Is My AC Drain Line Clogged?

While it may not be officially Spring yet, there are many of us that are flipping modes on our thermostats these days. Since we have been using our furnaces steadily over the past few weeks, here is a reminder to check your AC Condensation lines before we get into the hot summer months.

The condensation that our AC systems collect is really gross water. It grows things. That’s why the main condensation line is always plumbed into your sewer plumbing. Over time with heavy use, your condensation drainage line builds up sediments, molds, and algae that eventually clog the line. 

How Can I Tell If My AC Drain Line Is Clogged?

Observation is key. Take a walk around the outside of your home and look for pipes coming through your roof soffit above, or coming through an exterior wall and pointing down to the ground. You are looking for noticeable PVC extending out of your roof soffit or an exterior wall of your home that does not connect with anything. When your AC is on and you see water running out of this line, you likely have a clog in the main drain line and need to take action.

Shut your AC off and start checking, unclogging the main condensation drain line, or call the professionals. If left unchecked, the pooling condensation sludge can overflow the backup drainage system and cause some nasty water damage to your home's interior materials.

Can I Prevent Condensation Line Clogs?

Yes, you can and the beginning of warmer weather is a great time to do it. There is nothing wrong with getting professional help when you need it, but the good news is this is in the DIYer wheelhouse. All primary AC condensation drain lines should have an extension or access opening for flushing/snaking the line near the main unit either in a closet or attic space. Once you locate this, it is a simple process of regularly flushing the line. You can pour in a cup of solution like:

• Hot Water
• Distilled Vinegar
• Bleach
• Drain Cleaner
• Etc...

Save Money On Repairs

Regular flushing of your primary AC condensation drain line will save you money on repairs. When the primary drain line clogs the overflow gets into the house causes water damage. Depending on how much you use your AC system each year, and your history of drain line clogs, you can schedule regular drain line flushing 1-3 times per season.