What to Do if Your AC is Leaking Water

What to Do If Your AC Is Leaking Water – Causes & Quick Solutions

Water leaking from your air conditioner can be alarming and messy. While a little condensation is normal, a steady drip or puddle means something is not quite right. If you notice this issue, don’t panic. Here’s what you can do before Weiss Air Conditioning & Heating arrives to help.

AC Water Leaks: Common Causes

AC drain pan with standing water and rust buildup, indicating a clogged or leaking air conditioner — AC drain pan with standing water and rust buildup, indicating a clogged drain line or leaking air conditioner

Clogged Condensate Drain Line
Over time, dirt, dust, and algae can block the drain line, causing water to back up and overflow.
Frozen Evaporator Coil
Low refrigerant, restricted airflow, or dirty filters can cause the coil to freeze. When it melts, the excess water can spill over.
Damaged or Rusted Drain Pan
If your drain pan is cracked or corroded, it won’t hold water properly, leading to leaks.
Improper Installation or Leveling
An AC unit that’s not level can cause water to pool and overflow instead of draining correctly.
Dirty Air Filter
Restricted airflow from a clogged filter can lead to frozen coils—and eventually, leaks.

What to Do While You Wait for Professional Help

Turn Off Your AC
This prevents further damage and gives any ice on the coils time to thaw.
Check the Air Filter
If it’s dirty, replace it with a clean one to restore airflow.
Clear Around the Drain Line
If you see visible debris or algae at the end of the drain line outside, gently clear it away.
Contain the Water
Use towels or a shallow pan to prevent water from damaging floors or walls.
Avoid DIY Refrigerant, Coil Repairs, and Drain Line Repairs.
These require professional tools and expertise. Let a licensed professional handle these repairs.