
What can I do if my central air conditioner is leaking water?
Follow these steps to keep your cool when your system can't.
- First, check your drain pan. Located directly underneath your unit, the drain pan catches the condensation that emerges normally from running your air conditioner.
- Assess the air filter. If your pan isn't the problem, take a look at the air filter, which is placed directly into your unit; the edge is usually visible from ...
- Unclog the condensate line. ...
What's causing your air conditioner to leak water?
Reasons Why Your Air Conditioner Is Leaking Water Inside
- Rusted Or Damaged Drain Pan. The drain pan is located underneath the AC's evaporator coils or in the air handler to catch condensation as it drips, and the water ...
- Disconnected Drain Line. If the drain line is not correctly attached or installed, it will disconnect and cause your AC unit to leak water.
- Clogged Condensate Drain Line. ...
Why your air conditioner is leaking water inside your home?
- a frozen evaporator coil
- a faulty air handler
- a disconnected or broken drain line
- a damaged drain pan or a drain pan that needs cleaning
- a clogged condensate line or drain line
- a damaged coil in need of some TLC
What does it mean if your air conditioner is leaking?
Air Conditioner Leaking Because Of Frozen Coil. There are two things that will cause your evaporator coil to freeze – 1) reduced airflow and 2) a refrigerant leak. When there is no warm air to get absorbed by the refrigerant in the coil, the chemical liquid does not get warm and turn into a gas. Instead, it freezes.

What happens when your air conditioner leaks water?
If your AC is leaking inside the home, it's most likely due to a clogged condensate drain line. Over time, this line can become clogged with debris like dirt, dust, or mold. When your condensate drain line gets clogged, water can't escape and drain to the outside of the home.
Should I turn off my AC if it's leaking?
As soon as you notice that your air conditioner is leaking, go ahead and turn it off. This is important even if the air in your home doesn't feel any different, because it will stop the flow of water. The more water leaks out of your air conditioner, the more susceptible it becomes to further damage.
How do I stop my air conditioner from leaking water?
How to Fix Air Conditioner Leaking Water from The Unit?Change Your Air Filters. ... Clean the Condensate Drain Line. ... Make Sure Your Drain Pan Is the Right Fit for Your Unit. ... Pour Bleach into Your Drain Line Every 6 Months. ... Don't Overwork Your Air Conditioner When It's Hot Outside.
Why is my air conditioner leaking water inside?
A clogged condensate drain line is the most common cause of water leaking from your AC into your home. If the drain line gets clogged with dust, dirt, sludge or mold, that water backs up into your home. In that case, you'll need to unclog it.
How much water should drain from an air conditioner?
between 5 and 20 gallonsWhen the summer season is in full swing and humidity is high, it's normal for your air conditioner to drain anywhere between 5 and 20 gallons of water each day.
How do I clear my AC drain line?
How to Unclog Your AC Condensate Drain LineTurn off your air conditioner. ... Remove the cap from the pipe. ... Check to see if there is any debris stuck in the drain. ... Remove any visible debris and retest for proper drainage. ... Pour in Vinegar. ... Replace the drain cap. ... Remove the drain cap.More items...•
Is my AC leaking water or refrigerant?
Perhaps you've noticed warm air or lower than normal airflow coming out of your system's registers or you've heard a hissing sound. Maybe you've observed water on the floor by your HVAC unit or seen ice forming on your evaporator coils. These are all telltale signs of an AC refrigerant leak.
Where is the drain line on my AC unit?
Every AC system has a condensate drain line (a white PVC pipe) that runs from your indoor air handler to the outside of your home. During normal operation, condensate is safely carried out of your home via the drain line. You'll usually find the drain line near the outdoor condenser unit.
Why is water dripping from evaporator coil?
The most common causes of evaporator coil leaks are a clogged drain line or a rusted condensation pan. The drain line can get clogged with all sorts of things, like insects, mold or dirt, which then means the water coming off the condensation coil has nowhere to go.
Where is drain pan on AC unit?
An AC unit typically has two different drain pans: The primary air conditioner drain pan located underneath the indoor evaporator coils and the auxiliary or back up drain pan. The primary condensate pan is usually welded to the evaporator coil, making it harder to replace.
How do you fix a clogged condensate pipe?
0:298:10How to UNCLOG your AC DRAIN Condensate line FAST - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo a very simple easy way to fix. This is to just take a rag or some tissues like I'm using hereMoreSo a very simple easy way to fix. This is to just take a rag or some tissues like I'm using here wrap. Them around the pipe. And what we're trying to do is just kind of close the gap with the vacuum.
Is water leaking from air conditioner dangerous?
