GE GE40S**DAT01
GE GE40S**DAT01 is in the DOE listing as of Oct 26, 2026.
It has a labeled size of 40 gallons, a certified storage volume of 40 gallons, a certified UEF of 0.93, and a certified first-hour rating of 63 gallons of hot water.
- Electric storage water heater
- 1 listed model
ENERGY STAR certification does not cover this type of water heater.
Certified figures
- Storage volume
- 40gallons
- UEF
- 0.93Uniform energy factor
- First-hour rating
- 63gallonsHot water in the first hour
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Change your hourCertified figures by listed model
| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|---|
| GE40S**DAT01 | 40 | 0.93 | 63 | 98% | Medium |
UEF is the uniform energy factor. A dash means the model has no such figure.
Sold as 40 gallons, it holds 40 gallons in the test. Over one hour from a full tank, it gave 63 gallons in the test (its first-hour rating). Reheating lets it give 23 gallons beyond the 40 gallons in its tank. In the first hour, 99 of the 477 electric storage models give more hot water. Among electric storage models, the median first-hour rating is 55 gallons.
In tests, 93% of the energy it uses ends up as hot water (UEF 0.93). Its test simulated a day of medium hot water use (its draw pattern). Of 297 electric storage models with the same draw pattern, 20 have a higher UEF. For its type and draw pattern, the median UEF is 0.92. When it reheats water in the test, 98% of the energy it uses ends up in the water.
- Every GE 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.