Discovering water around your indoor air handler is a common AC complaint. While your system naturally produces condensation, that water should drain away, not pool on your floor. Several issues can cause a leak.
How AC Creates Water
As warm, humid air passes over the cold evaporator coil, moisture condenses, just like droplets on a cold glass. This condensation collects in a drain pan and flows out through a condensate drain line. Problems anywhere in that path lead to leaks.
Clogged Condensate Drain Line
The most frequent cause is a clogged drain line. Algae, dirt and debris build up over time and block the line, causing water to back up and overflow the pan. Clearing the clog resolves many leaks.
Frozen Evaporator Coil
If the coil freezes due to low refrigerant or restricted airflow, it eventually thaws and produces more water than the pan can handle, leading to overflow. The underlying freeze must be addressed.
Damaged or Rusted Drain Pan
On older systems, the drain pan can crack or rust through, allowing water to escape rather than drain. A replacement pan solves this.
Clogged Air Filter
A dirty filter restricts airflow and can cause the coil to freeze, which then leads to leaking. Simple filter changes help prevent this chain of events.
Improper Installation
A unit that is not level, or a drain line with poor slope, can prevent proper drainage. Correcting the installation stops the leak.
Because a persistent leak can cause water damage and mold, it is best to have a technician find and fix the cause rather than just mopping up the symptom.
Need Help From a Cooling Specialist?
Whether you need a repair, a tune-up or a new system, Emergency Cooling NJ is here to help homeowners across New Jersey. We offer AC repair, maintenance, installation and 24/7 emergency service in every NJ county. Call us at 862-660-7726.