If you’ve noticed your AC leaking water inside, it’s a sign that something’s not quite right. While a small amount of condensation is normal, a consistent or sudden AC unit leaking water could lead to serious damage to your floors, ceilings, or walls. At Billfish Air Conditioning, we’re here to break down the top five reasons for an HVAC water leak and how to fix them.
1. A Clogged Condensate Drain Line
One of the most common reasons for an air conditioner water leak is a clogged AC condensate line. Over time, dirt, mold, and algae can block the drain, causing water to back up into your home.
Fix:
Use a wet/dry vacuum or flush the line with distilled vinegar. If that doesn’t work, schedule a professional AC repair to clear the blockage properly.
2. Damaged or Rusted Drain Pan
Your system’s drain pan collects moisture from the evaporator coils. If it’s rusted or cracked, water will leak before it reaches the drain line.
Fix:
You’ll need to replace the pan. Our AC maintenance services include drain pan inspections to prevent this issue from escalating.
3. Dirty Air Filters
Dirty filters can restrict airflow, causing coils to freeze. When the ice melts, you’ll notice your dripping AC unit creating a puddle.
Fix:
Check and replace filters every 1–3 months, especially during peak summer months.
4. Low Refrigerant Levels
Low refrigerant reduces pressure in the AC system, which can lead to coil freezing and eventually, a central air water leak.
Fix:
This requires a licensed technician to recharge the refrigerant and inspect for leaks in the system.
5. Improper Installation or Sizing
If your AC isn’t level or is oversized for your space, it may not drain properly, leading to water accumulation and leakage.
Fix:
Ensure your system is installed by a qualified technician and sized appropriately for your home. An incorrectly installed unit often results in long-term efficiency and drainage problems.
Don’t Ignore a Leaking AC – Call Billfish Air Conditioning
Wondering how to fix an AC leaking water? The answer depends on the root cause—but ignoring it can lead to mold, structural damage, and higher repair costs. Whether it’s an AC leaking water repair, a full inspection, or preventative service, Billfish Air Conditioning is here to help.
Learn more from this Energy Star guide on AC efficiency and maintenance.
Schedule your service today and trust our team to resolve your AC condensate line leak or air conditioner water leak fix quickly and professionally!
