When it comes to high efficiency water heaters, no one comes close to matching the expertise and innovation of A. O. Smith. Whether you need a gas, an electric, or a tankless water heater, the inventive minds at A. O. Smith have one waiting for you.

EcoSmart is leading the industry with the most talked about brand of tankless water heaters. Customers are raving about our reliability, our energy saving technology, our service and our industry leading limited lifetime warranty.