You never realize how little you know until you buy a house.
We have tons of hot water when we shower, however after about 7 minutes the water pressure drops and the hot water diminishes, then after about another minute or two it comes back. That's weird thing #1.
Second: When in the shower, if the basement bathroom toilet is flushed, you lose hot water in the shower, however I checked the toilet tank and it is filling with cold water. What is happening to my hot water?