An AC leaking water inside is most often caused by a clogged condensate drain line, which backs water up into the home, or by a frozen evaporator coil that melts, a cracked or rusted drain pan, or a clogged air filter. Turn the AC off to stop the leak, replace a dirty filter, and clear the condensate drain; if water keeps leaking or the coil is freezing, call for same-day AC repair to prevent water damage.
Common causes
- Clogged condensate drain line (most common)
- Frozen evaporator coil that melts
- Cracked or rusted drain pan
- Dirty air filter
- Improper installation or slope
What to do, and when to call us
- Turn the AC off to stop the leak and protect floors.
- Replace a dirty air filter.
- Clear the condensate drain line if you can reach it.
If water keeps coming, the coil is icing, or the pan is cracked, call First Response for same-day AC repair in San Antonio.
Frequently asked questions
Is an AC water leak an emergency?
It can cause ceiling and floor damage fast. Turn the unit off and call us the same day.
Why is my drain line clogged?
Algae and dust build up over time. We clear it and can add a treatment to keep it flowing.
Same-day service?
Yes, 24/7 across San Antonio.