said by disy:Use a gallo gun
I had to look this up!
I have an air compressor and a portable air tank but haven't used it with my drain lines because...the installer put my Tee in-line AFTER the P-trap (where a clog would normally reside) and applying compressed air would then (wouldn't it) blow the mold/mildew/algae/crapola back-in to the A-coil housing.
Do y'all's drain lines always have the access port (Tee, for pouring in liquid I presume) BEFORE the p-trap?