I have three bathrooms in the house. All are recently renovated. The problem is with the middle bathroom. It looses hot water after about three minutes of running. It has a two handle fancet with a center handle diverter. It has 1/2" copper piping plumbed to it. All of the other fixtured get plenty of hot water. The tub/shower is the only problem.
I checked the seats and washers and replaced all thinking that a washer had come loose.
Any thoughts would be greatly appreciated.