My hot water pressure is down. Do I suspect the tank or the hot water inlet pipes are clogged, perhaps mineral buildup (but on city water). If the latter, how is it fixed?
Check the screens on the aerators for a chalky white material. If you find it, call the manufacuture of the heater. There is a class action suit about dip tube that are disintegrating.
If the aerators are clean, then look for a clogged hot outlet pipe at the top of the water heater.