Traditional split-system AC systems contain a variety of parts, the three most important being an evaporator coil, a condenser coil, and an air handler.
There’s another part, however, that plays a key role in the functionality of an AC system: the drain line. It typically runs from the evaporator coil to the exterior of your home.
What’s the purpose of an AC drain line exactly?
The Basics of an AC Drain Line
Also known as a condensate line, an AC drain line is a piece of hollow tubing that begins below or around the evaporator coil and runs to the exterior of your home.
Some AC drain lines are made of PVC, whereas others are made of metal. Regardless, they all consist of hollow tubing that connects to the outside of your home.
AC drain lines work in conjunction with a drain pan. The drain pan catches the condensation as it drips down from the evaporator coil. At the bottom of the drain pan is one end of the drain line, which connects to your home’s exterior.
Flushes Condensation
The main purpose of an AC drain line is to flush the condensation generated by your AC system’s evaporator coil.
When you use your home’s AC system, the evaporator coil will produce condensation. The evaporator coil contains refrigerant. When warm air travels over the cold refrigerant-filled fins, the evaporator coil will produce condensation.
Rather than allowing this condensation to accumulate, AC systems are designed with a drain line to flush it.
Humidity Control
Because it flushes condensation, an AC drain line can control the humidity level inside your home.
Even though you can’t see it, there’s always at least some moisture vapor in the air. Allowing moisture vapor to go unchecked, though, can lead to several problems. With a high humidity level, you may discover mold and mildew growing on walls. Fungi such as mold and mildew thrive in humid environments.
High humidity may also contribute to the decay of wood. If your home has wood floors, it can damage them.
The AC drain line will help control the humidity level inside your home by flushing condensation to your home’s exterior.
Improves AC Performance
The AC drain line can even improve the performance of your home’s AC system.
When there’s a lot of moisture vapor present in the air, your home will feel warmer than what it really is. As a result, you’ll have to run your AC system for a longer period to achieve a comfortable environment.
If you are experiencing a problem with your air conditioning or heating call us at 512-336-1431 to schedule an appointment. We’ll be glad to come out and take a look at the issue.
1431-183 A/C & Heating proudly serves Round Rock, Georgetown, Cedar Park, Pflugerville, Leander, Liberty Hill, and North Austin.
