GENERALLUX STAR heat pump efficiency: 7 outdoor models compared

GENERALLUX STAR has 7 heat pump outdoor models certified with this refrigerant group, in 7 AHRI-certified combinations. Each model is compared with models of the same size and duct type, so the scores below do not depend on which sizes GENERALLUX STAR makes. GENERALLUX STAR has no QMID (IRS Qualified Manufacturer ID) on file, so it is not ranked against other manufacturers.

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ManufacturerData as of Oct 11, 2026updated Oct 11, 2026 · sources

Outdoor models: 7
AHRI certifications: 7
Efficiency index: 58%; Typical model vs same-size, same-type peers (4 models)
Meet CEE 2025: 57.1%; 4 models

How GENERALLUX STAR compares with comparable models

For each rating: the share of same-size, same-type models that a typical model of this manufacturer beats (50% is typical), its rank, and the raw median for context. Raw medians are not comparable across manufacturers that make different sizes.

GENERALLUX STAR against every ranked manufacturerPeer scores, 0–100 · grey ticks: each ranked manufacturer · shaded: the middle half of GENERALLUX STAR’s own modelsGENERALLUX STAR is strongest on capacity retention at 5°F (its typical model beats 69% of comparable models) and weakest on HSPF2 (31%).

GENERALLUX STAR
Middle half of its models
Other ranked manufacturers

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

Average peer percentile of GENERALLUX STAR’s models
Rating	Beats comparable models	Rank	Raw median
Efficiency index4 models scored	58%	Not ranked	—
COP at 5°F4 models scored	37%	Not ranked	1.86
Capacity retention at 5°F4 models scored	69%	Not ranked	82%
HSPF27 models scored	31%	Not ranked	8.6
SEER27 models scored	36%	Not ranked	20.5
EER27 models scored	50%	Not ranked	12.7
Heating capacity at 5°F4 models scored	68%	Not ranked	11,885 Btu/h

Standards met

Share of GENERALLUX STAR’s models with at least one qualifying certification
Standard	Share	Models
CEE 2025 Tier 1 (Split ASHP)	57.1%	4
CEE 2026 Tier 1 (Split ASHP)	57.1%	4
CEE Advanced Tier (Split ASHP)	0%	0
Xcel Energy Colorado cold-climate ASHP (2025)	57.1%	4
DOE Cold Climate Heat Pump Challenge	0%	0
ENERGY STAR Cold Climate	0%	0

Sizes and duct types offered

Models per peer group, and how they score against the other models of that group.

GENERALLUX STAR’s models inside each size and duct typeShape: every model of the group · blue: the middle half of this manufacturer’s models there, median dot, 10th–90th percentile line

GENERALLUX STAR (median, middle 50%, 10th–90th)
All models of the group

Source: AHRI Directory · as of Oct 11, 2026

Share of comparable models beaten, per peer group
Size and duct type	Models	Index	COP@5°F	HSPF2	SEER2
Non-ducted, up to 1.5 tons	6	58%	37%	35%	42%
Non-ducted, 2 tons	1	—	—	8%	2%

Every GENERALLUX STAR model in the market

GENERALLUX STAR’s 7 models with a known size and duct type, over the shape of the whole catalog.

GENERALLUX STAR models by size and ratingColoured: GENERALLUX STAR · grey shapes: all 11,475 models · lines: catalog medians by size

GENERALLUX STAR models
Ducted median by size
Non-ducted median by size
Every model at each size (width = count)
Standard threshold

Dots: 7 generallux star models, each through its representative certification, in the colour of the rating shown. The grey shapes count all 11,475 models, half a ton at a time.

