Rinnai's Demand Duo R-Series is a perfect replacement for regular-efficiency atmospheric tanks, the company notes. With the preinstalled gas swivel flex and easy connection to existing 6" B-Vent, installation is a breeze. The R-Series’ unsurpassed first-hour delivery and efficient recovery keeps pace with the demands of any industry, Rinnai says.
Product Focus: Commercial Tankless Water Heaters
Rinnai tankless water heater
November 10, 2021