Since this work was done, we have been having strange problems with faucets. The one in our tub seems "sticky" or gritty at times and the flow is much less than it was. The vanity faucet in our room has a slower flow than I remember. My daughter says that the water pressure in her bathroom is higher than it was before but that it takes longer for the water to get hot. And in the kitchen, there is noticeably lower flow when the faucet handle is set to all hot than to a mixture of hot and cold.
The plumber claims that replacing the water heater shook up sediment and that the diverter (whatever that is) in our bath is probably bad -- he wants a minimum of $350 to cut into the wall and replace it.
Has anyone else ever experienced something like this?