How can I determine the age of a Carrier furnace from the serial number?
https://www.howtolookatahouse.com/Blog/Entries/2020/1/how-can-i-determine-the-age-of-a-carrier-furnace-from-the-serial-number.html
WEBSunday, January 12, 2020. The third and fourth numbers of the serial number are the year of manufacture of a Carrier furnace, but the date of manufacture is often also stated nearby on the data plate. To determine other key specs of your HVAC system, see one of these other blog posts:
DA: 52 PA: 53 MOZ Rank: 2