GSI heat pump efficiency: 6 outdoor models compared

GSI has 6 heat pump outdoor models certified with this refrigerant group, in 8 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 GSI makes. GSI 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: 6
AHRI certifications: 8
Efficiency index: 48%; Typical model vs same-size, same-type peers (6 models)
Meet CEE 2025: 33.3%; 2 models

How GSI 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.

GSI against every ranked manufacturerPeer scores, 0–100 · grey ticks: each ranked manufacturer · shaded: the middle half of GSI’s own modelsGSI is strongest on HSPF2 (its typical model beats 78% of comparable models) and weakest on EER2 (24%).

GSI
Middle half of its models
Other ranked manufacturers

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

Average peer percentile of GSI’s models
Rating	Beats comparable models	Rank	Raw median
Efficiency index6 models scored	48%	Not ranked	—
COP at 5°F6 models scored	48%	Not ranked	1.93
Capacity retention at 5°F6 models scored	70%	Not ranked	81%
HSPF26 models scored	78%	Not ranked	9.6
SEER26 models scored	37%	Not ranked	15.4
EER26 models scored	24%	Not ranked	10.3
Heating capacity at 5°F6 models scored	77%	Not ranked	29,500 Btu/h

Standards met

Share of GSI’s models with at least one qualifying certification
Standard	Share	Models
CEE 2025 Tier 1 (Split ASHP)	33.3%	2
CEE 2026 Tier 1 (Split ASHP)	33.3%	2
CEE Advanced Tier (Split ASHP)	0%	0
Xcel Energy Colorado cold-climate ASHP (2025)	66.7%	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.

GSI’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

GSI (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
Ducted, up to 1.5 tons	1	52%	76%	58%	37%
Ducted, 2 tons	1	53%	50%	84%	53%
Ducted, 2.5–3 tons	2	53%	56%	91%	41%
Ducted, 3.5–4.5 tons	2	38%	25%	71%	26%

Every GSI model in the market

GSI’s 6 models with a known size and duct type, over the shape of the whole catalog.

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

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

Dots: 6 gsi 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 GSI 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 5 GSI 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
1SOE31U-36HFN1-MGSIwith ducted air handler SAC-36HWDN1-MN0	3 tons35,000 Btu/h · Ducted	82%	2.00	10.0	32,000	15.2	Xcel	2	214056543	Ducted, 2.5–3 tons	78.6
2SOD30U-30HFN1-MR0(X)GSIwith ducted air handler SAC-36HWDN1-MN0	2.5 tons30,000 Btu/h · Ducted	82%	1.85	9.7	27,000	15.5	Xcel	1	214056541	Ducted, 2.5–3 tons	67.8
3SOD30-24HFN1-MWGSIwith ducted air handler SVBM-24A18T3N1	2 tons24,000 Btu/h · Ducted	80%	2.00	9.8	20,000	16.1	CEE 25CEE 26Xcel	2	214056539	Ducted, 2 tons	65.5
4SOX430U-18HFN1-MGSIwith ducted air handler SAC-24HWDN1-MN0	1.5 tons18,000 Btu/h · Ducted	79%	2.20	9.5	15,000	16.1	CEE 25CEE 26Xcel	1	214056538	Ducted, up to 1.5 tons	63.7
5SOE30U-55HFN1-MGSIwith ducted air handler SAC-60HWDN1-MN0	4.5 tons53,000 Btu/h · Ducted	85%	1.80	8.6	46,500	14.5	None	1	214056545	Ducted, 3.5–4.5 tons	58.3

All-around best

Top 5 GSI 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
1SOD30-24HFN1-MWGSIwith ducted air handler SVBM-24A18T3N1	2 tons24,000 Btu/h · Ducted	80%	2.00	9.8	16.1	10.7	CEE 25CEE 26Xcel	2	214056539	Ducted, 2 tons	53.2	65.5	41.0	65.5
2SOE31U-36HFN1-MGSIwith ducted air handler SAC-36HWDN1-MN0	3 tons35,000 Btu/h · Ducted	82%	2.00	10.0	15.2	10.0	Xcel	2	214056543	Ducted, 2.5–3 tons	53.0	78.6	27.3	78.6
3SOD30U-30HFN1-MR0(X)GSIwith ducted air handler SAC-36HWDN1-MN0	2.5 tons30,000 Btu/h · Ducted	82%	1.85	9.7	15.5	10.5	Xcel	1	214056541	Ducted, 2.5–3 tons	52.6	67.8	37.4	67.8
4SOX430U-18HFN1-MGSIwith ducted air handler SAC-24HWDN1-MN0	1.5 tons18,000 Btu/h · Ducted	79%	2.20	9.5	16.1	11.7	CEE 25CEE 26Xcel	1	214056538	Ducted, up to 1.5 tons	51.6	63.7	39.5	63.7
5SOE30U-55HFN1-MGSIwith ducted air handler SAC-60HWDN1-MN0	4.5 tons53,000 Btu/h · Ducted	85%	1.80	8.6	14.5	8.6	None	1	214056545	Ducted, 3.5–4.5 tons	39.7	58.3	21.0	58.3

