30-gallon electric storage water heaters

95 basic models from 23 brands, in the 28-to-34-gallon group.

Basic models: 9523 brands
Advertised figures that differ from the certified figure: 14of 185Storage volume, UEF, first-hour

Difference (gal): Sold size minus storage volume. A dash means either figure is missing, a range, or not whole gallons.

For 83 of these 95 models, the size sold is larger than the measured tank volume.

Of these 95 models, 82 were tested for low hot water use. The highest efficiency (UEF) on that test is 0.94, reached by one of 82 models.

Of the 505 electric storage models on this site, 95 are in the 30-gallon group. Between them, the 95 models here carry 23 brand names.

These tanks are sold as 28 to 32 gallons. The storage volume the test measured runs from 21 to 33 gallons. In the test's first hour, these tanks deliver 29 to 60 gallons, depending on the model.

For 63 of these models, makers and stores give 185 figures for storage volume, UEF, or first-hour rating. Of those 185 figures, 14 differ from the certified figure.

Certified figures by basic model

Sorted by size, smallest first, then by UEF, highest first.

30-gallon electric storage water heaters: certified figures by basic model
Basic model	Type	Size (gal)	Storage volume (gal)	Difference (gal)	UEF	Draw pattern	First-hour rating (gal)
Friedrich PROE28 S2 RH93 SB-HO	Electric storage	28	26	+2	0.94	Medium	53
Rheem PROE28 S2 RH93 SB-HO	Electric storage	28	26	+2	0.94	Medium	53
Ruud PROE28 S2 RH93 SB-HO	Electric storage	28	26	+2	0.94	Medium	53
Friedrich PROE28 S2 RH93 SB	Electric storage	28	26	+2	0.92	Low	48
Rheem PROE28 S2 RH93 SB	Electric storage	28	26	+2	0.92	Low	48
Ruud PROE28 S2 RH93 SB	Electric storage	28	26	+2	0.92	Low	48
Friedrich PROE28 S2 RH95	Electric storage	28	25	+3	0.92	Low	45
Midea D28-45FI	Electric storage	28	26	+2	0.92	Low	45
Midea MEWH28L82S1	Electric storage	28	26	+2	0.92	Low	45
MRCOOL MEWH28L82S1	Electric storage	28	26	+2	0.92	Low	45
Rheem PROE28 S2 RH95	Electric storage	28	25	+3	0.92	Low	45
Rheem PROE28 S2 RH95 B	Electric storage	28	26	+2	0.92	Low	45
Richmond PROE28 S2 RH95	Electric storage	28	25	+3	0.92	Low	45
Richmond PROE28 S2 RH95 B	Electric storage	28	26	+2	0.92	Low	45
Ruud PROE28 S2 RH95	Electric storage	28	25	+3	0.92	Low	45
Ruud PROE28 S2 RH95 B	Electric storage	28	26	+2	0.92	Low	45
Stream 33 MEWH28L82S1	Electric storage	28	26	+2	0.92	Low	45
Bradford White RE230LN-****	Electric storage	28	26	+2	0.92	Low	41
A. O. Smith ENJ-30 1**	Electric storage	28	26	+2	0.91	Low	43
American ENJ-30 1**	Electric storage	28	26	+2	0.91	Low	43
Lochinvar ENJ-30 1**	Electric storage	28	26	+2	0.91	Low	43
RELIANCE WATER HEATERS ENJ-30 1**	Electric storage	28	26	+2	0.91	Low	43
State ENJ-30 1**	Electric storage	28	26	+2	0.91	Low	43
A. O. Smith ENJB-30 1**	Electric storage	28	26	+2	0.90	Low	47
American ENJB-30 1**	Electric storage	28	26	+2	0.90	Low	47
Lochinvar ENJB-30 1**	Electric storage	28	26	+2	0.90	Low	47
RELIANCE WATER HEATERS ENJB-30 1**	Electric storage	28	26	+2	0.90	Low	47
State ENJB-30 1**	Electric storage	28	26	+2	0.90	Low	47
A. O. Smith ENL-30 1**	Electric storage	28	26	+2	0.90	Low	44
Lochinvar ENL-30 1**	Electric storage	28	26	+2	0.90	Low	44
RELIANCE WATER HEATERS ENL-30 1**	Electric storage	28	26	+2	0.90	Low	44
State ENL-30 1**	Electric storage	28	26	+2	0.90	Low	44
U.S. Craftmaster ENL-30 1**	Electric storage	28	26	+2	0.90	Low	44
A. O. Smith ENLB-30 1**	Electric storage	28	26	+2	0.89	Low	43
American ENLB-30 1**	Electric storage	28	26	+2	0.89	Low	43
State ENLB-30 1**	Electric storage	28	26	+2	0.89	Low	43
AMERICAN STANDARD WATER HEATERS ENS30LU-*	Electric storage	29	27	+2	0.93	Low	40
GE GE30L08BAM01	Electric storage	30	26	+4	0.93	Medium	53
AMERICAN STANDARD WATER HEATERS ENS30L-*	Electric storage	30	27	+3	0.93	Low	44
