My shower faucet doesn't turn the full 180 degrees, only 90 degrees, so the water doesn't get hot enough for a shower. I know it's not the water heater because every other faucet in the house works fine. Is this an easy fix? :confused:

What brand and model faucet do you have? Most have anti scald stops inside under the handle. It may look like a toothed cam and can be adjusted but we'll know more with your model#.