Hot Water List

eyoo water heaters

5 basic models and 5 listed models.

Certified figures by basic model

eyoo basic models and their certified figures
Basic modelTypeUEFFlow at a 67°F rise (gal/min)Recovery efficiencyModel numbers
EA65EH Gas tankless 0.823.984% EA65LH
EA65ZH Gas tankless 0.823.984% EA65LH
EO11K-W Gas tankless 0.824.784% EO11K-W
EO8K-W Gas tankless 0.823.284% EO8K-W
RA77RV Gas tankless 0.824.584% RA77RV

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

This brand's highest UEF, the energy that reaches the water for each unit used, is 0.82. At 0.82, part of the test's energy did not reach the water. Of this brand's basic models, 5 share the highest UEF, the EA65EH among them. On this site, no model under this brand is ENERGY STAR certified.

This brand's whole range is one type: gas tankless. This brand's highest tankless flow belongs to the EO11K-W. In the test, that flow warms by 67°F at 4.7 gallons per minute.

This brand's 5 model numbers rank it below 56 of the 117 brands on this site. On this site, only this brand lists these basic model numbers.

Updated Oct 17, 2026 · Methodology