Method 1: Wet/Dry Vacuum
| Step | Action |
|---|---|
| 1 | Place a wet/dry vacuum hose over the drain line opening |
| 2 | Seal the opening with a rag or tape for a tight fit |
| 3 | Run the vacuum for 1–2 minutes to suck out the clog |
Method 2: Vinegar and Hot Water
| Step | Action |
|---|---|
| 1 | Pour ½ cup of white vinegar down the drain line |
| 2 | Let it sit for 30 minutes to dissolve algae and debris |
| 3 | Flush with hot water |
Pro tip: Doing this once a month prevents clogs before they start.
Method 3: Bleach or Hydrogen Peroxide (For Stubborn Buildup)
| Step | Action |
|---|---|
| 1 | Use a small amount of bleach or hydrogen peroxide |
| 2 | Pour it down the drain line |
| 3 | Let sit for 15–20 minutes |
| 4 | Flush with water |
Caution: Do not mix bleach with other chemicals. Use in a well-ventilated area.
Other Common Causes of AC Leaks
1. Dirty Air Filter
| Problem | Fix |
|---|---|
| A clogged air filter restricts airflow | Replace the filter every 1–3 months |
| Restricted airflow causes the evaporator coil to freeze | When it thaws, excess water overflows the drain pan |
2. Damaged or Rusted Drain Pan
| Sign | Action |
|---|---|
| Rust holes or cracks in the pan | Requires replacement (may need a technician) |
| Pan is full of debris | Clean it out with a sponge or cloth |
3. Improper Installation (Not Level)
| Sign | Fix |
|---|---|
| The unit is tilted the wrong way | Water should drain toward the outside |
| Check if the unit is level | Adjust the level if safe to do so |
4. Refrigerant Leak
| Sign | Action |
|---|---|
| Low refrigerant levels cause the coil to freeze | This is a professional repair |
| Ice buildup on the coil | Call a technician to check refrigerant levels |
When to Call a Professional
While most leaks are simple fixes, some require professional attention.
| Situation | Action |
|---|---|
| You have cleared the drain line but it still leaks | Call a technician |
| The leak is coming from the refrigerant lines | Call a technician |
| The unit is freezing up repeatedly | Call a technician |
| The drain pan is rusted or cracked | Call a technician |
| You suspect a refrigerant leak | Call a technician |
