American GCG-50 4**
American GCG-50 4** is in the DOE listing as of Oct 26, 2026.
- Gas storage water heater
- 8 listed models
Not listed as ENERGY STAR certified on Oct 26, 2026.
Its figures are also listed under A. O. Smith GCG-50 4**.
Certified figures
- Storage volume
- 48gallons
- UEF
- 0.62Uniform energy factor
- First-hour rating
- 81gallonsHot water in the first hour
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| Figure | Advertised | Certified | Advertiser | Read |
|---|---|---|---|---|
| Size | 50 gal, nominal size | 48 gal storage volume | American | Read Oct 4, 2026 |
| Size | 48 gal | 48 gal storage volume | American | Read Oct 4, 2026 |
| UEF | 0.62 | 0.62 | American | Read Oct 4, 2026 |
| First-hour rating | 81 gal | 81 gal | American | Read Oct 4, 2026 |
Certified figures by listed model
| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|---|
| G101-50T40R 4** | 48 | 0.62 | 81 | 79% | High |
| G101-50T40R 4*1 | 48 | 0.62 | 81 | 79% | High |
| G61-50T40R 4** | 48 | 0.62 | 81 | 79% | High |
| G61-50T40R 4*1 | 48 | 0.62 | 81 | 79% | High |
| G61-50T40RL 4** | 48 | 0.62 | 81 | 79% | High |
| G61-50T40RL 4*1 | 48 | 0.62 | 81 | 79% | High |
| G81-50T40R 4** | 48 | 0.62 | 81 | 79% | High |
| G81-50T40R 4*1 | 48 | 0.62 | 81 | 79% | High |
UEF is the uniform energy factor. A dash means the model has no such figure.
It holds 48 gallons in the test, 2 gallons less than its 50-gallon sold size. Starting full, it gives 81 gallons of hot water in its first hour of use. Its tank holds 48 gallons, so reheating adds 33 gallons during the first hour. In the first hour, 295 of the 763 gas storage models give more hot water. The median gas storage model gives 78 gallons in its first hour.
It was not listed as ENERGY STAR certified on Oct 26, 2026. In tests, 62% of the energy it uses ends up as hot water (UEF 0.62). Its test simulated a day of high hot water use (its draw pattern). Among 434 gas storage models on its draw pattern, 386 have a higher UEF. On its draw pattern, the median gas storage UEF is 0.66. Of the energy spent to reheat water, 79% goes into it (its recovery efficiency).
A tag or quote may show any of its 8 model numbers. Its test figures match those of 5 other basic models. Each of the 5 other brands lists one of them. For the full group, see the A. O. Smith GCG-50 4**.
Also listed as
They carry every figure in the table above.
- Every American basic model
- Every 50-gallon gas storage water heater
- Every gas storage water heater
- The most-searched gas storage models side by side
Not covered
- Changes to an advertised figure after the date beside it.