Hot Water List
Menu

AMERICAN STANDARD WATER HEATERS ENS50H*

AMERICAN STANDARD WATER HEATERS ENS50H* is in the DOE listing as of Oct 26, 2026.

It has a labeled size of 50 gallons, a certified storage volume of 45 gallons, a certified UEF of 0.92, and a certified first-hour rating of 65 gallons of hot water.

Its advertised UEF of 0.92 from AMERICAN STANDARD WATER HEATERS matches the certified 0.92 (Read Oct 5, 2026).

  • Electric storage water heater
  • 1 listed model

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

Storage volume
45gallons
UEF
0.92Uniform energy factor
First-hour rating
65gallonsHot water in the first hour
See it among every electric storage model

Advertised and certified figures

AMERICAN STANDARD WATER HEATERS ENS50H*: advertised and certified
AMERICAN STANDARD WATER HEATERS ENS50H*: advertised and certified Size: advertised 50 gal, certified 45 gal (advertised nominal size, certified storage volume). Size: advertised 45 gal, certified 45 gal (certified storage volume). UEF: advertised 0.92, certified 0.92. First-hour rating: advertised 65 gal, certified 65 gal. Size · advertised nominal size, certified storage volume Advertised 50 gal Certified 45 gal Size · certified storage volume Advertised 45 gal Certified 45 gal UEF Advertised 0.92 Certified 0.92 First-hour rating Advertised 65 gal Certified 65 gal
FigureAdvertisedCertifiedAdvertiserRead
Size 50 gal, nominal size 45 gal storage volume AMERICAN STANDARD WATER HEATERS Read Oct 5, 2026
Size 45 gal 45 gal storage volume AMERICAN STANDARD WATER HEATERS Read Oct 5, 2026
UEF 0.92 0.92 AMERICAN STANDARD WATER HEATERS Read Oct 5, 2026
First-hour rating 65 gal 65 gal AMERICAN STANDARD WATER HEATERS Read Oct 5, 2026

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
ENS50H*450.926598%Medium

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

It holds 45 gallons in the test, 5 gallons less than its 50-gallon sold size. It delivers 65 gallons of hot water in the test's first hour. Reheating lets it give 20 gallons beyond the 45 gallons in its tank. Among 477 electric storage models, 66 have a higher first-hour rating. The median electric storage model gives 55 gallons in the first hour of the test.

In the test, 8% of its energy does not reach the hot water (UEF 0.92). Its test simulated a day of medium hot water use (its draw pattern). Of 297 electric storage models with the same draw pattern, 81 have a higher UEF and 2 a lower one. Its UEF is the median for its type and draw pattern. The water took in 98% of the energy used to reheat it (its recovery efficiency).

All of its test figures are shared by 2 other basic models. Those basic models are sold with Ariston and Lennox as their brand names.

Also listed as

They carry every figure in the table above.

Updated Oct 26, 2026 · Methodology

Not covered

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