I would want to find out where and why the loop is leaking if its not to tough to bring it up, because you want to make sure the mistake is not made again if its your mistake or if its the manufacturers mistake what to look for or lastly if its an environmental factor so you know for future use. We tell customers a loop should never leak and we install close to 50 systems per year without one leaking yet(knock on wood) All but two of ours are in the ground, one is on a floating home and one we are installing(4 systems actually one home) is on a pond.