Arrived onsite and met with the serv pro technician. He let us know that during the demolition someone had severed the water supply going to the water heater. They turned water off to the home and waited for us to get here. We advised before any work that once work is completed we would need to preform pressure test of the system to verify water pressure is at a safe level for us to warranty the work we did. After we did our work and restored water we tested the water pressure and got 62 psi. We then checked the thermal expansion tank to find it had failed. We recommended replacing but unfortunately the home owner is not home and was not available during this visit. Sent estimates and there is no warranty on todays work.