Water leaking from the AC is just that, water. Except for the cases of ice melting, the water is just condensate and by itself not dangerous. Howev...
Is it OK if its leaking outside only?
When the system runs, you will always notice condensate on the low pressure line (larger copper pipe). The pipe itself will be cold to the touch an...
Can I use my ac when it has water leaking?
A water leak is generally an external problem (meaning it isn’t internal to parts and motors). In itself, it isn’t much of a problem at first. Howe...
My AC is new, why is it leaking water?
While a newly installed AC shouldn’t leak water, there are several reasons why it can happen. It is possible you have the wrong sized AC for your h...
Do AC leak sealers work?
AC leak sealers are not designed for water leaking and instead are made for refrigeration leaks. However, they should not ever be used. Even as a t...
Is leaking Freon the same as leaking water?
A refrigerant leak can cause a water leak by freezing the system or creating ice on the coils. However, it is not the same thing as a water leak. A...
My furnace is leaking water when ac is on - what should I do?
If you notice your furnace leaking while the AC is on, it can be an indication of a clogged drain (most likely) or a problem with the evaporator co...
How much will it cost to have a professional fix my leaking air conditioner?
The cost for a professional will vary on the location and time of year as well as the underlying nature of the problem. According to HomeAdvisor, a...
How Does Water Form In Your Air Conditioning System?
Condensation builds up as your AC unit pumps cold air into your home. A modern AC unit has both an outdoor and indoor unit that helps with proper airflow. The inside AC system has an evaporator coil that chills the warm air outside to a comfortable temperature inside. As condensation forms, dripping water lands in the drip pan.
Reasons Your AC System Can Leak Water
While you can still use leaking air conditioners, it's not recommended for extended use. You should turn off the system to check what the cause of the problem is, which will most likely be one of the nine common reasons below.
When Is Water Leaking From Air Conditioners Dangerous?
Water leaking is a natural byproduct of air conditioners, but it can also be dangerous in certain circumstances. When electrical equipment is nearby, leaking water becomes a serious hazard. It can also cause damage to your home. Leaking water from an air conditioning unit may cause you, the homeowner, more trouble than you’d like.
Final Thoughts
It is common for water to leak from an air conditioner, especially if yearly care is needed. By changing filters, clearing clogs, and checking coolant coils, you may be able to fix the leak yourself. However, there can be some risks in fixing a water leak on your air conditioner without a pro.
Can We Use AC When Water Is Leaking?
Using AC when water is leaking depends on the type of problem causing the AC to leak, so you will need to first determine what type of problem you are dealing with.
Is My Air Conditioner Supposed To Leak Water?
Well, it is pretty standard for your air conditioning unit to leak water a small amount of water during routine functioning since it produces condensation while it works. However, if the AC leaks do not stop in the day or the leakage is frequent and consistent, your AC has a problem that needs to be fixed.
Why Is My AC Leaking Water?
Remember how humid your house was before you turned on your air conditioner. That humidity is the water your air conditioner is removing from your home. It does this by condensation.
When the AC Unit Leaking Water Is a Problem
I understand that leaking air conditioners are a problem you don't need. But when you see leaking water, there are some things you can do. An AC unit leaking water basically has three common causes. Let's talk about them and possible remedies.
Is It Safe To Use The HVAC System When You See Water Leaking
It is NOT safe to use the air conditioning system when you see water leaking. The best thing to do if you see your AC leaking is to shut down the system. Air conditioner leaks can do quite a bit of damage to ceilings, floors and internal AC components.
Conclusion
It’s so easy to get used to your air conditioning system leaking, that you don’t even realize whether it’s normal or not. But it’s when you see water leaking on the outside of your AC that you realize a problem.
How to tell if your air conditioner is leaking water?
First, check your drain pan. Located directly underneath your unit, the drain pan catches the condensation that emerges normally from running your air conditioner. If it’s cracked or otherwise damaged, it can’t do its job—soon after, you’ll start to notice your air conditioner leaking water. So, follow along the edges, paying special attention ...
Why is my central air conditioner leaking?
The most common gremlin behind a central air conditioner ‘s leakages is a clogged condensate line. Because it’s located outside your house near your condenser, the line is subjected to the elements year-round, and algae can build up inside fairly easily, clogging it and causing a backflow. Though it requires a bit more effort than troubleshooting a cracked drain pan or dirty air filter, you may still be able to fix it yourself.
How to check if your air filter is dirty?
