Age of Lennox Boiler

I need some help with q Lennox Boiler, Model GSB8-187E, Serial # P410300151. It looks new.

Thanks!!! for your help in advance.

LENNOX: Newer units – (Serial Number) First two numbers equal manufacturing plant #, 2nd two are** year** and letter in fifth slot is month (A thru M minus I). So 5898 G 07568 would be Plant # 58, Year of MFR would be **1998 **and month would be July.

I don’t think that the serial number is much different in your case. You say it’s newer? I would surmise it’s 2003.

Thanks! Jae


Where do yo get your information on manufacture dates for heating equipment? I have a list for water heaters but can’t seem to find one for boilers and furnaces.

Preston’s is one available for purchase. Here’s a start:

Thanks Larry!