We are in a new home we had built just over a year ago. We have a thumping noise whether water is on or off. We have geothermal heat & air with 2 wells. Geothermal says it is a plumbing problem, plumber does not want to help, well driller (2 wells) says it is not a well problem. We are at our wits end and do not know where to go from here. It thumps 24/7 and as close together as 2 or 3 minutes apart. Water pressure into our home from well is 64 psi at this very moment. Can you please help us.