Mizudo ET011
Mizudo ET011 is in the DOE listing as of Oct 19, 2026.
- Electric tankless water heater
- 1 listed model
ENERGY STAR certification does not cover this type of water heater.
Its figures are also listed under Fogatti ET011.
Certified figures
- Flow at a 67°F rise
- 1.2gallons per minute
- UEF
- 0.94Uniform energy factor
Your fixtures at once
Change your hour and flowFlow where you live
Colder incoming water needs a bigger rise, so the heater gives less flow.
- Cold water
- Cold water must be at least 10°F colder than the hot water setting.
- Flow estimate
- The estimate uses the lowest certified flow among the listed models. It is about 1.1 gal/min at a 70°F rise.
Flow limits
- The estimate excludes the flow needed to turn the heater on, heat lost in pipes, and installation.
- Cold water from a well or long pipe run can differ from the temperature you enter.
- Without a stated flow limit, estimates for warmer water may exceed the heater’s actual flow.
Certified figures by listed model
| Model number | UEF | Flow at a 67°F rise (gal/min) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|
| ET011A4W | 0.94 | 1.2 | 94% | Very small |
UEF is the uniform energy factor. A dash means the model has no such figure.
It heats 1.2 gallons per minute of water by 67°F in the test. The median flow among electric tankless models is 0.7 gallons per minute. Of 337 electric tankless models, 64 have a higher flow than this one.
In tests, 94% of the energy it uses ends up as hot water (UEF 0.94). In the test, daily hot water use was set to very small (its draw pattern). Among 272 electric tankless models on its draw pattern, 187 have a higher UEF. On its draw pattern, the median electric tankless UEF is 0.96. While it heats water, 94% of the energy used goes into the water (its recovery efficiency).
Its test figures match those of 3 other basic models. Those basic models are sold with Fogatti, ORBEK, and Westinghouse as their brand names. For the full group, see the Fogatti ET011 page.
Also listed as
They carry every figure in the table above.
- Every Mizudo basic model
- Every electric tankless water heater certified at 1.0 to 1.9 gallons per minute
- Every electric tankless water heater
Not covered
- Advertised figures. We have none on file for this model.