The opti15 electric tankless water heater can replace a tank heater for the whole home, act as a point of use, or supplement a hybrid as a booster to extend hot water availability. With its powerful 14.5kW heating system and one-of-a-kind ultrasonic design, this water heater is engineered for energy efficiency and space savings. Expert, in-house, customer support stands behind the industry leading 25-year warranty for reliability you deserve in a product meant to last. Set it and forget it to the exact temperature you desire for endless hot water with an accuracy of 1°. The opti15 can support up to 2 bathrooms and a kitchen sink in warmer climates, or act as a point of use in colder climates. Refer to the sizing map in the images to learn more about the model that is best for you.