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Chronomite ER

Chronomite ER is in the DOE listing as of Oct 26, 2026.

It has a certified UEF of 1.00 and a certified flow of 1.5 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.

Flow at a 67°F rise
1.5gallons per minute
UEF
1.00Uniform energy factor
See it among every electric tankless model

Flow where you live

A bigger rise from colder incoming water leaves the heater with 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 1.4 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 numberUEFFlow at a 67°F rise (gal/min)Recovery efficiencyDraw pattern
ER-60S/2401.001.598%Very small

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

At a 67°F rise, its flow in the test is 1.5 gallons per minute. The median flow among electric tankless models is 0.7 gallons per minute. Among 337 electric tankless models, 53 give more flow at a 67°F rise.

In tests, 100% of the energy went to hot water, so its UEF is 1.00. The daily hot water use in the test, called its draw pattern, was very small. Among 272 electric tankless models on its draw pattern, one has a higher UEF. For its type and draw pattern, the median UEF is 0.96. Of the energy it spends heating water, 98% ends up in it (its recovery efficiency).

Updated Oct 26, 2026 · Methodology

Not covered

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