Electric tankless water heater has a number of advantages over the conventional water tank heaters. With a tankless heater, you will have the water on demand. It means that no energy will be used to maintain the temperature in the tank. The water will only be heated when you need it.
IMPORTANT: These water heaters require 240V electrical service.
Whole house electric tankless water heaters with 20+ KW power
Ecosmart ECO 27Amazon BESTSELLER. 27KW Watersense certified. Depending on incoming water temperature, handles 3 to 6 gallons per minute.Stiebel Eltron Tempra 29 PlusMost technologically advanced. Provides constant temperature output irrespective of the water demand.Stiebel Eltron Tempra 36 PlusWill satisfy even a big family needs for constant temperature hot water.
Apart of that, they save a lot of useful space. No large water tanks used here.
You will have a constant flow of hot water as long as you require it. It will no longer depend on the size of the tank.