Hot Water List

Chronomite water heaters

5 basic models and 8 listed models.

Certified figures by basic model

Chronomite basic models and their certified figures
Basic modelTypeUEFFlow at a 67°F rise (gal/min)Recovery efficiencyModel numbers
CM Electric tankless 0.940.798% CM-30L/240
ER Electric tankless 1.001.598% ER-60S/240
M Electric tankless 0.941.196% M-40/277
R Electric tankless 0.971.299% R-48L/240
SR Electric tankless 0.94–0.990.2–0.798–99% SR-20L/120, SR-20L/240, SR-30/240, SR-30L/120

A range means the models under one basic model differ. A dash means the model has no such figure.

Per unit of energy, its heat into water, or UEF, reaches 1.00. That UEF belongs to the ER, an electric tankless model.

Each one this brand lists is an electric tankless water heater. Without a tank, the ER gives this brand's highest flow. In the test, that flow warms by 67°F at 1.5 gallons per minute.

Of the 117 brands on this site, 49 list more model numbers than Chronomite. None of its basic model numbers turns up under another brand on this site.

Updated Oct 26, 2026 · Methodology