Show the data as a table

COP at 5°F by size and duct type (every model, by rated cooling capacity)
Duct type, size	Models	10th pct.	25th	Median	75th	90th
Ducted, 0.5 tons	175	1.70	1.85	1.90	2.10	2.26
Ducted, 1 ton	340	1.85	1.90	2.00	2.40	2.65
Ducted, 1.5 tons	789	1.75	1.85	2.00	2.20	2.55
Ducted, 2 tons	782	1.73	1.80	2.00	2.10	2.33
Ducted, 2.5 tons	735	1.71	1.80	1.90	2.09	2.48
Ducted, 3 tons	652	1.68	1.70	1.90	2.06	2.36
Ducted, 3.5 tons	641	1.61	1.80	1.95	2.20	2.50
Ducted, 4 tons	367	1.70	1.80	1.91	2.02	2.52
Ducted, 4.5 tons	544	1.70	1.80	1.91	2.08	2.34
Ducted, 5 tons	25	1.80	1.80	1.90	1.90	2.15
Non-ducted, 0.5 tons	717	1.75	1.81	1.97	2.10	2.19
Non-ducted, 1 ton	1,064	1.75	1.80	1.90	2.07	2.25
Non-ducted, 1.5 tons	886	1.80	1.80	1.87	2.07	2.21
Non-ducted, 2 tons	564	1.80	1.80	1.83	2.04	2.21
Non-ducted, 2.5 tons	275	1.80	1.81	1.84	1.86	2.03
Non-ducted, 3 tons	502	1.80	1.80	1.90	2.00	2.09
Non-ducted, 3.5 tons	70	1.82	1.83	1.90	2.00	2.28
Non-ducted, 4 tons	263	1.80	1.80	1.98	2.00	2.10
Non-ducted, 4.5 tons	103	1.77	1.77	1.80	1.97	2.02
Non-ducted, 5 tons	29	1.98	2.00	2.10	2.30	2.47

Source: AHRI Directory · as of Oct 11, 2026

Top GENERALLUX STAR models

Its top five cold-climate picks and its top five all-around models across sizes (both scores compare each model with models of its own size and duct type, so sizes compare), then, on each single rating, the model that beats the largest share of comparable models.

Cold-climate picks

Top 4 GENERALLUX STAR cold-climate picks across sizes. 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.
# · Outdoor model	Size · type	Cap. 5/47	COP@5°F	HSPF2	Btu/h @5°F	SEER2	Meets	Combos	AHRI ref.	Compared with	Score
1GNS-12HCH23TO2GENERALLUX STAR · HYPER HEATwith ductless indoor unit GNS-12HCH23TI2	1 ton12,000 Btu/h · Non-ducted	83%	1.89	9.5	10,000	23.5	CEE 25CEE 26Xcel	1	213617768	Non-ducted, up to 1.5 tons	58.2
2GNS-12HCH22TO1GENERALLUX STAR · E-starwith ductless indoor unit GNS-12HCH22TI1	1 ton12,000 Btu/h · Non-ducted	80%	1.85	9.5	9,600	21.0	CEE 25CEE 26Xcel	1	213617766	Non-ducted, up to 1.5 tons	54.9
3GNS-18HCH21TO2GENERALLUX STAR · HYPER HEATwith ductless indoor unit GNS-18HCH21TI2	1.5 tons18,000 Btu/h · Non-ducted	86%	1.80	9.5	15,500	20.5	CEE 25CEE 26Xcel	1	213617769	Non-ducted, up to 1.5 tons	51.4
4GNS-18HCH23TO1GENERALLUX STAR · E-starwith ductless indoor unit GNS-18HCH23TI1	1.5 tons18,000 Btu/h · Non-ducted	77%	1.87	8.6	13,770	22.5	CEE 25CEE 26Xcel	1	213617767	Non-ducted, up to 1.5 tons	43.2

All-around best

Top 4 GENERALLUX STAR models on the all-around score across sizes. 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.
# · Outdoor model	Size · type	Cap. 5/47	COP@5°F	HSPF2	SEER2	EER2	Meets	Combos	AHRI ref.	Compared with	Score	Heating half	Cooling half	Cold-climate score
1GNS-12HCH23TO2GENERALLUX STAR · HYPER HEATwith ductless indoor unit GNS-12HCH23TI2	1 ton12,000 Btu/h · Non-ducted	83%	1.89	9.5	23.5	12.7	CEE 25CEE 26Xcel	1	213617768	Non-ducted, up to 1.5 tons	65.0	58.2	71.7	58.2
2GNS-12HCH22TO1GENERALLUX STAR · E-starwith ductless indoor unit GNS-12HCH22TI1	1 ton12,000 Btu/h · Non-ducted	80%	1.85	9.5	21.0	13.0	CEE 25CEE 26Xcel	1	213617766	Non-ducted, up to 1.5 tons	56.8	54.9	58.7	54.9
3GNS-18HCH23TO1GENERALLUX STAR · E-starwith ductless indoor unit GNS-18HCH23TI1	1.5 tons18,000 Btu/h · Non-ducted	77%	1.87	8.6	22.5	13.0	CEE 25CEE 26Xcel	1	213617767	Non-ducted, up to 1.5 tons	56.5	43.2	69.8	43.2
4GNS-18HCH21TO2GENERALLUX STAR · HYPER HEATwith ductless indoor unit GNS-18HCH21TI2	1.5 tons18,000 Btu/h · Non-ducted	86%	1.80	9.5	20.5	13.2	CEE 25CEE 26Xcel	1	213617769	Non-ducted, up to 1.5 tons	54.7	51.4	57.9	51.4

