Homeowner Guide
A backed-up AC drain can stop the system, leave water near the indoor equipment, or create a musty mess before the cooling problem is obvious. The safest first move is to protect the home, note where the water is showing up, and send clear details instead of repeatedly resetting the system.
Common clues include water in the pan, a wet closet or furnace-area floor, a float switch that shuts the AC down, or a line that keeps backing up when the system runs. If water is spreading, turn cooling off at the thermostat and move anything that could be damaged.
Read the indoor water guideA drain safety switch is there to prevent water damage. If the AC comes back on and then shuts off again, or water returns quickly, keep the system off and request drain line help. Repeated cycling can hide the real symptom and make the service call harder to diagnose.
Water is not always only a clogged drain. Ice melting from the indoor coil, poor airflow, a dirty filter, or another cooling issue can also show up as water around the equipment. If the cause is not clear, the $95 Springfield Diagnostic is the safer starting point in Springfield. Nearby towns may cost more based on drive time and location.
Read the drain line service page