AC Leaking Water Inside: What Should I Do?

Posted on: May 25, 2021

Is it dangerous if the AC unit is leaking water inside the house Have you noticed a water leak on the wall near your AC? Indoor AC leaks are a common problem for homeowners, unfortunately. Depending on the cause and type of leak, you may experience more severe AC issues if the problem at hand is not addressed.

Luckily, you can rely on professional, insured, and certified air conditioning installation technicians, ready to visit your home in Murrieta, Lakeview, San Marcos, La Jolla, or anywhere in between! Read on to learn what causes indoor leaks and how you can help the situation before requesting a visit from a technician.

Is it dangerous if the AC unit is leaking water inside the house?

If your air conditioner is leaking, it’s most likely only water. Disconnected or clogged condensate drain lines, overflowing drip pans, and frozen coils often cause water to drip out of your unit.

Although it’s not as common, your air conditioner can also leak refrigerant, a cooling liquid used to reduce your indoor temperature. If you suspect that your AC is leaking refrigerant, make sure to contact an HVAC company right away.

There are some immediate steps you can take to prevent water damage and mold growth from your AC leaking only water:

  • First, turn off your AC system to stop the water flow.
  • Next, begin cleaning, soaking up, and drying the affected areas. Use a wet-dry vacuum or a Shop-Vac if you have one.
  • Call an AC repair technician to find and tackle the cause of the leak.

Why is my air conditioner leaking water inside the house?

1. Clogged condensate drain lines

As it works to cool down your home, your AC unit produces condensation which then drips down the evaporator coil and into the drain pan. The moisture is then transferred to the outdoor unit via the condensate drain line. Over time, algae, mold, grime, and other debris can build up and block the drain line, causing leaks.

2. Cracked or damaged drain pan

Corrosion can cause old AC drain pans to become brittle. Over time, rust can weaken the pan and create cracks and holes. As a result, your AC may start leaking indoors. To prevent this, you should have your AC serviced and maintained at least once a year. A qualified technician can spot specific red flags and resolve smaller issues before they get out of hand and cause extensive damage.

3. Iced over evaporator coil

The evaporator coil of your air conditioner is cold by default. However, problems may arise if the coil develops a layer of ice or frost. If there’s too much ice, it can melt off the evaporator coil, drip into the drain pan, and overflow, causing leaks. There are two common reasons for this:

  • A clogged air filter that causes poor airflow. This is why it is essential to replace your AC filters regularly.
  • Low refrigerant levels. An air conditioner that works properly has a constant level of refrigerant. However, corrosion and vibrations can cause leaks over time. When this happens, the pressure level of your system drops and causes the coil to ice over.

Since low refrigerant levels can cause serious issues with your AC, it is paramount that you contact professionals as soon as you suspect a leak.

How do I stop my AC unit from leaking water inside?

If you notice water leaking out of your indoor AC unit, the best thing you can do is contact a qualified HVAC technician. However, there are a couple of easy fixes to try.

For frozen evaporator coils:

  • Replace the filters. We recommend changing air filters every 3 months, and more frequently in the summer (once a month).
  • Clear the vents. Make sure that your air vents and registers aren’t covered or blocked.
  • Call a professional. If replacing the filters and clearing the vents doesn’t help, you may have a low refrigerant level, which requires the expertise of a professional.

For damaged or overflowing drain pans:

  • Clear out and inspect the pan. Use a wet-dry vacuum to clean the drain pan after inspecting it from all sides using a flashlight.
  • Use a water sealant. You can try to fix the drain pan temporarily using a water sealant.
  • Replace the drain pan. It’s usually best to have the damaged drain pan professionally replaced.

For clogged drain lines:

  • Clear smaller build-ups of algae, fungi, or debris by pouring a quarter cup of vinegar down the drain line.
  • Clear larger build-ups using a wet-dry vacuum. You can find a wet-dry attachment that connects with the drain line at most home improvement stores.

Most of these tips can also serve as preventative measures for indoor leaks. However, since some AC maintenance tasks require more time and effort, many homeowners choose to delegate them to experts. What’s more, scheduling a professional tune-up can also prevent more serious issues with your unit, ensuring your indoor comfort all year round.

Contact us for expert air conditioning installation and repair in Murrieta

Why is my air conditioner leaking water inside the house If you’re worried about your AC failing just before the summer, make sure to get in touch with Action Air Conditioning Heating and Solar. As a well-established HVAC repair and installation company serving Murrieta, Temecula, the rest of South Riverside, Orange, and San Diego county, Action has the experience to fix any issue with your AC system. This includes indoor and outdoor leaks, malfunctioning air conditioner fans, leaks in your HVAC ductwork, and many other common or complicated problems.

At Action Air Conditioning, Heating, and Solar, it is our goal to provide our neighbors in Murrieta and Riverside County with convenient services, high-efficiency HVAC systems, and optimal indoor air quality. Our skilled technicians are at your service whether you need AC repair, maintenance, installation, or replacement services. Count on us to employ industry-leading techniques to efficiently identify and effectively resolve your AC and heating problems.

Contact us now and get the answers to your HVAC questions and concerns so you can stay comfortable all year.