Bosch on demand water heaters

[DickWilson]

Don't know regarding catchments, but as long as your system pressure is sufficient, that shouldn't have any effect. My boy claims that the owners of the ones thev'e put in on the kohala side are delivering well regulated hot water. And as he says, if those folks building in Hualilai weren't happy, they sure would have made it know to him. This is why I posted this question, wanted local experience with them. He also said that they had been installing the 2700 model, rated for 2 or 3 concurrent use's.
dick wilson