I have a hair salon. I started running into the issue of water going cold after few hour in a day. Thewater heater was 50 gallon and about 7 years old. I just boughtba brand new heater 80 gallon whirpool . In am running into the same. Issue.
I had the plumberb here 4 times finally he added something here and he said maybe cold water get mixed with hot water or maybe the elements are cracked . Checked everything and this ism happened again ntoday. Help.n I am about to loose my stylist at my salon if this keep happening

Why are you starting a new post? Answer the questions ask on the first post and give us some details about the installation.