Meet this innovative, reliable, and efficient line of tankless water heaters. Whether you’re building your new dream home-complete with luxurious spa bath and body spray system - or simply remodeling your current home, there’s a Rinnai tankless water heater ideal for your application. And every unit comes standard with the efficiency, performance and peace of mind that makes Rinnai the #1 tankless water heater brand in the U.S. market.