What should always be done after repairing a leak in a hot water system?

After repairing a leak in a hot water system, it is essential to monitor for further leaks. This step ensures that the repair has been effective and that there are no residual issues that could cause additional leaks in the system. Monitoring allows for early detection of potential problems that might arise from the repair, such as improper sealing or undetected damage in the surrounding area. It is a crucial practice in plumbing to ensure the reliability and efficiency of the hot water system, as ongoing leaks can lead to water damage or inefficient operation.

While informing the customer is important, it does not directly address the maintenance of the system's integrity after repairs. Replacing all affected components may not be necessary if the repair is sufficiently effective. Increasing water pressure could exacerbate any existing issues rather than resolving them. Therefore, careful observation following a repair is the most prudent course of action.