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American ENJ-30 1**

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

  • Electric storage water heater
  • 1 listed model

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

American ENJ-30 1**: advertised and certified
American 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 American Read Oct 4, 2026
Size 26 gal 26 gal storage volume American Read Oct 4, 2026
UEF 0.91 0.91 American Read Oct 4, 2026
First-hour rating 43 gal 43 gal American Read Oct 4, 2026

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
E6N-30LS 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. Over one hour from a full tank, it gave 43 gallons in the test (its first-hour rating). Reheating lets it give 17 gallons beyond the 26 gallons in its tank. In the first hour, 405 of the 477 electric storage models give more hot water. The median electric storage model gives 55 gallons in the first hour of the test.

In the test, 9% of its energy does not reach the hot water (UEF 0.91). Its test ran at the low level of daily hot water use. Of 157 electric storage models with the same draw pattern, 81 have a higher UEF. For its type and draw pattern, the UEF runs from 0.88 to 0.95. Of the energy spent to reheat water, 98% goes into it (its recovery efficiency).

Its test figures match those of 4 other basic models. Each of the 4 other brands lists one of them. For the full group, see 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.