Hot Water Heater
I have a 12 year old Rudd electric 30 gal. hot water heater that was losing it's ablility to keep the water up to temp. (115F). I would have preferred to just install a new one but decided to replace the elements and see how that worked. I live in Florida and have had the unit on a water softener 90% of its life, I also drain the tank every year and only get a half gallon of rusty water with very little sediment and no metal fragments so I felt the tank should be in ok shape.
Well at first the new (proper sized-4500 watts) elements seemed to do better but I still ran out of hot water rather soon. So, I decided to replace the thermostats to see how that faired. The first day was really great but then it was not keeping the water hot for very long again.
I'm wondering if there is a lot of normal variation in the water temperature or is the unit supposed to keep the water at the set temp. all the time.
I Don't think there's anything left to do or replace except the entire heater itself.