The water is hot....that's the best that can be said about the Hot100. The worst part of the installation and operation is that the push button is not side to side reversible; if you have no space or if right hand side is tough to access due to other pre installed sink equipment, swiveling the entire top mounting to a left hand operation is not possible as there is no way to secure the set screw...should be a simple factory creation but ISE evidently did not think about that. In addition the operation button requires a lot of muscle to depress. So imagine squeezing your right hand between two pieces of while holding a cup under the spout with your left hand then attempting to depress the function button with a thumb or finger...not easy at all. The old 770 may not look as fashionable but certainly is more practical