We have known for a while now that our house has Poly B grey piping all over and have read that they are susceptible to leaks. Most insurance company would not cover damage caused by them (but ours do, for now). We are wondering if any one here has them replaced and if so, how much did you spend? In the hope of prolonging their life, we have lowered the water pressure and hot water temperature to recommended level. But still, we wonder if we should go ahead and replace them. The cost could be over $20,000 for the size of our house.