A. O. Smith GCN-75* 1**
A. O. Smith GCN-75* 1** is not in the current certification listing as of Oct 26, 2026.
It has a labeled size of 75 gallons, a certified storage volume of 71 gallons, a certified UEF of 0.64, and a certified first-hour rating of 102 gallons of hot water.
- Gas storage water heater
- 2 listed models
This model is not in the current certification listing as of Oct 26, 2026. It was last listed on Oct 2, 2026.
Certified figures
- Storage volume
- 71gallons
- UEF
- 0.64Uniform energy factor
- First-hour rating
- 102gallonsHot water in the first hour
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Change your hourProduct history
A. O. Smith GCN-75* 1** left the DOE listing between Oct 2, 2026 and Oct 17, 2026.
A. O. Smith GCN-75* 1** 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 |
|---|---|---|---|---|---|
| G6-US7576NV 1** | 71 | 0.64 | 102 | 76% | — |
| GCN-75* 1** | 71 | 0.64 | 102 | 76% | — |
UEF is the uniform energy factor. A dash means the model has no such figure.
It holds 71 gallons in the test, 4 gallons less than its 75-gallon sold size. Starting full, it gives 102 gallons of hot water in its first hour of use. That is 31 gallons more than its tank holds, since it reheats during the hour.
In tests, 64% of the energy it uses ends up as hot water (UEF 0.64). Of the energy spent to reheat water, 76% goes into it (its recovery efficiency).
It is sold as G6-US7576NV 1** and GCN-75* 1**.
Not covered
- Advertised figures. We have none on file for this model.