The tankless water heater can give more than I think. In the first place, I think they are not so powerful. I choose this model because I do not have a large space in my house. This model can attached on wall, with small pipes installation. I am so pleasure with this device. Before purchased it, I made a conversation with sales man who sell this device. He said that product I took can only serve one shower, and real low capacity about 2 gallons. But hey, I can use it to fill my bath tub and shower in same time.
I found this really awesome experience. I get much than I need, they are working well. Supply more than I want and price is so low. To get exactly what I talking about, You can visit vinitankless blog they are have so much informations there and click here to visit.