Is there anyway to determine the year of a furnace from the information on the identification plate. I have some info regarding the furnace but am not sure how reliable it is as I was given it over the phone by the owner. I am looking to buy it but will not if it is more than 10 years old.
The info I have is: Honeywell HEDF605
SN 10154334
Model # 3020N40
Do any of those numbers look familiar and do any of the numbers include the year of manufacture.
Any help in identifying this unit would be appreciated.
Thanks.






