1986 High Efficiency Furnace?

[CNewhouse]

According to building-center.org, this Trane high-efficiency furnace was manufacture in 1986. Is that accurate? I can't remember ever seeing a 90%+ efficient furnace manufactured prior to 1990. Many thanks.

 

 

[CNewhouse]

Apparently, building-center.org has S and Z in the wrong position in their key. It's a 2001. Nothing to see here.

[Jim Katen]

You listened to your instinct. That's good. 

[Mike Lamb]

You probably know that there should be an ANSI date somewhere on the data plate. Add a couple years to that and you'll have a good idea of the manufactured date.