what temp control on the faucet? my tap water doesn't have a temp control it just has a cold knob and a hot know. how much is a inline heater?
A faucet temp control is basically a thermostatic mixing valve used for sink to prevent scalding. The lowest setting on most is about 84 degree. Ever use a public restroom with automatic faucet? Notice that the water that comes out is neither hot or cold? Well they use a mixing value to dipense water.
It's not necessary to use one but if you are going to be using quite a bit of hot water during your WC, you may want to invest in one to keep the water temperature being consistent. Such a valve will set you back about $75-$100.
