Tankless water heater is the best solution for those who prefer economy over wastefulness. If you do not want to pay an arm and a leg for hot water then you have to consider buying tankless water heater.
Tankless water heaters use heating coils to heat the water as you need it. They’re more energy-efficient than a storage tank, but provide only a limited flow of hot water per minute—about 3.5 gallons.
They’re best for people who typically aren’t drawing water for more than one use at a time—running a shower and dishwasher simultaneously.
You can use tankless gas water heater is possible only in the presence of the chimney, which is incorporated in the construction of the house according to the project. Thus tankless models are best for homes that use natural gas to heat the water.
Electric instantaneous water heaters typically have multiple power stage; on each stage, the temperature is regulated by the water flow. Models with electronic control regulate heating power in accordance with the flow and temperature of incoming water, maintaining a constant temperature of the water at the outlet.
There are instantaneous water heaters of closed and open type. Tankless heaters of the closed type can provide more outlets, while the expansion tank and the safety group are not required. Tankless water heaters of the open type can supply with hot water only one water point with a special mixer.