Commercial Tankless Water Heaters

More Hot Water... More Savings

It’s time to give your buildings a more efficient and reliable source of hot water. Rinnai® Tankless and Demand Duo™ Hybrid Commercial Water Heating Systems supply commercial buildings with an endless supply of hot water while you save thousands in operational and life cycle costs. Designed with durable components like high-performance heat exchangers, Rinnai Tankless Water Heaters deliver performance and dependability for even the most demanding applications.

#1 for a Reason

But it’s not just performance that sets us apart. Our commitment to safety, quality and support has made us the #1 selling tankless brand in the U.S. and Canada.


From products to services and everything in-between, our dedication to exceeding even the highest expectations drives every aspect of our business. When you choose Rinnai, you’re choosing a commitment to excellence.

We’ve Got It Covered

Along with our national network of installers, our products are backed by commercial services that include application engineering and sizing, 24/7/365 tech support and direct preventive maintenance services, as well as an extensive warranty. The warranty coverage includes 6 years for the heat exchanger, 5 years parts, and 1 year labor, extended to 2 years when registered within 30 days of purchase. In other words, we’ve got you covered.