HVAC
Why Is My AC Leaking Water? 7 Things to Check
Condensation is normal inside a central AC system, but water escaping around the indoor equipment can damage flooring and signal a drainage or cooling problem.
What to check
1. Stop cooling if water is actively leaking
Turn the AC off to reduce additional condensation while you assess the problem. Protect flooring and nearby belongings from water damage.
2. Find the likely source
Look around the indoor unit, drain pan, condensate pipe, and pump. Water can travel, so the puddle may not be directly below the source.
3. Check the condensate drain area
A clogged or partially blocked drain can cause the pan to fill and overflow. Look for an obvious blockage only where the drain is safely accessible; do not disassemble the equipment.
4. Look for ice
Ice on the indoor coil or refrigerant line can melt into more water than the drain system normally handles. If you see ice, keep cooling off and let the system thaw.
5. Inspect the visible drain pan
A rusted, cracked, or overflowing pan can cause repeated leaks. Pan replacement may require equipment access and is usually a service job.
6. Consider a condensate pump
Some systems use a pump to move water to a drain. If it is not operating or shows an obvious high-water condition, follow the manufacturer's instructions and arrange service if the problem persists.
7. Watch for recurrence
Cleaning up the puddle is not the repair. If water returns when the AC runs, the cause may be drainage, icing, airflow, pump operation, or another equipment problem.
When to call an HVAC professional
Get professional help for recurring leaks, damaged pans, repeated drain blockages, a failed condensate pump, persistent icing, or any leak near electrical equipment.
Quick checklist
- AC is off while an active leak is assessed
- Nearby flooring is protected
- Likely source area has been identified
- Drain area has been checked safely
- Ice has been noted if present
- Pan or pump shows no obvious accessible issue
- Leak is monitored after service