Eccotemp i12-NG Vertical Bundle Whole home indoor,gas powered tankless water heater, rated at 4 GPM that activates only when in use, making it an energy saver. Sleek, modern design with black tempered glass front panel. Fully automatic temperature and water flow adjustment. Fully automatic LED temperature display and controls with child locking technology. Safe electronic ignition system; plugs into standard 120v electrical outlet with UL-listed cord. Easy to read digital temperature display, on a compact and space-saving design with minimal noise output.