Hey I have a trane xe-70 unit in a house that I just bought and the unit does not have a vent pipe on it. Can I use pvc or do I have to use the regular pipe on it. It is a 1990 model. thanks
Hi, not much info on this furnace, except for a lot of questions :-). There’s a recall on this particular model (for attic installations / horizontal furnaces) – http://www.seay-inspections.com/Consolidated%20heaters.htm. From the pictures in this link and some other websites, it looks like this furnace model uses regular chimney for venting purposes.
If it has a label, check BTU input and output to get efficiency – for AFUE 90% and up you’d most likely need a PVC vent. Also, there might be furnace category listed on the label – Category I and III venting will typically use metal pipe, Category II and IV typically uses PVC pipe for venting. Before working on furnace venting, get a heating contractor to check heat exchanger – many people complain about cracks in this particular model and year.