Customer called us out because they are selling their home and the inspector told them they needed to replace the pipes coming from the water heaters. I got there and saw that the water heaters had dielectric unions that were all corroded. I removed them and installed some male adapters and water flexes instead so that this will not be a problem in the future. I turned the water on to the home and inspected for leaks, which none were found. I found no further issues at this time.