I want to know how old a 373LAV036070 Bryant Day&Night forced air heater is

I want to know how old a 373LAV036070 Bryant Day&Night forced air heater is
The first 4 numbers of the serial number should be date of mgf. i.e. 1792 would be Jan 7 1992. There are separate number for the heating and A/C units. Hope this helps?

Unless Bryant Day and Night has changed their way of dating the first two numbers of the serial number is the week it was manufactured the second two numbers is the year of manufacture

Unless Bryant Day and Night has changed their way of dating the first two numbers of the serial number is the week it was manufactured the second two numbers is the year of manufacture

They have not changed their dating system. Thank you for correcting my reply!:)