I have a back bathroom that has very little hot water pressure in the sink and shower head. The rest of the house has very good hot water pressure. The back bathroom hot water is very rarely. I am assuming that I have hard water build up in the pipes, how can I fix this problem ?
Thanks

If you have hot water pressure in the rest of the house I doubt that the problem's in the water heater, ( I'll show you how to flush your heater later)
Shut the water off to the bathroom sink and open up the valve. Remove the cartridge and check and clean the inlet ports. Before you button up turn the water back on to flush out the supplies. Do the same with the shower valve,




For long life and fewer troubles you should keep your heater clear of mineral build-up by FLUSHING NOT DRAINING on a regular schedule.

Attach a hose to the boiler drain at the bottom of the tank. With the pressure on, open the boiler drain and let it run until the water runs clear. You will see a spurt of red,(rust) followed by white or yellow grains,(lime or calcium carbonate). This shouldn't take more then a few minutes.

Do this monthly to keep it clear. Now flush out your hot water lines on ALL fixtures that are affected . Now pull each aerator and clean the screens. Be sure you put them back together the same way you took them out. Don't forget to flush it out every month. Your heater will thank you for it. Hope this helps and thank you for rating my answer,

Tom