Lochinvar ENT-50-1**
Lochinvar ENT-50-1** is in the DOE listing as of Oct 19, 2026.
- Electric storage water heater
- 3 listed models
ENERGY STAR certification does not cover this type of water heater.
Its figures are also listed under A. O. Smith ENT-50-1**.
Certified figures
- Storage volume
- 46gallons
- UEF
- 0.92Uniform energy factor
- First-hour rating
- 62gallonsHot water in the first hour
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| Figure | Advertised | Certified | Advertiser | Read |
|---|---|---|---|---|
| Size | 50 gal, nominal size | 46 gal storage volume | Lochinvar | Read Oct 4, 2026 |
| Size | 46 gal | 46 gal storage volume | Lochinvar | Read Oct 4, 2026 |
| UEF | 0.92 | 0.92 | Lochinvar | Read Oct 4, 2026 |
| First-hour rating | 62 gal | 62 gal | Lochinvar | Read Oct 4, 2026 |
Certified figures by listed model
| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|---|
| LDT-40 1** | 46 | 0.92 | 62 | 98% | Medium |
| LET-50 1** | 46 | 0.92 | 62 | 98% | Medium |
| LET-50-8 1** | 46 | 0.92 | 62 | 98% | Medium |
UEF is the uniform energy factor. A dash means the model has no such figure.
It holds 46 gallons in the test, 4 gallons less than its 50-gallon sold size. Starting full, it gives 62 gallons of hot water in its first hour of use. Its tank holds 46 gallons, so reheating adds 16 gallons during the first hour. In the first hour, 124 of the 477 electric storage models give more hot water. Among electric storage models, the median first-hour rating is 55 gallons.
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 medium (its draw pattern). Among 297 electric storage models on its draw pattern, 81 have a higher UEF. 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).
It is sold as LDT-40 1**, LET-50 1**, and LET-50-8 1**. Its test figures match those of 5 other basic models. They are listed under 5 other brands, one each. For the full group, see the A. O. Smith ENT-50-1**.
Also listed as
They carry every figure in the table above.
- Every Lochinvar basic model
- Every 50-gallon electric storage water heater
- Every electric storage water heater
Not covered
- Changes to an advertised figure after the date beside it.