Ace Pelizon Plumbing was called out on a condensation line backing up. Upon arrival found condensation line draining into a bathroom sink vent pipe on the roof. Ace Pelizon Plumbing will need to remove old copper drain line and install a new three-quarter PVC AC condensation line. Ace Pelizon Plumbing will need to do a small Hydro jet for the bathroom sink drain line through vent from roof.