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State ENL-40 1**

State ENL-40 1** is in the DOE listing as of Oct 19, 2026.

  • Electric storage water heater
  • 2 listed models

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

Its figures are also listed under A. O. Smith ENL-40 1**.

Storage volume
35gallons
UEF
0.89Uniform energy factor
First-hour rating
50gallonsHot water in the first hour
See it among every electric storage model

Advertised and certified figures

State ENL-40 1**: advertised and certified
State ENL-40 1**: advertised and certified Size: advertised 38 gal, certified 35 gal (advertised nominal size, certified storage volume). Size: advertised 35 gal, certified 35 gal (certified storage volume). UEF: advertised 0.89, certified 0.89. First-hour rating: advertised 50 gal, certified 50 gal. Size · advertised nominal size, certified storage volume Advertised 38 gal Certified 35 gal Size · certified storage volume Advertised 35 gal Certified 35 gal UEF Advertised 0.89 Certified 0.89 First-hour rating Advertised 50 gal Certified 50 gal
FigureAdvertisedCertifiedAdvertiserRead
Size 38 gal, nominal size 35 gal storage volume State Read Oct 4, 2026
Size 35 gal 35 gal storage volume State Read Oct 4, 2026
UEF 0.89 0.89 State Read Oct 4, 2026
First-hour rating 50 gal 50 gal State Read Oct 4, 2026

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
EN6-40-DOLS 1**350.895098%Low
EN6-40-SOLS 1**350.895098%Low

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

It holds 35 gallons in the test, 3 gallons less than its 38-gallon sold size. It delivers 50 gallons of hot water in the test's first hour. Its tank holds 35 gallons, so reheating adds 15 gallons during the first hour. Among 477 electric storage models, 321 have a higher first-hour rating. The median electric storage model gives 55 gallons in the first hour of the test.

In tests, 89% of the energy it uses ends up as hot water (UEF 0.89). The daily hot water use in the test, called its draw pattern, was low. Among 157 electric storage models on its draw pattern, 136 have a higher UEF. On its draw pattern, the median electric storage UEF is 0.92. When it reheats water in the test, 98% of the energy it uses ends up in the water.

It is the basic model for EN6-40-DOLS 1** and EN6-40-SOLS 1**. There are 5 more basic models with the same test figures. They are listed under 5 other brands, one each. You can find the whole group on the page for the A. O. Smith ENL-40 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.