Rheem’s Prestige series condensing tankless gas water heaters save water, energy and installation time. The line is equipped with performance and exclusive integrated diagnostic features, including a water-savings setting, maintenance notice setting, and hot start programming. Plus, units in this line quickly pair with the demand-based recirculation pump kit to provide instantaneous hot water at the tap. These models also have a minimum flow rate of .26 gpm and minimum activation flow rate of .40 gpm. The tankless units are compatible with 1/2” gas lines and have a built-in condensate neutralizer and low-cost PVC venting compatibility.