Why Is My HVAC Leaking?: 5 Possible Causes and How to Get It Fixed Fast

It’s something no homeowner wants to find—leaks and dripping water coming from their HVAC system.

What causes HVAC leaking, and how on earth do I fix it?

You may be surprised to learn that HVAC leaking can be caused by a range of issues, some with simple solutions, while others require professional help. If leaks aren’t fixed, they can damage your HVAC system to the point where it needs replacing—which can cost a staggering $9,582, on average.

To learn more, keep reading to find five possible causes of HVAC leaking—plus, how to get them fixed and keep your house safe.

1. HVAC Leaking Can Be Caused by Low Refrigerant Levels

If you notice a leaky HVAC system, this can sometimes be caused by low refrigerant levels. When you’re low on refrigerant, it’ll lower pressure in your system, which causes the evaporator coil to freeze over.

This leads to leaking and condensation, but the good news is that it’s an easy fix—you just need to top up your refrigerant levels.

2. Clogged or Dirty Air Filter

Another common cause of leaks is a clogged or dirty air filter. If it’s clogged or blocked with debris, such as hair or dust, this leads to frozen evaporator coils.

To check or replace your air filters, look for an experienced HVAC company in your area. With regular servicing to your home or commercial HVAC system, you’ll avoid issues such as leaks.

Your filters should be changed, on average, every 60-90 days.

3. Cool Temperatures Outside

When the weather outside is cooler, this can cause coils to freeze and drip water. If you’re gearing up into the winter months, schedule an autumn servicing to make sure your HVAC system is prepared for the winter months.

4. Clogged Drain Line

Another common cause of leaks is a clogged drain line. If your HVAC’s drain line gets dirty or clogged, with mold, dirt, or debris, water is going to get backed up and leak, since there’s nowhere for it to go.

If this happens, call a professional who can clear your drain line using a special vacuum tool to suck out the debris. It’s not an easy DIY job, so it’s best left in the hands of the professionals.

5. Damaged Drain Pan

Your drain pan is the part of your HVAC system that catches condensation coming off the unit. If the drain pan becomes damaged, cracked, or lost, then homeowners often experience water leakage.

The easiest way to fix this is by replacing your drain pan, although it can sometimes also be fixed with water sealant.

Contact Us to Repair Your Leaking HVAC System

As you can tell, there are quite a few reasons for HVAC leaking, some more complex than others. If you’re unsure what’s causing the leaks to your system, the best thing to do is have it examined by a professional.

For quality and affordable HVAC services in the Franklin, Tennessee area, Sewell Electric Company is here to help. We are a small family business with over 70 years of experience in serving the local community.

We pride ourselves on high-quality workmanship and customer satisfaction. Please contact us with any questions or to schedule your next HVAC servicing.

Our friendly team looks forward to hearing from you.