Hot Water List
Menu

Lochinvar ENS-30 1**

Lochinvar ENS-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 ENS-30 1**.

Storage volume
27gallons
UEF
0.89Uniform energy factor
First-hour rating
47gallonsHot water in the first hour
See it among every electric storage model

Advertised and certified figures

Lochinvar ENS-30 1**: advertised and certified
Lochinvar ENS-30 1**: advertised and certified Size: advertised 30 gal, certified 27 gal (advertised nominal size, certified storage volume). Size: advertised 27 gal, certified 27 gal (certified storage volume). UEF: advertised 0.89, certified 0.89. First-hour rating: advertised 47 gal, certified 47 gal. Size · advertised nominal size, certified storage volume Advertised 30 gal Certified 27 gal Size · certified storage volume Advertised 27 gal Certified 27 gal UEF Advertised 0.89 Certified 0.89 First-hour rating Advertised 47 gal Certified 47 gal
FigureAdvertisedCertifiedAdvertiserRead
Size 30 gal, nominal size 27 gal storage volume Lochinvar Read Oct 4, 2026
Size 27 gal 27 gal storage volume Lochinvar Read Oct 4, 2026
UEF 0.89 0.89 Lochinvar Read Oct 4, 2026
First-hour rating 47 gal 47 gal Lochinvar Read Oct 4, 2026

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
LEM-30 1**270.894798%Low

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

It holds 27 gallons in the test, 3 gallons less than its 30-gallon sold size. Over one hour from a full tank, it gave 47 gallons in the test (its first-hour rating). Its tank holds 27 gallons, so reheating adds 20 gallons during the first hour. Among 477 electric storage models, 350 have a higher first-hour rating. Among electric storage models, the median first-hour rating is 55 gallons.

In tests, 89% of the energy it uses ends up as hot water (UEF 0.89). Its test ran at the low level of daily hot water use. Its UEF is lower than that of 136 of the 157 electric storage models with its draw pattern. For its type and draw pattern, the UEF runs from 0.88 to 0.95. The water took in 98% of the energy used to reheat it (its recovery efficiency).

All of its test figures are shared by 4 other basic models. They are listed under 4 other brands, one each. For the full group, see the A. O. Smith ENS-30 1** page.

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.