0%0 models0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)75%3 models100%10 models
DOE Cold Climate Heat Pump Challenge0%0 models0%0 models
ENERGY STAR Cold Climate75%3 models90%9 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 · 2 groups where both have models
  • Coast Air
  • Live cool
  • All models of the group
Non-ducted, up to 1.5 tons1.953,455 modelsNon-ducted, 2 tons2.00863 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 typeCoast AirLive cool
Non-ducted, up to 1.5 tons3 · index 70%8 · index 59%
Non-ducted, 2 tons1 · index 56%2 · index 49%

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 typeCoast AirCold-climate score, best modelLive coolCold-climate score, best model
Non-ducted, up to 1.5 tons73.1(50 is the typical model of its size class) (higher)A-CAD18-1Bwith ductless indoor unit B-CAD18-1B3 of 3 models qualify · AHRI 21718739159.5(50 is the typical model of its size class)KWSM-12IR454BHS24Rwith ductless indoor unit LWSM-12IR454BHS24RAlso listed as LWSM-12IR454BHS24R8 of 8 models qualify · AHRI 217617840
Non-ducted, 2 tonsNone on this board (0 of 1 models qualify)37.7(50 is the typical model of its size class)KWSM-24IR454BHS23Rwith ductless indoor unit LWSM-24IR454BHS23RAlso listed as LWSM-24IR454BHS23R2 of 2 models qualify · AHRI 217617842

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 typeCoast AirAll-around score, best modelLive coolAll-around score, best model
Non-ducted, up to 1.5 tons75.6(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 21718738967.7(50 is the typical model of its size class)KWSM-12IR454BHS24Rwith ductless indoor unit LWSM-12IR454BHS24RAlso listed as LWSM-12IR454BHS24R8 of 8 models have all five ratings · AHRI 217617840
Non-ducted, 2 tons56.2(50 is the typical model of its size class) (higher)A-CAD24-1Bwith ductless indoor unit B-CAD24-1B1 of 1 models have all five ratings · AHRI 21718739248.8(50 is the typical model of its size class)KWSM-24IR454BHS23Rwith ductless indoor unit LWSM-24IR454BHS23RAlso listed as LWSM-24IR454BHS23R2 of 2 models have all five ratings · AHRI 217617842

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
RatingCoast AirLive cool
COP at 5°Fbeats 98% · 2.44A-CAD18-1BNon-ducted, up to 1.5 tonsbeats 77% · 2.10KWSM-12IR454BHS23LRAlso listed as LWSM-12IR454BHS23LRNon-ducted, up to 1.5 tons
Capacity retention at 5°Fbeats 38% · 73%A-CAD09-0BNon-ducted, up to 1.5 tonsbeats 52% · 76%KWSM-24IR454BHS23RAlso listed as LWSM-24IR454BHS23RNon-ducted, 2 tons
HSPF2beats 88% · 11.5A-CAD09-0BNon-ducted, up to 1.5 tonsbeats 64% · 10.0KWSM-12IR454BHS23LRAlso listed as LWSM-12IR454BHS23LRNon-ducted, up to 1.5 tons
SEER2beats 71% · 22.7A-CAD24-1BNon-ducted, 2 tonsbeats 79% · 23.0KWSM-24IR454BHS23RAlso listed as LWSM-24IR454BHS23RNon-ducted, 2 tons
EER2beats 83% · 14.0A-CAD09-0BNon-ducted, up to 1.5 tonsbeats 70% · 13.0KWSM-12IR454BHS23LRAlso listed as LWSM-12IR454BHS23LRNon-ducted, up to 1.5 tons
Heating capacity at 5°Fbeats 73% · 12,800 Btu/hA-CAD18-1BNon-ducted, up to 1.5 tonsbeats 79% · 13,600 Btu/hKWSM-18IR454BHS23RAlso listed as LWSM-18IR454BHS23RNon-ducted, up to 1.5 tons

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