The temperature set on the control determines how hot the water will be when it comes out of the tap and, thus, how hot the coils become and how quickly the water moves across the coils. Tankless water heaters conserve energy by only heating the amount of water needed at a given moment and by heating the water only when it is needed.
Tankless water heaters are perfect for vacation and second homes. When you are not staying in a second home or a vacation home, it is always wise to turn off any appliances and utilities not in use. This saves money and protects your property.
Use of tankless water heaters in these second homes eliminates the risk of a leaking water heater tank, eliminates the cost of leaving the water heater running when the house is not in use, and eliminates the long wait when you do use the house while the gallons and gallons of water in the tank reach the desired temperature.