Using condensing technology to create a .94 Energy Factor, the Rheem Prestige Series Condensing Tankless Water Heater is the company’s most efficient tankless water heater to date. Units can vent with PVC piping, making installation faster, easier and cost-effective for contractors. Boasting a minimum flow rate of .26 gpm and a minimum activation flow rate of .40 gpm, homeowners using low-flow fixtures receive hot water without having to increase the flow. Circle 29