I have a goodman GDS (counterflow) furnace that I will be taking to Reno to replace and old Rheem at my uncles house.
Unlike all of the upflow and horizontal furnaces I have installed over the years, this furnace does not have the vent connector on the outside of the furnace, it has the connector halfway down inside the cabinet.
I dont see anywhere in the manual where it says I cant use a single wall vent pipe inside the unit but it seems like single wall pipe would make things get too hot, circuit board, pressure switch etc. The current furnace is single wall pipe and I planned on using new single wall pipe for the install.
Can someone please give me some insight on this? Thanks.
Going to go ahead and convert all the single wall to B vent. Trying to find B vent and the proper connectors in this city is a joke. I'll probably have better luck getting what I need in Reno when I get there.
Some of the supply houses here suggested using flexible B vent but I'm not so sure I'm sold on using flexible vent material.