SEA BREEZE heat pump efficiency: 9 outdoor models compared

SEA BREEZE has 9 heat pump outdoor models certified with this refrigerant group, in 9 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 SEA BREEZE makes. SEA BREEZE 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: 9
AHRI certifications: 9
Efficiency index: 40%; Typical model vs same-size, same-type peers (8 models)
Meet CEE 2025: 55.6%; 5 models

How SEA BREEZE 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.

SEA BREEZE against every ranked manufacturerPeer scores, 0–100 · grey ticks: each ranked manufacturer · shaded: the middle half of SEA BREEZE’s own modelsSEA BREEZE is strongest on COP at 5°F (its typical model beats 54% of comparable models) and weakest on heating capacity at 5°F (24%).

SEA BREEZE
Middle half of its models
Other ranked manufacturers

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

Average peer percentile of SEA BREEZE’s models
Rating	Beats comparable models	Rank	Raw median
Efficiency index8 models scored	40%	Not ranked	—
COP at 5°F8 models scored	54%	Not ranked	1.93
Capacity retention at 5°F8 models scored	25%	Not ranked	62%
HSPF29 models scored	32%	Not ranked	8.7
SEER29 models scored	40%	Not ranked	20.8
EER29 models scored	37%	Not ranked	10.8
Heating capacity at 5°F8 models scored	24%	Not ranked	9,850 Btu/h

Standards met

Share of SEA BREEZE’s models with at least one qualifying certification
Standard	Share	Models
CEE 2025 Tier 1 (Split ASHP)	55.6%	5
CEE 2026 Tier 1 (Split ASHP)	55.6%	5
CEE Advanced Tier (Split ASHP)	0%	0
Xcel Energy Colorado cold-climate ASHP (2025)	22.2%	2
DOE Cold Climate Heat Pump Challenge	0%	0
ENERGY STAR Cold Climate	22.2%	2

Sizes and duct types offered

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

SEA BREEZE’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

SEA BREEZE (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	5	41%	48%	42%	48%
Non-ducted, 2 tons	1	27%	43%	37%	27%
Non-ducted, 2.5–3 tons	3	44%	73%	13%	31%

Every SEA BREEZE model in the market

SEA BREEZE’s 9 models with a known size and duct type, over the shape of the whole catalog.

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

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

Dots: 9 sea breeze 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 SEA BREEZE 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 2 SEA BREEZE 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
19H421YOMISEA BREEZE · 9H Serieswith ductless indoor unit 9H421YIMI	1 ton9,000 Btu/h · Non-ducted	70%	2.16	9.1	7,000	21.5	CEE 25CEE 26XcelES CC	1	208650692	Non-ducted, up to 1.5 tons	56.7
29H421ZOMISEA BREEZE · 9H Serieswith ductless indoor unit 9H421ZIMI	1 ton9,000 Btu/h · Non-ducted	70%	1.99	9.4	7,000	21.7	CEE 25CEE 26XcelES CC	1	208650694	Non-ducted, up to 1.5 tons	51.8

All-around best

Top 5 SEA BREEZE 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
19H421ZOMISEA BREEZE · 9H Serieswith ductless indoor unit 9H421ZIMI	1 ton9,000 Btu/h · Non-ducted	70%	1.99	9.4	21.7	12.6	CEE 25CEE 26XcelES CC	1	208650694	Non-ducted, up to 1.5 tons	55.7	51.8	59.6	51.8
29H421YOMISEA BREEZE · 9H Serieswith ductless indoor unit 9H421YIMI	1 ton9,000 Btu/h · Non-ducted	70%	2.16	9.1	21.5	12.5	CEE 25CEE 26XcelES CC	1	208650692	Non-ducted, up to 1.5 tons	54.6	56.7	52.5	56.7
330H421ZOMISEA BREEZE · 30H Serieswith ductless indoor unit 30H421ZIMI	2.5 tons30,000 Btu/h · Non-ducted	61%	1.86	8.2	21.0	12.2	CEE 25CEE 26	1	208650698	Non-ducted, 2.5–3 tons	53.1	35.7	70.5	Not a pick
412H421ZOMISEA BREEZEwith ductless indoor unit 12H421ZIMI	1 ton12,000 Btu/h · Non-ducted	67%	1.79	9.2	21.4	10.8	CEE 25CEE 26	1	208650695	Non-ducted, up to 1.5 tons	36.0	31.4	40.6	Not a pick
518H421ZOMISEA BREEZE · 18H Serieswith ductless indoor unit 18H421ZIMI	1.5 tons18,000 Btu/h · Non-ducted	62%	2.07	8.7	19.5	11.0	CEE 25CEE 26	1	208650696	Non-ducted, up to 1.5 tons	35.9	39.9	31.8	Not a pick

