GE GE40S08DAT02
GE GE40S08DAT02 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 0.92, and a certified first-hour rating of 55 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
- 0.92Uniform energy factor
- First-hour rating
- 55gallonsHot 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 |
|---|---|---|---|---|---|
| GE40S08DAT02 | 40 | 0.92 | 55 | 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 55 gallons in the test (its first-hour rating). That is 15 gallons more than its tank holds, since it reheats during the hour. Of 477 electric storage models, 204 give more hot water in the first hour. Its first-hour rating matches the median for electric storage models.
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. 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).
- 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.