Best model on each rating

GENERALLUX STAR’s model with the highest peer percentile on each rating, ranked by that one rating only
Rating	Model	Value	Compared with	Beats	AHRI ref.
COP at 5°F	GNS-12HCH23TO2	1.89	Non-ducted, up to 1.5 tons	46%	213617768
Capacity retention at 5°F	GNS-18HCH21TO2	86%	Non-ducted, up to 1.5 tons	72%	213617769
HSPF2	GNS-12HCH22TO1	9.5	Non-ducted, up to 1.5 tons	57%	213617766
SEER2	GNS-12HCH23TO2	23.5	Non-ducted, up to 1.5 tons	79%	213617768
EER2	GNS-18HCH21TO2	13.2	Non-ducted, up to 1.5 tons	74%	213617769
Heating capacity at 5°F	GNS-18HCH21TO2	15,500 Btu/h	Non-ducted, up to 1.5 tons	88%	213617769

All 7 GENERALLUX STAR models in Explore

GENERALLUX STAR size class by size class: cold-climate and all-around

Its best model on each board in every size and duct type it makes. Both scores are 0–100 against every model of that size class (the line on each bar is 50, the typical model there). Cold-climate picks must keep at least 70% of their heat at 5°F; the all-around score needs all five ratings and has no such bar.

GENERALLUX STAR: best cold-climate pick and best all-around model per size and duct type, with how many of its models are on each board (top 5 and 5 per class are in the snapshot)
Size and duct type	Cold-climate pickCold-climate score, best model	All-around bestAll-around score, best model
Non-ducted, up to 1.5 tons	58.2(50 is the typical model of its size class)GNS-12HCH23TO2with ductless indoor unit GNS-12HCH23TI24 of 6 models qualify · AHRI 213617768	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	None on this board (0 of 1 models qualify)	None on this board (0 of 1 models have all five ratings)

All-around board, every manufacturer

Newest GENERALLUX STAR certifications

By AHRI reference number; AHRI issues references in increasing order.

The 5 most recently certified GENERALLUX STAR outdoor models
Outdoor model	Size · type	COP@5°F	Cap. 5/47	HSPF2	SEER2	Meets	Combos	AHRI ref.
GNS-18HCH21TO2GENERALLUX STAR · HYPER HEATwith ductless indoor unit GNS-18HCH21TI2	1.5 tons18,000 Btu/h · Non-ducted	1.80	86%	9.5	20.5	CEE 25CEE 26Xcel	1	213617769
GNS-12HCH23TO2GENERALLUX STAR · HYPER HEATwith ductless indoor unit GNS-12HCH23TI2	1 ton12,000 Btu/h · Non-ducted	1.89	83%	9.5	23.5	CEE 25CEE 26Xcel	1	213617768
GNS-18HCH23TO1GENERALLUX STAR · E-starwith ductless indoor unit GNS-18HCH23TI1	1.5 tons18,000 Btu/h · Non-ducted	1.87	77%	8.6	22.5	CEE 25CEE 26Xcel	1	213617767
GNS-12HCH22TO1GENERALLUX STAR · E-starwith ductless indoor unit GNS-12HCH22TI1	1 ton12,000 Btu/h · Non-ducted	1.85	80%	9.5	21.0	CEE 25CEE 26Xcel	1	213617766
AS-24UW3SBBTU(O)GENERALLUX STARwith ductless indoor unit AS-24UW3SBBTU(I)	2 tons24,000 Btu/h · Non-ducted	—	—	8.0	16.5	None	1	206733683

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Manufacturers of a similar size, side by side.

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GENERALLUX STAR includes these brand names as listed in AHRI: GENERALLUX STAR. Standards are checked against published thresholds; program rules beyond ratings are not checked.