Technician Ricardo and Aaron perform one preventive heat check on a Trane gas attic application system only found the hot surface ignitor with a few weak spots and went ahead and replaced before it totally went out also recommended air sealing all of the 30 - 50 metal connection joints on the ductwork due to air leaking into attic other than the age of the system beeing 16 yrs old & need to prepare for the worst unit seems to be working no other issues found at this time have a good day