2010 Rinnai Models • R75LSi / R75LSe: A major mid-range, non-condensing residential unit (indoor i or outdoor e) delivering up to 7.5 gallons per minute (GPM). • RC80HPe / RC98HPi: Early high-efficiency condensing models, with the RC98 offering up to 95% thermal efficiency for heavy household demand. • V53 / V75 Series (V53De, V75i): Compact, high-efficiency continuous-flow units designed for smaller-to-medium residential spaces and remodels. • RL75 / RL94 Series: High-efficiency non-condensing tankless units featuring digital temperature controls and adjustable maximum output limits.