2016 Rinnai Series & Models • RU Series (Super-High-Efficiency Condensing): Included high-demand models like the RU199, RU160, and RUc75 / RUc65 variants. These units offered superior energy factors, multi-location hot water delivery (up to 4–6 fixtures), and Circ-Logic recirculation capability. • RL Series (High-Efficiency Plus Non-Condensing): Provided mid-to-high flow non-condensing options (such as the RL94 and RL75 series) built for standard residential applications with reliable on-demand output. • V Series (Value Non-Condensing): Compact models like the V75 and V53 designed for smaller homes, tight spaces, or remodeling projects.