MRCOOL MTWH04538EL
MRCOOL MTWH04538EL is in the DOE listing as of Oct 19, 2026.
- Electric storage water heater
- 1 listed model
ENERGY STAR certification does not cover this type of water heater.
Its figures are also listed under Midea D38-45FI.
Certified figures
- Storage volume
- 35gallons
- UEF
- 0.92Uniform energy factor
- First-hour rating
- 54gallonsHot water in the first hour
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| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|---|
| MTWH04538EL | 35 | 0.92 | 54 | 98% | Medium |
UEF is the uniform energy factor. A dash means the model has no such figure.
It delivers 54 gallons of hot water in the test's first hour. That is 19 gallons more than its tank holds, since it reheats during the hour. Among 477 electric storage models, 239 have a higher first-hour rating. Among electric storage models, the median first-hour rating is 55 gallons.
In tests, 92% of the energy went to hot water, so its UEF is 0.92. The daily hot water use in the test, called its draw pattern, was medium. Among 297 electric storage models on its draw pattern, 81 have a higher UEF. Its UEF is the median for its type and draw pattern. The water took in 98% of the energy used to reheat it (its recovery efficiency).
There are 4 more basic models with the same test figures. The Midea and Stream 33 brands list one or more of them. For the full group, see the Midea D38-45FI page.
Also listed as
They carry every figure in the table above.
Not covered
- Advertised figures. We have none on file for this model.