A. O. Smith GCN-100* 1**
A. O. Smith GCN-100* 1** is not in the current certification listing as of Oct 26, 2026.
It has a labeled size of 100 gallons, a certified storage volume of 95 gallons, a certified UEF of 0.58, and a certified first-hour rating of 120 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
- 95gallons
- UEF
- 0.58Uniform energy factor
- First-hour rating
- 120gallonsHot water in the first hour
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Change your hourProduct history
A. O. Smith GCN-100* 1** left the DOE listing between Oct 2, 2026 and Oct 17, 2026.
A. O. Smith GCN-100* 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-UT10076NV 1** | 95 | 0.58 | 120 | 74% | — |
| GCN-100* 1** | 95 | 0.58 | 120 | 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. Over one hour from a full tank, it gave 120 gallons in the test (its first-hour rating). Reheating lets it give 25 gallons beyond the 95 gallons in its tank.
In tests, 58% of the energy it uses ends up as hot water (UEF 0.58). The water took in 74% of the energy used to reheat it (its recovery efficiency).
Its 2 model numbers are G6-UT10076NV 1** and GCN-100* 1**.
Not covered
- Advertised figures. We have none on file for this model.