Hubbell MP45F
Hubbell MP45F is in the DOE listing as of Oct 26, 2026.
It has a labeled size of 45 gallons, a certified storage volume of 44 gallons, a certified UEF of 0.92, and a certified first-hour rating of 57 gallons of hot water.
- Electric storage water heater
- 1 listed model
ENERGY STAR certification does not cover this type of water heater.
Certified figures
- Storage volume
- 44gallons
- UEF
- 0.92Uniform energy factor
- First-hour rating
- 57gallonsHot water in the first hour
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| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|---|
| MP45F | 44 | 0.92 | 57 | 98% | Medium |
UEF is the uniform energy factor. A dash means the model has no such figure.
It holds 44 gallons in the test, 1 gallon less than its 45-gallon sold size. Starting full, it gives 57 gallons of hot water in its first hour of use. Its tank holds 44 gallons, so reheating adds 13 gallons during the first hour. Among 477 electric storage models, 177 have a higher first-hour rating. The median electric storage model gives 55 gallons in its first hour.
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. Of 297 electric storage models with the same draw pattern, 81 have a higher UEF. For its type and draw pattern, its UEF sits at the median. The water took in 98% of the energy used to reheat it (its recovery efficiency).
All of its test figures are shared by 2 other basic models. The VAUGHN and VAUGHN THERMAL brands list one or more of them.
Also listed as
They carry every figure in the table above.
- Every Hubbell 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.