On Tue, 01 Nov 2016, Stormin' Norman wrote:

I would use a rotating, power, spring style snake. Used properly,
that should make it past the T.

I used this:
http://www.harborfreight.com/25-ft-d...ent-66262.html

Is there something different?

What kind of material is the pipe made from? If galvanized pipe, it
could be rusted closed, in that case, you will probably have to bite
the bullet and replace some piping.

Is it galvanized. To replace would require removing a/c ductwork. See:
http://donwiss.com/pictures/misc/T-in-drain-pipe.jpg

That looks like 2" pipe. Awfully wide to have a nearly 100% blockage.

Don. www.donwiss.com (e-mail link at home page bottom).