Hot Water List
Menu

State ENJ-30 1**

State ENJ-30 1** is in the DOE listing as of Oct 19, 2026.

  • Electric storage water heater
  • 4 listed models

ENERGY STAR certification does not cover this type of water heater.

Its figures are also listed under A. O. Smith ENJ-30 1**.

Storage volume
26gallons
UEF
0.91Uniform energy factor
First-hour rating
43gallonsHot water in the first hour
See it among every electric storage model

Advertised and certified figures

State ENJ-30 1**: advertised and certified
State ENJ-30 1**: advertised and certified Size: advertised 28 gal, certified 26 gal (advertised nominal size, certified storage volume). Size: advertised 26 gal, certified 26 gal (certified storage volume). UEF: advertised 0.91, certified 0.91. First-hour rating: advertised 43 gal, certified 43 gal. Size · advertised nominal size, certified storage volume Advertised 28 gal Certified 26 gal Size · certified storage volume Advertised 26 gal Certified 26 gal UEF Advertised 0.91 Certified 0.91 First-hour rating Advertised 43 gal Certified 43 gal
FigureAdvertisedCertifiedAdvertiserRead
Size 28 gal, nominal size 26 gal storage volume State Read Oct 4, 2026
Size 26 gal 26 gal storage volume State Read Oct 4, 2026
UEF 0.91 0.91 State Read Oct 4, 2026
First-hour rating 43 gal 43 gal State Read Oct 4, 2026

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
EN6-30-DOMS 1**260.914398%Low
EN6-30-SOMS 1**260.914398%Low
SHN-30-DOMS 1**260.914398%Low
SHN-30-SOMS 1**260.914398%Low

UEF is the uniform energy factor. A dash means the model has no such figure.

It holds 26 gallons in the test, 2 gallons less than its 28-gallon sold size. It delivers 43 gallons of hot water in the test's first hour. Its tank holds 26 gallons, so reheating adds 17 gallons during the first hour. In the first hour, 405 of the 477 electric storage models give more hot water. Among electric storage models, the median first-hour rating is 55 gallons.

In tests, 91% of the energy it uses ends up as hot water (UEF 0.91). Its test ran at the low level of daily hot water use. Its UEF is lower than that of 81 of the 157 electric storage models with its draw pattern. For its type and draw pattern, the median UEF is 0.92. When it reheats water in the test, 98% of the energy it uses ends up in the water.

A tag or quote may show any of its 4 model numbers. Its test figures match those of 4 other basic models. They are listed under 4 other brands, one each. You can find the whole group on the page for the A. O. Smith ENJ-30 1**.

Also listed as

They carry every figure in the table above.

Updated Oct 19, 2026 · Methodology

Not covered

  • Changes to an advertised figure after the date beside it.