Comparison tankless water-heater vs. water-heater with tank

If you compare the two technologies directly you will see clearly why the tankless water-heater is the choice of the future ...

Health
No bacteria   in the tank			Hydro Québec's view regarding water heaters with tank: 'To reduce the risk of burns from hot tap water, the temperature setting on the water heater can be turned down. But if the temperature is set too low, bacteria may begin to grow in the tank. Even at 60 °C – the setting on most electric water heaters – an estimated 25% of all water heaters are contaminated by legionella bacteria.' View full article at Hydro Quebec
Washing foods
No harmful vapors   in the shower
No risk of burns
Economy
Energy economization			Hot water on demand makes the tankless water-heater much more economic (no heat loss)
Ecology
Insurable life time			25 years for tankless water-heater 10 years for water-heater with tank
Accumulation of waste			After 25 years (insurable lifetime of tankless water-heater): 1 tankless water-heater or 2.5 water-heaters with tank (with much more material).
Hot water
At will			The tankless water-heater offers hot water whenever you want and as much as you want
Space
Space economization			The tankless water-heater uses around 3 percent of the space a tank needs. Especially interesting for appartements ...