The average Syracuse home with an on demand hot water heater will require considerably less energy to heat their water. Depending on the amount of water used in a day, and the energy efficiency and configuration of the appliance(s), on demand water heaters can use 50% of the energy of a conventional system. In addition, tankless water heaters take up less space in the home, are easier to repair and have a longer operational life than tank storage heaters.
On demand hot water does have its drawbacks: systems are typically more expensive upfront than conventional water heaters, and, for houses that use more than 86 gallons of hot water a day, energy efficiency for a single unit begins to drop. Tankless water heaters can produce between 2-5 gallons of hot water per minute. While this is enough to take a shower or run the dishwasher, most systems will be unable to handle both at the same time.