AMERICAN STANDARD WATER HEATERS ENS30T-*
AMERICAN STANDARD WATER HEATERS ENS30T-* is in the DOE listing as of Oct 26, 2026.
It has a labeled size of 30 gallons, a certified storage volume of 27 gallons, a certified UEF of 0.92, and a certified first-hour rating of 41 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
- 2 listed models
ENERGY STAR certification does not cover this type of water heater.
Certified figures
- Storage volume
- 27gallons
- UEF
- 0.92Uniform energy factor
- First-hour rating
- 41gallonsHot water in the first hour
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| Figure | Advertised | Certified | Advertiser | Read |
|---|---|---|---|---|
| Size | 30 gal, nominal size | 27 gal storage volume | AMERICAN STANDARD WATER HEATERS | Read Oct 5, 2026 |
| Size | 27 gal | 27 gal storage volume | AMERICAN STANDARD WATER HEATERS | Read Oct 5, 2026 |
| UEF | 0.92 | 0.92 | AMERICAN STANDARD WATER HEATERS | Read Oct 5, 2026 |
Certified figures by listed model
| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|---|
| ENS30T-* | 27 | 0.92 | 41 | 98% | Low |
| LDS-CE-30T* | 27 | 0.92 | 41 | 98% | 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 41 gallons in the test (its first-hour rating). Its tank holds 27 gallons, so reheating adds 14 gallons during the first hour. Of 477 electric storage models, 429 give more hot water in the first hour. The median electric storage model gives 55 gallons in its first hour.
In tests, 92% of the energy it uses ends up as hot water (UEF 0.92). In the test, daily hot water use was set to low (its draw pattern). Of 157 electric storage models with the same draw pattern, 12 have a higher UEF and 76 a lower one. On its draw pattern, its UEF is also the median electric storage UEF. The water took in 98% of the energy used to reheat it (its recovery efficiency).
Its 2 model numbers are ENS30T-* and LDS-CE-30T*. There are 2 more basic models with the same test figures. The Ariston and Lennox brands list one or more of them.
Also listed as
They carry every figure in the table above.
- Every AMERICAN STANDARD WATER HEATERS basic model
- Every 30-gallon electric storage water heater
- Every electric storage water heater
Not covered
- Changes to an advertised figure after the date beside it.