Best model on each rating

GSI’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	SOX430U-18HFN1-M	2.20	Ducted, up to 1.5 tons	76%	214056538
Capacity retention at 5°F	SOE30U-55HFN1-M	85%	Ducted, 3.5–4.5 tons	79%	214056545
HSPF2	SOE31U-36HFN1-M	10.0	Ducted, 2.5–3 tons	93%	214056543
SEER2	SOD30-24HFN1-MW	16.5	Ducted, 2 tons	48%	214056540
EER2	SOX430U-18HFN1-M	11.7	Ducted, up to 1.5 tons	36%	214056538
Heating capacity at 5°F	SOE30U-55HFN1-M	46,500 Btu/h	Ducted, 3.5–4.5 tons	89%	214056545

All 6 GSI models in Explore

GSI 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.

GSI: 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
Ducted, up to 1.5 tons	63.7(50 is the typical model of its size class)SOX430U-18HFN1-Mwith ducted air handler SAC-24HWDN1-MN01 of 1 models qualify · AHRI 214056538	51.6(50 is the typical model of its size class)SOX430U-18HFN1-Mwith ducted air handler SAC-24HWDN1-MN01 of 1 models have all five ratings · AHRI 214056538
Ducted, 2 tons	65.5(50 is the typical model of its size class)SOD30-24HFN1-MWwith ducted air handler SVBM-24A18T3N11 of 1 models qualify · AHRI 214056539	53.2(50 is the typical model of its size class)SOD30-24HFN1-MWwith ducted air handler SVBM-24A18T3N11 of 1 models have all five ratings · AHRI 214056539
Ducted, 2.5–3 tons	78.6(50 is the typical model of its size class)SOE31U-36HFN1-Mwith ducted air handler SAC-36HWDN1-MN02 of 2 models qualify · AHRI 214056543	53.0(50 is the typical model of its size class)SOE31U-36HFN1-Mwith ducted air handler SAC-36HWDN1-MN02 of 2 models have all five ratings · AHRI 214056543
Ducted, 3.5–4.5 tons	58.3(50 is the typical model of its size class)SOE30U-55HFN1-Mwith ducted air handler SAC-60HWDN1-MN02 of 2 models qualify · AHRI 214056545	39.7(50 is the typical model of its size class)SOE30U-55HFN1-Mwith ducted air handler SAC-60HWDN1-MN02 of 2 models have all five ratings · AHRI 214056545

All-around board, every manufacturer

Newest GSI certifications

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

The 5 most recently certified GSI outdoor models
Outdoor model	Size · type	COP@5°F	Cap. 5/47	HSPF2	SEER2	Meets	Combos	AHRI ref.
SOE30U-55HFN1-MGSIwith ducted air handler SAC-60HWDN1-MN0	4.5 tons53,000 Btu/h · Ducted	1.80	85%	8.6	14.5	None	1	214056545
SOE30U-48HFN1-M-[X1]GSIwith ducted air handler SAC-48HWDN1-MN0	4 tons46,000 Btu/h · Ducted	1.80	78%	9.0	14.3	None	1	214056544
SOE31U-36HFN1-MGSIwith ducted air handler SAC-36HWDN1-MN0	3 tons35,000 Btu/h · Ducted	2.00	82%	10.0	15.2	Xcel	2	214056543
SOD30U-30HFN1-MR0(X)GSIwith ducted air handler SAC-36HWDN1-MN0	2.5 tons30,000 Btu/h · Ducted	1.85	82%	9.7	15.5	Xcel	1	214056541
SOD30-24HFN1-MWGSIwith ducted air handler SAC-24HWDN1-MN0	2 tons24,000 Btu/h · Ducted	1.95	80%	9.5	16.5	CEE 25CEE 26Xcel	2	214056540

Shares hardware with

Manufacturers whose models are the same equipment under another badge. About OEM families

No shared hardware found for GSI in this group.

Compare GSI

Manufacturers of a similar size, side by side.

Compare with any manufacturer

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