Hubbell ME55
Hubbell ME55 is in the DOE listing as of Oct 26, 2026.
It has a labeled size of 55 gallons, a certified storage volume of 52 gallons, a certified UEF of 0.92, and a certified first-hour rating of 64 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
- 52gallons
- UEF
- 0.92Uniform energy factor
- First-hour rating
- 64gallonsHot water in the first hour
Your busiest hour
Change your hourCertified figures by listed model
| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|---|
| ME55 | 52 | 0.92 | 64 | 98% | Medium |
UEF is the uniform energy factor. A dash means the model has no such figure.
It holds 52 gallons in the test, 3 gallons less than its 55-gallon sold size. Over one hour from a full tank, it gave 64 gallons in the test (its first-hour rating). That is 12 gallons more than its tank holds, since it reheats during the hour. Of 477 electric storage models, 74 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 medium level of daily hot water use. Its UEF is lower than that of 81 of the 297 electric storage models with its draw pattern. For its type and draw pattern, its UEF sits at the median. When it reheats water in the test, 98% of the energy it uses ends up in the water.
There are 2 more basic models with the same test figures. Of those, one or more are under the VAUGHN and VAUGHN THERMAL brands.
Also listed as
They carry every figure in the table above.
- Every Hubbell basic model
- Every 50-gallon electric storage water heater
- Every electric storage water heater
Not covered
- Advertised figures. We have none on file for this model.