Best model on each rating

SEA BREEZE’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	36H421ZOMI	2.01	Non-ducted, 2.5–3 tons	87%	208650699
Capacity retention at 5°F	9H421YOMI	70%	Non-ducted, up to 1.5 tons	39%	208650692
HSPF2	9H421ZOMI	9.4	Non-ducted, up to 1.5 tons	53%	208650694
SEER2	30H421ZOMI	21.0	Non-ducted, 2.5–3 tons	65%	208650698
EER2	30H421ZOMI	12.2	Non-ducted, 2.5–3 tons	75%	208650698
Heating capacity at 5°F	18H421ZOMI	11,700 Btu/h	Non-ducted, up to 1.5 tons	63%	208650696

All 9 SEA BREEZE models in Explore

SEA BREEZE 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.

SEA BREEZE: 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	56.7(50 is the typical model of its size class)9H421YOMIwith ductless indoor unit 9H421YIMI2 of 5 models qualify · AHRI 208650692	55.7(50 is the typical model of its size class)9H421ZOMIwith ductless indoor unit 9H421ZIMI5 of 5 models have all five ratings · AHRI 208650694
Non-ducted, 2 tons	None on this board (0 of 1 models qualify)	27.2(50 is the typical model of its size class)24H421ZOMIwith ductless indoor unit 24H421ZIMI1 of 1 models have all five ratings · AHRI 208650697
Non-ducted, 2.5–3 tons	None on this board (0 of 3 models qualify)	53.1(50 is the typical model of its size class)30H421ZOMIwith ductless indoor unit 30H421ZIMI2 of 3 models have all five ratings · AHRI 208650698

All-around board, every manufacturer

Newest SEA BREEZE certifications

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

The 5 most recently certified SEA BREEZE outdoor models
Outdoor model	Size · type	COP@5°F	Cap. 5/47	HSPF2	SEER2	Meets	Combos	AHRI ref.
36H421ZOMISEA BREEZEwith ductless indoor unit 36H421ZIMI	3 tons36,000 Btu/h · Non-ducted	2.01	61%	7.8	18.0	None	1	208650699
30H421ZOMISEA BREEZE · 30H Serieswith ductless indoor unit 30H421ZIMI	2.5 tons30,000 Btu/h · Non-ducted	1.86	61%	8.2	21.0	CEE 25CEE 26	1	208650698
24H421ZOMISEA BREEZEwith ductless indoor unit 24H421ZIMI	2 tons24,000 Btu/h · Non-ducted	1.83	62%	8.6	18.5	None	1	208650697
18H421ZOMISEA BREEZE · 18H Serieswith ductless indoor unit 18H421ZIMI	1.5 tons18,000 Btu/h · Non-ducted	2.07	62%	8.7	19.5	CEE 25CEE 26	1	208650696
12H421ZOMISEA BREEZEwith ductless indoor unit 12H421ZIMI	1 ton12,000 Btu/h · Non-ducted	1.79	67%	9.2	21.4	CEE 25CEE 26	1	208650695

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Compare SEA BREEZE

Manufacturers of a similar size, side by side.

Compare with any manufacturer

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