Water Dripping From AC Vent

No homeowner wants to experience water in a location it shouldn’t be in their home…like water dripping from the AC vent. But before you panic about the impending doom of water damage, fear not — there are many reasons why water will drip from your AC vent, and some are simple fixes.

7 Reasons Water Is Dripping From Your AC Vent

1. The Air Filter Is Dirty

The problem: The air filter is dirty. Air filters are one of the most important components of your air conditioning system, without them, excess debris within the air ducts of your system would infiltrate the rooms in your home. Over time, the air filter collects a significant amount of debris and needs to be changed. When a dirty air filter is left in place, it can become so clogged it causes your air conditioner to freeze up, which will cause water to drip from the vent.

The solution: If the amount of frost is minimal, changing the air filter should resolve the problem. Place a clean air filter in the system and remember to change it regularly.

2. There’s an Air Leak Around the Vent

The problem: Sometimes, a simple air leak around an air vent can cause this issue. As air escapes through the sides of the grate, condensation can build up and drip from the vent. This is common and simple to fix.

The solution: Stick your hand under the air vent and see if you can feel any air coming from the sides of the grate. If you feel air escaping, this is probably the cause of the excess moisture. All you need to do is caulk the leak to create a seal.

3. The AC Drain Line is Clogged

The problem: A clogged AC drain line can cause water to accumulate within an air vent. Similar to your air filters, over time the drain line can get clogged with dirt, dust, mildew, bugs, and debris and needs to be unclogged to work properly.

The solution: Look at the condenser unit and see if the drip pan is full or overflowing. If it is, the condensate drain line, which is usually located outside, is likely clogged. You can unclog it with distilled vinegar or a shop vac, but unless you’ve done this before, we recommend calling your local air conditioning technician for help.

4. The Condensate Pump is Broken

The problem: If you’ve already ruled out that your drain line isn’t clogged or have cleaned it out and you’re still seeing the drip pan filling up, your condensate pump (sometimes called a sump pump) could be the problem. Most pumps have a mechanism that is triggered to turn the pump on when the water rises to a certain level, called a float switch. This switch can get stuck due to buildup, causing your pump not to turn on when it should. However, if it’s not turning on after manipulating the float switch, you are likely in need of a replacement pump.

The solution: Try manipulating the float switch to see if the pump turns on. If the results are inconsistent, clean the bucket to remove the buildup and try again. If your pump is still not working and you’ve determined that you may need a replacement, we recommend enlisting the help of experienced AC experts to help.

5. The Unit Wasn’t Installed Correctly

The problem: Your AC unit or drip pan may be off-balance due to improper installation. If the unit or drip pan is tilted, this could cause condensation to pool and drop. This issue would occur soon after installation, not an issue that would begin after years of the AC working.

The solution: If possible, reposition your noticeably tilted drip pan so it’s level, and see if the issue is resolved. If you suspect your entire unit was installed incorrectly and is off-balance, contact the company that installed the unit to have it fixed.

6. The Duct Insulation is Not Sufficient

The problem: Many attics aren’t insulated, and many air ducts run through attics. If this is the case, insufficient insulation can cause a buildup of condensation in your system, which can then drain through your AC cents. A good rule of thumb: don’t assume there’s insulation if you didn’t install it yourself! You can check if your ducts are insulated by removing the air vent grate from your air vents.

The solution: Doing your own ductwork insulation can be an achievable DIY project if you’re comfortable with taking on the task and have some knowledge of your AC system and equipment. For most, we recommend scheduling an appointment with your trusted HVAC technicians.

7. There is an Unrelated Leak Above Your Ductwork

The problem: A leak unrelated to your AC that’s located above your ductwork is allowing water to travel out of your AC vents. This could be a roof or plumbing leak.

The solution: Follow the leak to determine the source if you can, and call the relevant experts for a repair.

Contact Complete Air Mechanical for AC Repair in Longwood, FL

At Complete Air Mechanical, your home’s comfort is our top priority, which is why we provide comprehensive air conditioning services. If your air conditioning system has an unexplained leak, we can help. Call us today to learn more about our services or conveniently schedule your next appointment online.

Call us at (407) 915-0144 and let us make your home comfortable.