VAUGHN THERMAL ME-40
VAUGHN THERMAL ME-40 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 Hubbell ME-40.
Certified figures
- Storage volume
- 37gallons
- 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 |
|---|---|---|---|---|---|
| ME-40 | 37 | 0.92 | 46 | 98% | Low |
UEF is the uniform energy factor. A dash means the model has no such figure.
It holds 37 gallons in the test, 3 gallons less than its 40-gallon sold size. Starting full, it gives 46 gallons of hot water in its first hour of use. Its tank holds 37 gallons, so reheating adds 9 gallons during the first hour. In the first hour, 368 of the 477 electric storage models give more hot water. Among electric storage models, the median first-hour rating is 55 gallons.
In the test, 8% of its energy does not reach the hot water (UEF 0.92). In the test, daily hot water use was set to low (its draw pattern). 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. 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. Those basic models are sold with Hubbell and VAUGHN as their brand names. You can find the whole group on the page for the Hubbell ME-40.
Also listed as
They carry every figure in the table above.
- Every VAUGHN THERMAL 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.