My water heater has recently started acting up. It does not heat like it use to. It only heats about half the water it usually does. I never have a problem with it turning off or the high temp switch never has to be reset. It is about 6 years old and have never had a problem with it before. I have also partially drained the water heater and the water is mostly clear but cold. What could the problem be. Mitch

It sounds like you have problem with one of the element, Check if you still have the warranty on it, if you do is best to call the manufacturer and have them send someone to fix it, good luck.

John

It will be the bottom element.