Every few weeks the water in my bathroom is Brown. When this happens it's only the hot water, and its Brown everywhere except the room which as its own water heater. I am assuming I need a water heater. Am I right?

A brown tint is probably caused by iron, corrosion or rust forming in the system. It could be an iron fitting somewhere, iron pipes, corrosion in the main underground water line into the home. Check the water connection from underground.

Miocrib, have you flushed your water heater?

Part-time nailed it! The Brown comes from rust in your heater. You have that problem because you do not flush your heater. Let me show you how.
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