- By Myles Kleeman
- Tags: Commercial Water Heater, Demand Duo, Rinnai
- December 20, 2017
The Demand Duo Redefines Commercial Water Heating
The Demand Duo has all of the storage that you’ll ever need and all of the power you expect from Rinnai. It’s the best commercial water heater we’ve ever seen–hands down. Between the price point, the technology, and the warranties, the Demand Duo stands in a class by itself.