I live part time in Palm Springs. I seem to feel there is a difference in the water there when I shower, in particular, the way it makes my hair feel. It is just not quite right. I am told it is because the water there is what they refer to as "hard" and that I can correct this by getting a water softener for my hot water heater. I have no idea what my friends refer to when they tell me this, can anyone shed any light on this, and just how complicated it might be to make this adjustment to the water heater. Please note that thisis a very small water heater, in a very compact area in a mobile home trailer park.