Customer has a water heater that was not working. I got there and relit the pilot light and it lit on my first try with no issues. The heater is 9 years old and is a 40g natural gas short heater. I waited approximately 20 minutes to see if the heater would shut off again but it did not. I gave the customer an estimate to replace it if it does go out again. I found no further issues at this time.