Hot Water List

EEMAX AM004120T

EEMAX AM004120T is in the DOE listing as of Oct 26, 2026.

It has a certified UEF of 0.93 and a certified flow of 0.3 gal/min at a 67°F rise.

  • Electric tankless water heater
  • 1 listed model

ENERGY STAR certification does not cover this type of water heater.

Certified figures

Flow at a 67°F rise
0.3gallons per minute
UEF
0.93Uniform energy factor

Flow where you live

The heater gives less flow when colder incoming water needs a bigger rise.

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 0.3 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

EEMAX AM004120T: certified figures by listed model
Model numberUEFFlow at a 67°F rise (gal/min)Recovery efficiencyDraw pattern
AM004120T0.930.393%Very small

UEF is the uniform energy factor. A dash means the model has no such figure.

It heats 0.3 gallons per minute of water by 67°F in the test. The median electric tankless model heats 0.7 gallons per minute by 67°F. Its flow at a 67°F rise trails 271 of the 337 electric tankless models.

In tests, 93% of the energy it uses ends up as hot water (UEF 0.93). In the test, daily hot water use was set to very small (its draw pattern). Among 272 electric tankless models on its draw pattern, 217 have a higher UEF. For its type and draw pattern, the median UEF is 0.96. When it runs, 93% of the energy it uses reaches the water (its recovery efficiency).

All of its test figures are shared by 3 other basic models. The Fogatti, Mizudo, and Westinghouse brands list one or more of them.

Also listed as

They carry every figure in the table above.

Updated Oct 26, 2026 · Methodology

Not covered

  • Advertised figures. We have none on file for this model.