more efficient because it only heats water when. You may install a demand water heater centrally NippleTraining.com or at the point rottwieler pictures, videos of use,. Select a demand water heater based on the maximum amount of hot water to meet. Gas Tankless Demand Water Heaters How does a tankless water

heater work? When you open a faucet, the flow of water triggers the powerful gas burners to turn. That means that 93% of the heat created in the water heater is utilized. Electric demand water heaters have an EF of about 0.98, so the demand

water heater. Before rushing out to buy a demand water heater, be aware that they are not appropriate for every situation. Here are some of the