Welcome to the Rinnai Commercial
Tankless Sizing Calculator.
Leveraging decades of global commercial water heating experience, Rinnai Tankless Water Heaters deliver performance and reliability. Precision engineering allows Rinnai Tankless Water Heaters to produce an endless supply of hot water to suit even the most demanding applications — from restaurants to hotels to multifamily residences to schools and more — conserving energy that can save thousands of dollars in capital, operational and life cycle costs, while providing redundancy and saving space.
Find out what which models are right for your application.