Ariston ENS30L-*	Electric storage	30	27	+3	0.93	Low	44
Lennox WHES030L45SN240B****	Electric storage	30	27	+3	0.93	Low	44
Ariston ENS30LU-*	Electric storage	30	27	+3	0.93	Low	40
Lennox WHES030L45TN240S****	Electric storage	30	27	+3	0.93	Low	40
GE GE30S12BLM01	Electric storage	30	30	0	0.92	Medium	60
GE GE30T10BAM02	Electric storage	30	30	0	0.92	Medium	60
GE GE30S10BAM02	Electric storage	30	30	0	0.92	Medium	59
GE GE30S10BMM01	Electric storage	30	30	0	0.92	Medium	59
GE GE30T12BLM01	Electric storage	30	30	0	0.92	Medium	59
GE GE30T10BAM01	Electric storage	30	30	0	0.92	Medium	54
GE GE30S10BAM01	Electric storage	30	30	0	0.92	Medium	53
Lochinvar ENL-36 2**	Electric storage	30	33	−3	0.92	Medium	51
State ENL-36 2**	Electric storage	30	33	−3	0.92	Medium	51
HEAT-FLO SSL-30D	Electric storage	30	28	+2	0.92	Low	48
Midea D30-45FH	Electric storage	30	28	+2	0.92	Low	47
Midea MEWH30S82S1	Electric storage	30	28	+2	0.92	Low	47
Midea MEWH30T82S1	Electric storage	30	28	+2	0.92	Low	47
MRCOOL MEWH30S82S1	Electric storage	30	28	+2	0.92	Low	47
Rheem PROE30 2 RH95 MH	Electric storage	30	27	+3	0.92	Low	47
Stream 33 MEWH30S82S1	Electric storage	30	28	+2	0.92	Low	47
Stream 33 S33-30TEWH-4500	Electric storage	30	28	+2	0.92	Low	47
Friedrich PROE30 T2 RH95	Electric storage	30	27	+3	0.92	Low	44
Rheem PROE30 T2 RH95	Electric storage	30	27	+3	0.92	Low	44
Richmond PROE30 T2 RH95	Electric storage	30	27	+3	0.92	Low	44
Ruud PROE30 T2 RH95	Electric storage	30	27	+3	0.92	Low	44
Hubbell ME30	Electric storage	30	29	+1	0.92	Low	42
Hubbell MP30F	Electric storage	30	30	0	0.92	Low	42
VAUGHN ME30	Electric storage	30	29	+1	0.92	Low	42
VAUGHN MP30F	Electric storage	30	30	0	0.92	Low	42
VAUGHN THERMAL ME30	Electric storage	30	29	+1	0.92	Low	42
VAUGHN THERMAL MP30F	Electric storage	30	30	0	0.92	Low	42
AMERICAN STANDARD WATER HEATERS ENS30T-*	Electric storage	30	27	+3	0.92	Low	41
Ariston ENS30T-*	Electric storage	30	27	+3	0.92	Low	41
Lennox WHES030S45TN240S****	Electric storage	30	27	+3	0.92	Low	41
AMERICAN STANDARD WATER HEATERS ENS30LUB*	Electric storage	30	28	+2	0.92	Low	40
Ariston ENS30LUB*	Electric storage	30	28	+2	0.92	Low	40
Lennox WHES030L45TN240B****	Electric storage	30	28	+2	0.92	Low	40
AMERICAN STANDARD WATER HEATERS ENS30LUB 240V-3500W	Electric storage	30	27	+3	0.92	Low	35
Ariston ENS30LUB 240V-3500W	Electric storage	30	27	+3	0.92	Low	35
A. O. Smith ENSB-30 1**	Electric storage	30	27	+3	0.91	Low	50
American ENSB-30 1**	Electric storage	30	27	+3	0.91	Low	50
Lochinvar ENSB-30 1**	Electric storage	30	27	+3	0.91	Low	50
RELIANCE WATER HEATERS ENSB-30 1**	Electric storage	30	27	+3	0.91	Low	50
State ENSB-30 1**	Electric storage	30	27	+3	0.91	Low	50
A. O. Smith MHE6-30H-045D 1**	Electric storage	30	27	+3	0.90	Low	50
American MHE6-30H-045D 1**	Electric storage	30	27	+3	0.90	Low	50
State MHE6-30H-045D 1**	Electric storage	30	27	+3	0.90	Low	50
RELIANCE WATER HEATERS 6-30-EMHBS 1**	Electric storage	30	27	+3	0.90	Low	49
American ENL-30 1**	Electric storage	30	26	+4	0.90	Low	44
A. O. Smith ENS-30 1**	Electric storage	30	27	+3	0.89	Low	47
American ENS-30 1**	Electric storage	30	27	+3	0.89	Low	47
Lochinvar ENS-30 1**	Electric storage	30	27	+3	0.89	Low	47
RELIANCE WATER HEATERS ENS-30 1**	Electric storage	30	27	+3	0.89	Low	47
State ENS-30 1**	Electric storage	30	27	+3	0.89	Low	47
RELIANCE WATER HEATERS ENLB-30 1**	Electric storage	30	26	+4	0.89	Low	43
Stiebel Eltron PSH 30	Electric storage	32	21	+11	0.94	Low	29

Size is the size the model is sold as. UEF is the uniform energy factor. A UEF compares only between models with the same draw pattern. A range means the models under one basic model differ. A dash means no such figure.

More electric storage water heaters

Updated Oct 2, 2026 · Methodology

Not covered

Price, warranty, and installation.
Models whose size as sold is not known. They are on the full list.