What's the age of my furnacePost created: 2016-03-16 Type of Equipment: Furnace Views: 210
This question was created on the page: https://www.furnacecompare.com/furnaces/york/diamond-90.html.
On 2016-03-16 Eric wrote:
The year and date your york furnace was manufactured can usually be determined by the serial number (which is located on the data plate). Below is a few different examples of how to determine the age of the unit.