Came out for water heater pilot light not staying lit. Attempted to light pilot light and was having the same problem. Tested thermocouple and confirmed voltage was in the normal range. Water heater was from 2013. Customer elected to replace the tank. Installed new 50 gallon gas water heater and tested to ensure proper function and a leak free installation. No further issue at this time. 2 year labor warranty. Thank you for choosing Chen Plumbing.