What a Clogged AC Drain Line Does to Your Home

A clogged drain line is one of the most common reasons an air conditioner leaks water inside a Florida home. It is also one of the easiest problems to catch early, because the system tends to tell you before the damage starts.

What the Drain Line Does

Your air conditioner removes humidity from the air as it cools your home, and in a Manatee County summer that is a lot of water. The moisture collects in a drain pan under the indoor unit and leaves through a condensate drain line, usually a PVC pipe that runs outside or to a utility drain. In a warm, damp line, algae, mold and sediment build up over time until the water has nowhere to go.

What a Clog Causes

When the line backs up, the drain pan fills and the water looks for another way out. Many systems have a float switch that shuts the air conditioner off before the pan overflows, so the first sign is often a unit that quits for no obvious reason on a hot afternoon. If the switch is missing or fails, water can reach the air handler, the closet floor, the drywall or the ceiling below an attic unit. You may also notice a musty smell near the indoor unit, or damp spots around it, well before anything drips.

How We Handle It

Clearing a condensate line properly means getting past the clog, checking that the pan and the float switch are doing their jobs, and looking for the reason the line keeps filling in the first place. We do this as part of every maintenance visit, and during a repair call whenever a drain problem is the cause of the shutdown. Catching a slow line during maintenance costs far less than repairing a ceiling.

What to Do If You See Water

If your system has shut off or you find water near the indoor unit, turn the system off at the thermostat and call us. The earlier we see it, the less there is to dry out and repair. Call (941) 778-0773 or schedule an AC tune-up online to have the drain line checked before summer finds it first. License #CAC1817161.

Air & Energy is also a Florida Certified Plumbing Contractor (license CFC1429106) serving all of Manatee County. Learn about plumbing services or call (941) 778-0773.