Power bill sky high, hot water leaking. Is my overflow valve wrecked? Answered
I went to look at a friends house to see what was causing the electricity bill to be double the cost compared to last years. What I found was that the hot water cylinder was (1) turned up too hot, and, (2)is constantly trickling out of the overflow pipe.
This cylinder isn't vented through the roof, it has a pressure doohickey on the top that vents water direct to the drain outside. Is there a way to check that the pressure valve is working ok, or just get a plumber to replace it?