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Condensation on Your AC? Understanding The Causes and Solutions

Nicholas Longo
June 12, 2023

Why is There Condensation on Your AC and How to Fix it

Many homeowners experience this problem, and it can be quite frustrating. This article will discuss the reasons for condensation on your AC and what you can do about it. Air conditioning is crucial component in every home here in cape coral, especially during our hot, humid summers. However, like any other appliance, it can have issues from time to time. One common problem that homeowners experience is condensation on their AC. If you're experiencing this issue, you might wonder what causes it and how to fix it. Well, you're in luck. In this article, we'll be discussing the reasons why there is condensation on your AC and what you can do to prevent it.


What is Condensation on Your AC?

Condensation occurs when there is a difference in temperature between the air and the surface. For example, in the case of an air conditioner, warm air from your home passes over the evaporator coils, which are cooled by refrigerant. When the warm air meets the cold surface of the ac coils, moisture in the air condenses and turns into water droplets. These droplets then drip into the condensate pan and are drained away.


Why is There Condensation on Your AC?

There can be several reasons why your AC is experiencing condensation. Let's take a look at some of the most common ones:


Clogged Drain Line:

If your drain line is clogged, water can't flow away from the unit and will collect in the drain pan. This can cause the condensate pan to overflow, resulting in water damage to your home. Most systems now have a float switch to shut the system down if the drain pan begins to fill with water but its best practice to ensure the float switch never has to activate to begin with.


Dirty Air Filters:

When the air filters are dirty, the airflow over the evaporator coils is reduced. This can cause the coils to freeze over, leading to excess condensation, no cooling, and system failure.


Low Refrigerant:

If your AC is low on refrigerant, the evaporator coils won't be able to cool the air properly. This happens because the air handler gets too cold and turns the condensation, that normally drains away, into an ice block. this stops air flow and won't cool the area properly.

Bad Freon Charge: 

If the lines on your system weren't properly cleared and vacuumed to 500 microns on instillation, then there is a possibility that there is some residual moisture or containments left in the line. This can lead to bad performance and sweating on your condenser. If you notice a pool of water around your condenser outside and it hasn't rained, then this could be your problem.

Improper Sizing:

If your Air conditioner is too big for your home, it will cool the air too quickly. The problem that this creates is that when the air is cooled too quickly is the HVAC system can't pull enough humidity out of the home and will result in higher risk of condensation. On the other hand, if it's too small, it will have to work harder, leading to excess condensation as well.


Bad Connection in your ducts:

When there is a bad connection in the flexible duct line, the air flowing through the duct can escape through the gap instead of being delivered to its intended location. This can cause the surface of the duct can become cooler than the surrounding air, causing moisture in the air to condense on the surface. This condensation is known as sweating. In addition to being unsightly, sweating ducts can also cause water damage, mold growth, and reduced indoor air quality. It's important to call your local AC company to address any bad connections in the duct.

How to Fix Condensation on Your AC?

If you're experiencing condensation on your AC, the first thing you should do is check your air filters. If they're dirty, clean or replace them. Then check the drain line outside to make sure it's not clogged. If it is, you can use a hand pump we talked about in another blog to clear the blockage.

If neither of these solutions works, you may need to call SWFL's best AC company, or your preferred AC Company if youre outside of ouf SWFL. They can check the refrigerant levels, as well as the sizing of your AC, to ensure that everything is working properly.


For the HVAC Techs that are interested in a more In-depth lesson on condensation problems, check out this lesson from HVACR School.com

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