Lochinvar ENLB-40W 1**
Lochinvar ENLB-40W 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 ENLB-40W 1**.
Certified figures
- Storage volume
- 35gallons
- UEF
- 0.90Uniform energy factor
- First-hour rating
- 38gallonsHot water in the first hour
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| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|---|
| LES-40BW 1** | 35 | 0.90 | 38 | 98% | Low |
UEF is the uniform energy factor. A dash means the model has no such figure.
It holds 35 gallons in the test, 5 gallons less than its 40-gallon sold size. Over one hour from a full tank, it gave 38 gallons in the test (its first-hour rating). Reheating lets it give 3 gallons beyond the 35 gallons in its tank. Among 477 electric storage models, 459 have a higher first-hour rating. The median electric storage model gives 55 gallons in the first hour of the test.
In the test, 10% of its energy does not reach the hot water (UEF 0.90). In the test, daily hot water use was set to low (its draw pattern). Among 157 electric storage models on its draw pattern, 115 have a higher UEF. For its type and draw pattern, the median UEF is 0.92. The water took in 98% of the energy used to reheat it (its recovery efficiency).
There are 3 more basic models with the same test figures. Of those, one or more are under the A. O. Smith, American, and State brands. For the full group, see the A. O. Smith ENLB-40W 1**.
Also listed as
They carry every figure in the table above.
- Every Lochinvar basic model
- Every 40-gallon electric storage water heater
- Every electric storage water heater
Not covered
- Advertised figures. We have none on file for this model.