Eternal’s GU195S provides endless hot water and has a small reserve tank inside to maintain water pressure and avoid temperature fluctuations. It is up to 98% thermal-efficient, has a lightweight, compact design, top-mounted water connections and uses 3” PVC for venting. The GU195S is compatible with most recirculation systems to deliver instant hot water and comes with a five-year commercial no-leak warranty. Installers can use a single unit or multiple units with additional storage to accommodate large applications that have unpredictable high demand for hot water.