Hot water stopped working so I had a feeling it was either the thermostats or the heating elements. Tech came and replaced both thermostats when only one was faulty and said the elements were fine. $500 dollars later, the same issue arises. I look into myself and find an electric wire that was never reattached and also find out the top heating element is shorting which was the culprit the entire time. $500 dollars wasted for $30 dollars of parts and no solution. Don't waste your money.