My 12 year old hot water heater pilot light started going out about 2 to 3 times a week. Two different companies told me it was time to replace it, I agreed. Now I have a more energy efficient one. It was fine for about 2 months and now I am having the same problem. It is a propane hot water heater, does anyone know what the problem is? Is it the pipe, do I have dirt or sand in it? This is driving me nuts. Any suggestions?