There are several possible reasons for your air conditioner or heater leaking water.
- You will definitely want to call in a professional HVAC technician to troubleshoot your system.
A clogged condensate drain, freezing temperatures, disconnected drain line, broken condensate pump, low refrigerant, or a dirty air filter could be the cause. The condensate drain helps transport collected water out of the unit. If rust, dirt, debris, or algae builds up, it can partially or completely block or clog the drain and cause the A/C to leak. If you try to get the unit to cool your home when it’s too cold outside, the evaporator coils can ice over, causing the unit to leak. To avoid this problem, don’t run your A/C when the temperature is below 60 degrees. Even if your AC is installed correctly, it’s not unheard of for the drain line to become loose over time. If it gets loose enough, it can completely disconnect from your AC, which will cause leakage. If your condensate pump is broken, it can’t pump out the excess water in the condenser pan, so the pan will fill up and start overflowing or leaking. Low refrigerant can make the AC coils freeze, which can then cause leakage as the drip pan overflows. When the air filter becomes dirty, airflow is restricted and the evaporator coils don’t get the ventilation they need. This causes the coils to get too cold and eventually freeze. As the ice melts off the coils, moisture will drip down, causing the drip pan to overflow and eventually leak. Its normal for a well functioning AC to produce a little bit of condensation at times. The more your A/C is on and running, the more condensation you will have. When excess water is regularly leaking from the unit, you don’t want to ignore it. If you notice that it’s leaking for more than a day, contact an experienced A/C technician right away.