Came out for a leak showing up in the ceiling. Found it was due to a busted polybutelene supply line. Received approval to repair. While testing water pressure I found the water heater was from 2014 and had a leak on the tank slowly leaking into the pan. Customer elected to just replace the water heater and I replaced the supply lines at no charge. Replaced water heater, pan, and expansion tank. Tested to ensure proper function and a leak free installation.