Rheem XG50T06EC38U1 *
Rheem XG50T06EC38U1 * 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 Rheem PROG50S-40U RH60 EC1*.
Certified figures
- Storage volume
- 48gallons
- UEF
- 0.63Uniform energy factor
- First-hour rating
- 85gallonsHot water in the first hour
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| Figure | Advertised | Certified | Advertiser | Read |
|---|---|---|---|---|
| Size | 50 gal, nominal size | 48 gal storage volume | Rheem | Read Oct 5, 2026 |
| Size | 50 gal, nominal size | 48 gal storage volume | The Home Depot | Archived copy, Sep 5, 2025 |
| UEF | 0.64 | 0.63 | The Home Depot | Archived copy, Sep 5, 2025 |
| First-hour rating | 85 gal | 85 gal | The Home Depot | Archived copy, Sep 5, 2025 |
Certified figures by listed model
| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|---|
| XG50T06EC38U1 * | 48 | 0.63 | 85 | 83% | High |
| XG50T06TC38U1 | 48 | 0.63 | 85 | 83% | High |
| XP50T06EC36U1 | 48 | 0.63 | 85 | 83% | 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 85 gallons of hot water in its first hour of use. That is 37 gallons more than its tank holds, since it reheats during the hour. Among 763 gas storage models, 192 have a higher first-hour rating. The median gas storage model gives 78 gallons in the first hour of the test.
As of Oct 26, 2026, it was not listed as ENERGY STAR certified. In tests, 63% of the energy it uses ends up as hot water (UEF 0.63). Its test ran at the high level of daily hot water use. Of 434 gas storage models with the same draw pattern, 339 have a higher UEF and 48 a lower one. For its type and draw pattern, the median UEF is 0.66. When it reheats water in the test, 83% of the energy it uses ends up in the water.
It is sold as XG50T06EC38U1 *, XG50T06TC38U1, and XP50T06EC36U1. All of its test figures are shared by 4 other basic models. Of those, one or more are under the Friedrich, Richmond, and Ruud brands. You can find the whole group on the page for the Rheem PROG50S-40U RH60 EC1*.
Also listed as
They carry every figure in the table above.
- Every Rheem 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.