Furnace and A/c age

Please identify age, both same manufacturer

Furnace Unitary Products serial W1L1365798
A/C W1D936670

Should be within 10 years?


Unitary products manufactures a number of different brands including York, Luxaire, Coleman, and Evcon,

see style 1 at http://www.buildingcenter.org/york
You have likely transcribed the AC unit serial number incorrectly. The 4th digit is likely a 0 rather than 9