Assess the air filter. If your pan isn’t the problem, take a look at the air filter, which is placed directly into your unit; the edge is usually visible from outside. When a filter is dirty or full, ice can form on your unit’s evaporator coils and melt into pooled water below. Most filters last for a month or two, but if your system is getting a lot of use ( in summer, for instance), replacing it like clockwork every 30 days can prevent problems. If yours looks dirty—or you don’t remember when you changed it—swap it out for a new one now.
Why does my AC leak water?
A clogged condensate drain can cause AC water leaks – From time to time, your condensate drain may become partially blocked or completely clogged due to a buildup of dirt, rust, algae, and other debris.
How long does it take for a water leak to go away on an air conditioner?
If your unit is leaking even when it’s not in use, it could be a sign of a bigger problem. If your water leak continues for more than 24 hours, call a professional air conditioning contractor to inspect your unit.
Why does my AC drain pan freeze?
The AC’s refrigerant levels are low – Similar to a dirty air filter, low refrigerant levels result in a low amount of pressure in your air conditioning system, causing the evaporator coils to freeze over. If your evaporator coils freeze, it could cause the drain pan to overflow and leak water.
Why is my AC filter so dirty?
Your air conditioner’s air filters are dirty – A dirty air filter restricts airflow over the evaporator coils. As a result, the coils get too cold and freeze over. When they melt, excess moisture drips into the condensate pan and causes it to overflow. The AC’s refrigerant levels are low – Similar to a dirty air filter, ...
What causes an AC unit to leak?
As mentioned above, one of the main causes of AC leaks is a faulty condensate pan.
Can an air conditioner leak water?
You can expect your air conditioner to leak some water when it runs. But, it’s important to understand the difference between an expected amount of water and when your air conditioner is leaking too much. Keep reading to learn why your air conditioner leaks water and when to call an HVAC professional for help.
Is it normal for an AC to leak water?
Small amounts of condensation near your AC’s drain pipe is normal and to be expected . When your air conditioner works hard during extremely hot and humid days, you can expect to see more water leaking than average. A small puddle underneath the condensing unit is most likely the result of normal operation.
Why does my AC leak water?
AC Unit Leaking Water Due To Failed Condensate Pump. Condensate pumps exist because gravity cannot always carry the water from the drain pan outside. Your air conditioner may be below ground in a basement, or in a townhome attic with an elongated condensate line.
How Do I Stop My AC From Dripping Water In The Future?
One of the highest priorities on your maintenance to-do list is swapping your old, dirty air filters with new (correctly sized) ones. (See our blog on changing air filter)
What happens if your AC coil freezes?
But if the coil is frozen and you’ve shut the AC off like you’re supposed to, the melting block of ice will overwhelm the drain pan and line, and water will begin leaking out.
What is the drain line on an air conditioner?
As we’ve already discussed, the drain line is connected to the drain pan and carries the condensate (water) from your air conditioner outside.
Why does my evaporator coil freeze?
There are two things that will cause your evaporator coil to freeze – 1) reduced airflow and 2) a refrigerant leak. When there is no warm air to get absorbed by the refrigerant in the coil, the chemical liquid does not get warm and turn into a gas. Instead, it freezes.
How to defrost evaporator coil?
Defrost your evaporator coil by turning the fan on while the AC is still off. This will blow warm air over the ice and speed up the thawing.
How does a condenser work?
The air, which is now cool, is blown back into the living areas through the supply vents by a fan. The hot gas in the coil makes its way to the compressor outside, which compresses it into an even hotter vapor. When the hot gas finally reaches the condenser, heat is discharged outdoors.
What happens if your AC drain line is clogged?
When AC systems are improperly installed drain pipe fittings may not be secure. Over time, they can loosen, causing the drain pipe to disconnect from the AC unit and allowing the condensate to drain through the ceiling or onto the floor. As with a clogged drain line, the location of the leak will depend on whether the primary or secondary drain pipe is the one affected and whether your central AC system is located in the attic or in your house.
Why is my AC clogged?
Due to the continual presence of water, mold and mildew can grow inside the unit , causing it to clog.
Why does my AC drain pan overflow?
A clogged condensate drain pipe can make your AC system’s drain pan overflow. This is probably the most frequent cause of water leakage from a central AC system, bringing many service calls to HVAC professionals as summer temperatures rise. Drain lines can become clogged with dirt, rust, algae and other debris.
How to keep condensate pump from mold?
Make sure each drain line contains a p-trap and air vent. Keep your condensate pump free from mold and mildew by flushing it with a 50% bleach/water solution.
Can air conditioning leaks cause water damage?
Air conditioning leaks can be frustrating. Not only are they messy, but they can potentially cause significant water damage to your home. In fact, these “small” inconveniences can sometimes lead to big problems.
