Ruud PROE36 S2 RH95
Ruud PROE36 S2 RH95 is in the DOE listing as of Oct 19, 2026.
- Electric storage water heater
- 2 listed models
ENERGY STAR certification does not cover this type of water heater.
Its figures are also listed under Friedrich PROE36 S2 RH95.
Certified figures
- Storage volume
- 33gallons
- UEF
- 0.92Uniform energy factor
- First-hour rating
- 46gallonsHot water in the first hour
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| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|---|
| ELDS40-FTB | 33 | 0.92 | 46 | 98% | Low |
| ELDS40-TB | 33 | 0.92 | 46 | 98% | Low |
UEF is the uniform energy factor. A dash means the model has no such figure.
It holds 33 gallons in the test, 3 gallons less than its 36-gallon sold size. Over one hour from a full tank, it gave 46 gallons in the test (its first-hour rating). That is 13 gallons more than its tank holds, since it reheats during the hour. Of 477 electric storage models, 368 give more hot water in the first hour. The median electric storage model gives 55 gallons in its first hour.
In tests, 92% of the energy it uses ends up as hot water (UEF 0.92). Its test ran at the low level of daily hot water use. Among 157 electric storage models on its draw pattern, 12 have a higher UEF. Its UEF is the median for its type and draw pattern. Of the energy spent to reheat water, 98% goes into it (its recovery efficiency).
It is the basic model for ELDS40-FTB and ELDS40-TB. All of its test figures are shared by one other basic model. That one is listed under the Friedrich brand. For the full group, see the Friedrich PROE36 S2 RH95 page.
Also listed as
They carry every figure in the table above.
- Every Ruud basic model
- Every 40-gallon electric storage water heater
- Every electric storage water heater
Not covered
- Advertised figures. We have none on file for this model.