Live cool vs SLOMIN'S heat pumps

Measured against models of the same size and duct type, Live cool scores higher on 5 of the 6 ratings. Live cool has 10 outdoor models, SLOMIN'S has 10 outdoor models. Live cool and SLOMIN'S have no QMID on file and are not ranked.

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CompareData as of Oct 9, 2026updated Oct 10, 2026 · 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.

Live cool and SLOMIN'S 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, Live cool scores higher on 5 of the 6 ratings.

Live cool
SLOMIN'S
Other ranked manufacturers

Source: AHRI Directory, NEEP · as of Oct 9, 2026

Average peer percentile, raw median and rank among ranked manufacturers
Rating	Live cool	SLOMIN'S
Efficiency index	57% (higher)median —	36% (higher)median —
COP at 5°F	44% (higher)median 1.84	39% (higher)median 1.95
Capacity retention at 5°F	37%median 72%	43%median 71%
HSPF2	57% (higher)median 10.0	37% (higher)median 8.5
SEER2	74% (higher)median 23.0	45% (higher)median 19.0
EER2	63% (higher)median 13.0	17% (higher)median 10.3
Heating capacity at 5°F	47% (higher)median 9,100 Btu/h	43% (higher)median 22,900 Btu/h
Outdoor models	10	10
AHRI certifications	10	10

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	Live cool	SLOMIN'S
CEE 2025 Tier 1 (Split ASHP)	100%10 models	80%8 models
CEE 2026 Tier 1 (Split ASHP)	100%10 models	80%8 models
CEE Advanced Tier (Split ASHP)	0%0 models	0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)	100%10 models	60%6 models
DOE Cold Climate Heat Pump Challenge	0%0 models	0%0 models
ENERGY STAR Cold Climate	90%9 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 · 2 groups where both have models

Live cool
SLOMIN'S
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 9, 2026

Models per peer group · efficiency index within the group
Size and duct type	Live cool	SLOMIN'S
Ducted, 2 tons	None	1 · index 37%
Ducted, 2.5–3 tons	None	1 · index 52%
Ducted, 3.5–4.5 tons	None	2 · index 41%
Non-ducted, up to 1.5 tons	8 · index 59%	2 · index 35%
Non-ducted, 2 tons	2 · index 49%	1 · index 40%
Non-ducted, 2.5–3 tons	None	2 · index 28%
Non-ducted, 3.5–4.5 tons	None	1 · index 18%

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	Live coolCold-climate score, best model	SLOMIN'SCold-climate score, best model
Ducted, 2 tons	No models in this size class	42.5(50 is the typical model of its size class)AC2493CZwith ducted air handler AC2493AZ1 of 1 models qualify · AHRI 217563449
Ducted, 2.5–3 tons	No models in this size class	55.4(50 is the typical model of its size class)AC2495CZwith ducted air handler AC2495AZ1 of 1 models qualify · AHRI 217563450
Ducted, 3.5–4.5 tons	No models in this size class	43.2(50 is the typical model of its size class)AC2497CZwith ducted air handler AC2497AZ2 of 2 models qualify · AHRI 217563451
Non-ducted, up to 1.5 tons	59.5(50 is the typical model of its size class) (higher)KWSM-12IR454BHS24Rwith ductless indoor unit LWSM-12IR454BHS24RAlso listed as LWSM-12IR454BHS24R8 of 8 models qualify · AHRI 217617840	45.3(50 is the typical model of its size class)AC116718CZ2 of 2 models qualify · AHRI 218613084
Non-ducted, 2 tons	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	None on this board (0 of 1 models qualify)
Non-ducted, 2.5–3 tons	No models in this size class	34.7(50 is the typical model of its size class)AC116727CZ2 of 2 models qualify · AHRI 218613085
Non-ducted, 3.5–4.5 tons	No models in this size class	None on this board (0 of 1 models qualify)

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	Live coolAll-around score, best model	SLOMIN'SAll-around score, best model
Ducted, 2 tons	No models in this size class	37.2(50 is the typical model of its size class)AC2493CZwith ducted air handler AC2493AZ1 of 1 models have all five ratings · AHRI 217563449
Ducted, 2.5–3 tons	No models in this size class	51.6(50 is the typical model of its size class)AC2495CZwith ducted air handler AC2495AZ1 of 1 models have all five ratings · AHRI 217563450
Ducted, 3.5–4.5 tons	No models in this size class	43.2(50 is the typical model of its size class)AC2497CZwith ducted air handler AC2497AZ2 of 2 models have all five ratings · AHRI 217563451
Non-ducted, up to 1.5 tons	67.7(50 is the typical model of its size class) (higher)KWSM-12IR454BHS24Rwith ductless indoor unit LWSM-12IR454BHS24RAlso listed as LWSM-12IR454BHS24R8 of 8 models have all five ratings · AHRI 217617840	36.0(50 is the typical model of its size class)AC116718CZ2 of 2 models have all five ratings · AHRI 218613084
Non-ducted, 2 tons	48.8(50 is the typical model of its size class) (higher)KWSM-24IR454BHS23Rwith ductless indoor unit LWSM-24IR454BHS23RAlso listed as LWSM-24IR454BHS23R2 of 2 models have all five ratings · AHRI 217617842	40.4(50 is the typical model of its size class)AC1167Z24with ductless indoor unit AC1167Z241 of 1 models have all five ratings · AHRI 218613089
Non-ducted, 2.5–3 tons	No models in this size class	31.0(50 is the typical model of its size class)AC116727CZ2 of 2 models have all five ratings · AHRI 218613085
Non-ducted, 3.5–4.5 tons	No models in this size class	17.9(50 is the typical model of its size class)AC116742CZ1 of 1 models have all five ratings · AHRI 218613087

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	Live cool	SLOMIN'S
COP at 5°F	beats 77% · 2.10KWSM-12IR454BHS23LRAlso listed as LWSM-12IR454BHS23LRNon-ducted, up to 1.5 tons	beats 71% · 2.10AC1167Z24Non-ducted, 2 tons
Capacity retention at 5°F	beats 52% · 76%KWSM-24IR454BHS23RAlso listed as LWSM-24IR454BHS23RNon-ducted, 2 tons	beats 61% · 80%AC116718CZNon-ducted, up to 1.5 tons
HSPF2	beats 64% · 10.0KWSM-12IR454BHS23LRAlso listed as LWSM-12IR454BHS23LRNon-ducted, up to 1.5 tons	beats 65% · 9.0AC2495CZDucted, 2.5–3 tons
SEER2	beats 79% · 23.0KWSM-24IR454BHS23RAlso listed as LWSM-24IR454BHS23RNon-ducted, 2 tons	beats 82% · 19.0AC2495CZDucted, 2.5–3 tons
EER2	beats 70% · 13.0KWSM-12IR454BHS23LRAlso listed as LWSM-12IR454BHS23LRNon-ducted, up to 1.5 tons	beats 30% · 11.2AC1167Z12Non-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 79% · 13,600 Btu/hKWSM-18IR454BHS23RAlso listed as LWSM-18IR454BHS23RNon-ducted, up to 1.5 tons	beats 88% · 16,000 Btu/hAC116718CZNon-ducted, up to 1.5 tons

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