Most modern air conditioning systems feature both an indoor and outdoor unit. An evaporator coil within the inside unit is responsible for cooling the air as it blows throughout the home. Unfortunately, these systems can end up leaking water, which calls for prompt repairs/replacements. Let’s look at the common reasons why your AC is leaking water and what can be done to fix these issues.
Leaking AC Common Causes
As warm air blows over the evaporator coil, condensation can form. These water droplets can drip into the condensate plate, leading to a PVC drain line that routes the water either into an interior drain or outdoors.
Below are a few common causes of an AC unit leaking water.
1. Condensate Drain Pan Damage
It’s quite possible your AC unit features a rusted or damaged drain pan. This commonly happens to older units, typically ones that are between 12-15 years old. At this time, it’s best to replace the drain pan entirely.
2. Frozen Evaporator Coils
Dirty evaporator coils, restricted airflow, and low refrigerant levels can all lead to the condensate freezing on the unit’s coils. The ensuing ice melt can quickly fill your drain pan, leading to water leakage.
Always monitor the refrigerant levels, ensuring the coils are clean and that there is adequate airflow to keep the condensate from freezing.
3. Clogged Or Dirty Air Filter
It’s recommended to change the air filter for your unit every 30 days. A dirty air filter can restrict airflow over the evaporator coil, which can result in condensation and water leakage.
Dirty air filters can make your system work harder, potentially leading to worn-out or damaged parts.
4. Low Refrigerant Levels
When refrigerant levels get too low, the coils can freeze and create quite a mess once thawed out. Other common signs of low refrigerant levels include hissing or gurgling sounds. This can lead to ineffective cooling, overall.
It’s recommended to have an experienced HVAC technician inspect your unit at the beginning of each new season. At this time, the technician will inspect and refill the refrigerant, as needed.
5. Clogged Condensate Drain
This is one of the most common causes of AC leakage. As time goes on, this drain can collect dust, dirt, debris, and even algae. Once clogged, the line will back up and overflow from the drain pan, resulting in water.
You can unclog the drain pan by removing any present debris with a wet/dry vac. If this does not solve the issue, contact an experienced HVAC team in your area.
6. Broken Condensate Pump
A broken condensate pump is one obvious cause of water leakage. If the unit is installed in a basement, the pump must send water outside.
When the pump is broken, however, the water will not be pumped outside of the home. This part needs to be either repaired or replaced as soon as possible.
7. Improper Installation
An improperly installed AC unit can ultimately result in water leakage and various drainage issues. It’s always best to hire an experienced HVAC team to install and maintain your system.
Cascade Mechanical HVAC Services In Tempe, AZ
Need commercial AC repair in Phoenix Arizona? Call Cascade Mechanical, Inc. at 602-233-3265. We offer complete commercial HVAC services like chiller tube repair cooling towers, and heat exchangers to Scottsdale, Phoenix, Mesa, Gilbert, Chandler Arizona and more!
