ABCOOLAIR vs GENERALLUX STAR heat pumps

Measured against models of the same size and duct type, GENERALLUX STAR scores higher on 4 of the 6 ratings. ABCOOLAIR has 46 outdoor models, GENERALLUX STAR has 7 outdoor models. ABCOOLAIR and GENERALLUX STAR have no QMID on file and are not ranked.

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CompareData as of Oct 11, 2026updated Oct 11, 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.

ABCOOLAIR and GENERALLUX STAR 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, GENERALLUX STAR scores higher on 4 of the 6 ratings.

ABCOOLAIR
GENERALLUX STAR
Other ranked manufacturers

Source: AHRI Directory, NEEP · as of Oct 11, 2026

Average peer percentile, raw median and rank among ranked manufacturers
Rating	ABCOOLAIR	GENERALLUX STAR
Efficiency index	39%median —	58%median —
COP at 5°F	40% (higher)median 1.92	37% (higher)median 1.86
Capacity retention at 5°F	13%median 46%	69%median 82%
HSPF2	21%median 7.0	31%median 8.6
SEER2	31%median 15.2	36%median 20.5
EER2	67% (higher)median 11.4	50% (higher)median 12.7
Heating capacity at 5°F	12%median 14,800 Btu/h	68%median 11,885 Btu/h
Outdoor models	46	7
AHRI certifications	3,371	7

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	ABCOOLAIR	GENERALLUX STAR
CEE 2025 Tier 1 (Split ASHP)	6.5%3 models	57.1%4 models
CEE 2026 Tier 1 (Split ASHP)	2.2%1 models	57.1%4 models
CEE Advanced Tier (Split ASHP)	0%0 models	0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)	0%0 models	57.1%4 models
DOE Cold Climate Heat Pump Challenge	0%0 models	0%0 models
ENERGY STAR Cold Climate	0%0 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 · 0 groups where both have models

ABCOOLAIR
GENERALLUX STAR
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 11, 2026

Models per peer group · efficiency index within the group
Size and duct type	ABCOOLAIR	GENERALLUX STAR
Ducted, up to 1.5 tons	3 · index 39%	None
Ducted, 2 tons	8 · index 37%	None
Ducted, 2.5–3 tons	15 · index 39%	None
Ducted, 3.5–4.5 tons	18 · index 42%	None
Ducted, 5 tons and up	2 · index 36%	None
Non-ducted, up to 1.5 tons	None	6 · index 58%
Non-ducted, 2 tons	None	1 · index —

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	ABCOOLAIRCold-climate score, best model	GENERALLUX STARCold-climate score, best model
Ducted, up to 1.5 tons	None on this board (0 of 3 models qualify)	No models in this size class
Ducted, 2 tons	None on this board (0 of 8 models qualify)	No models in this size class
Ducted, 2.5–3 tons	None on this board (0 of 15 models qualify)	No models in this size class
Ducted, 3.5–4.5 tons	None on this board (0 of 18 models qualify)	No models in this size class
Ducted, 5 tons and up	None on this board (0 of 2 models qualify)	No models in this size class
Non-ducted, up to 1.5 tons	No models in this size class	58.2(50 is the typical model of its size class)GNS-12HCH23TO2with ductless indoor unit GNS-12HCH23TI24 of 6 models qualify · AHRI 213617768
Non-ducted, 2 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	ABCOOLAIRAll-around score, best model	GENERALLUX STARAll-around score, best model
Ducted, up to 1.5 tons	40.0(50 is the typical model of its size class)GSZB401810Awith ducted air handler CAPTA36264A+MBVC1201*-1AAlso listed as GSZM401810A3 of 3 models have all five ratings · AHRI 212836091	No models in this size class
Ducted, 2 tons	59.1(50 is the typical model of its size class)GSZC702410A*with ducted air handler AMVT30BP1400A6 of 8 models have all five ratings · AHRI 211899445	No models in this size class
Ducted, 2.5–3 tons	64.2(50 is the typical model of its size class)GSZC703610Awith ducted air handler CAPTA42304A+MBVC2001*-1A11 of 15 models have all five ratings · AHRI 211899475	No models in this size class
Ducted, 3.5–4.5 tons	68.2(50 is the typical model of its size class)GSZC704810Awith ducted air handler CAPT49614A+MBVC2001*-1A10 of 18 models have all five ratings · AHRI 211899513	No models in this size class
Ducted, 5 tons and up	51.5(50 is the typical model of its size class)GPHH56041A*2 of 2 models have all five ratings · AHRI 211899444	No models in this size class
Non-ducted, up to 1.5 tons	No models in this size class	65.0(50 is the typical model of its size class)GNS-12HCH23TO2with ductless indoor unit GNS-12HCH23TI24 of 6 models have all five ratings · AHRI 213617768
Non-ducted, 2 tons	No models in this size class	None on this board (0 of 1 models have all five ratings)

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	ABCOOLAIR	GENERALLUX STAR
COP at 5°F	beats 94% · 2.51GPHH56041A*Ducted, 5 tons and up	beats 46% · 1.89GNS-12HCH23TO2Non-ducted, up to 1.5 tons
Capacity retention at 5°F	beats 28% · 42%GPHH56041A*Ducted, 5 tons and up	beats 72% · 86%GNS-18HCH21TO2Non-ducted, up to 1.5 tons
HSPF2	beats 55% · 8.2GSZC704810A*Ducted, 3.5–4.5 tons	beats 57% · 9.5GNS-12HCH22TO1Non-ducted, up to 1.5 tons
SEER2	beats 81% · 17.2GSZC704810A*Ducted, 3.5–4.5 tons	beats 79% · 23.5GNS-12HCH23TO2Non-ducted, up to 1.5 tons
EER2	beats 92% · 12.5GSZB404810A*Ducted, 3.5–4.5 tons	beats 74% · 13.2GNS-18HCH21TO2Non-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 24% · 23,000 Btu/hGPHH56041A*Ducted, 5 tons and up	beats 88% · 15,500 Btu/hGNS-18HCH21TO2Non-ducted, up to 1.5 tons

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