GSW WATER HEATERS GPDX-50L 3**
GSW WATER HEATERS GPDX-50L 3** 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 GPDX-50L 3**.
Certified figures
- Storage volume
- 48gallons
- UEF
- 0.73Uniform energy factor
- First-hour rating
- 118gallonsHot water in the first hour
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| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|---|
| G650S58N-PDV-ES2 3** | 48 | 0.73 | 118 | 82% | High |
| G650S58P-PDV-ES2 3*1 | 48 | 0.73 | 118 | 82% | High |
| G850S58N-PDV-ES2 3** | 48 | 0.73 | 118 | 82% | 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. Over one hour from a full tank, it gave 118 gallons in the test (its first-hour rating). Reheating lets it give 70 gallons beyond the 48 gallons in its tank. Among 763 gas storage models, 43 have a higher first-hour rating. The median gas storage model gives 78 gallons in its first hour.
As of Oct 26, 2026, it was not listed as ENERGY STAR certified. In tests, 73% of the energy it uses ends up as hot water (UEF 0.73). Its test simulated a day of high hot water use (its draw pattern). Its UEF is lower than that of 54 of the 434 gas storage models with its draw pattern. On its draw pattern, the median gas storage UEF is 0.66. Of the energy spent to reheat water, 82% goes into it (its recovery efficiency).
It is sold as G650S58N-PDV-ES2 3**, G650S58P-PDV-ES2 3*1, and G850S58N-PDV-ES2 3**. There are 5 more basic models with the same test figures. Each of the 5 other brands lists one of them. You can find the whole group on the page for the A. O. Smith GPDX-50L 3**.
In 2 states, 2 rebate programs 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 |
| Avista Home and small commercial: HVAC and water heating incentives (gas storage) | WA | May qualify | Its own page |
Programs change their terms. Check the program's own page before you buy.
- Every GSW WATER HEATERS 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
- Advertised figures. We have none on file for this model.