Ruud G100-80N
- Gas storage water heater
- 1 listed model
This model is not in the current certification listing as of Oct 26, 2026. It was last listed on Oct 2, 2026.
Its figures are also listed under Rheem G100-80N.
Certified figures
- Storage volume
- 95gallons
- UEF
- 0.57Uniform energy factor
- First-hour rating
- 131gallonsHot water in the first hour
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Change your hourProduct history
Ruud G100-80N left the DOE listing between Oct 2, 2026 and Oct 17, 2026.
Ruud G100-80N was in the DOE listing by Oct 2, 2026.
Certified figures by listed model
| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|---|
| G100-80N | 95 | 0.57 | 131 | 74% | — |
UEF is the uniform energy factor. A dash means the model has no such figure.
It holds 95 gallons in the test, 5 gallons less than its 100-gallon sold size. Starting full, it gives 131 gallons of hot water in its first hour of use. That is 36 gallons more than its tank holds, since it reheats during the hour.
In tests, 57% of the energy it uses ends up as hot water (UEF 0.57). Of the energy spent to reheat water, 74% goes into it (its recovery efficiency).
For the full group, see the Rheem G100-80N.
Not covered
- Advertised figures. We have none on file for this model.