Not enough hot water

[Thatguy]

What is the simplest test to determine dip tube integrity?

 

[Redwood]

What is the simplest test to determine dip tube integrity?

Knowing the age is a big plus because of the defective dip tubes back in the 90's...

Add to that the classic symptoms and we can be pretty darn sure of what we are facing.

Check an aerator and see the pieces clogging it...

But in the end the only sure 100% way is to remove the inlet nipple and see if there is a tube there...

Here is an excellent read on defective dip tubes...
http://rustylayton.com/htmlxtra/diptube.html