American GCF-40 1**
American GCF-40 1** is in the DOE listing as of Oct 26, 2026.
- Gas storage water heater
- 3 listed models
Not listed as ENERGY STAR certified on Oct 26, 2026.
Its figures are also listed under A. O. Smith GCF-40 1**.
Certified figures
- Storage volume
- 38gallons
- UEF
- 0.64Uniform energy factor
- First-hour rating
- 70gallonsHot water in the first hour
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| Figure | Advertised | Certified | Advertiser | Read |
|---|---|---|---|---|
| Size | 40 gal, nominal size | 38 gal storage volume | American | Read Oct 4, 2026 |
| Size | 38 gal | 38 gal storage volume | American | Read Oct 4, 2026 |
| UEF | 0.64 | 0.64 | American | Read Oct 4, 2026 |
| First-hour rating | 70 gal | 70 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 |
|---|---|---|---|---|---|
| FDG2F4040T3NVR 1** | 38 | 0.64 | 70 | 73% | Medium |
| FDG6240T403NVR 1** | 38 | 0.64 | 70 | 73% | Medium |
| FDG6240T403PVR 1*1 | 38 | 0.64 | 70 | 73% | Medium |
UEF is the uniform energy factor. A dash means the model has no such figure.
It holds 38 gallons in the test, 2 gallons less than its 40-gallon sold size. It delivers 70 gallons of hot water in the test's first hour. Reheating lets it give 32 gallons beyond the 38 gallons in its tank. In the first hour, 510 of the 763 gas storage models give more hot water. The median gas storage model gives 78 gallons in the first hour of the test.
It was not listed as ENERGY STAR certified on Oct 26, 2026. In tests, 64% of the energy it uses ends up as hot water (UEF 0.64). Its test ran at the medium level of daily hot water use. Of 288 gas storage models with the same draw pattern, 43 have a higher UEF. For its type and draw pattern, the UEF runs from 0.57 to 0.75. When it reheats water in the test, 73% of the energy it uses ends up in the water.
It is the basic model for FDG2F4040T3NVR 1**, FDG6240T403NVR 1**, and FDG6240T403PVR 1*1. Its test figures match those of 5 other basic models. Each of the 5 other brands lists one of them. You can find the whole group on the page for the A. O. Smith GCF-40 1**.
In one state, one rebate program may accept it.
Also listed as
They carry every figure in the table above.
Rebates
| Program | State | Status | Program page |
|---|---|---|---|
| Xcel Energy MINNESOTA RESIDENTIAL ENERGY EFFICIENCY PROGRAMS (gas storage, gas tankless) | MN | May qualify | Its own page |
Programs change their terms. Check the program's own page before you buy.
- Every American basic model
- Every 40-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.