A propane tankless water heater costs approximately 60 percent less to operate than a standard electric unit while providing an endless flow of hot water. Because a tankless unit doesn’t need to maintain a stored water supply, it is less subject to corrosion and can reduce standby energy loss by up to 20 percent. Tankless water heaters are “on-demand” systems. When a homeowner opens a hot-water tap, the unit senses the demand and starts the heating process. The water flows through a heat exchanger, where it heats to the homeowner’s desired temperature. When the faucet is closed, the heater automatically shuts off. Tankless water heaters are priced as low as $400 plus installation, depending on size and volume of water-heating demand, and are widely available through many propane retailers and plumbing professionals. To learn more about the advantages of propane tankless water heaters, radiant floor heating and more, read our white paper, Propane as Primary Energy Source for Water Heaters.