The drain that carries away water condensed off your evaporator coil. Algae and biofilm clog it, then water backs up and trips the safety switch — or floods your floor.
Common symptoms
· AC stops running on humid days
· water on the floor near the indoor unit
· ceiling stain below an attic air handler
4 more hvac contractors — diagnose-on-site
These contractors don’t have a flat price for this specific repair in their published price book — they’ll diagnose on-site and send you an estimate through the app before starting any work. You approve or decline.