Customer called in about not being able to keep pilot light on. Upon arrival, I couldn’t get pilot light to stay on. Checked mV and thermocouple could barely get to 18mV. Thermocouple needs to be replaced. Gave customer options and customer opted to go for repairs right now. Customer did express interest in tankless water heater. Went ahead and cleaned burner assembly and installed new thermocouple. Tested thermocouple several times and water heater turned on and off on command. Informed customer if they do pursue a tankless water heater replacement this year, I can credit this repair cost towards the tankless water heater install. 2 year warranty on thermocouple replacement.