Whirlpool Oil Fired Furnace AGE

I need the age of a Whirlpool Oil Fired Furnace…

  • Model # NLOD112AF02
  • Serial # H621 94157


Joe, Prestons list a NLOD112(A,D)F for 1987, 140,000 btu & 79.2 afue

I hope this helps



The letter H is the decade 1980. The next digit, 6 is the year within the decade. The next two digits are the week. Thus, you have May 1986.