Easy to Follow Tips for Cleaning Your Air Conditioner's Condensate Drain Line

The two main functions of a central air conditioning system are to cool the air and to dehumidify the environment. If you live in a humid part of the country, the second part of that is especially important to you. It’s difficult to enjoy the summer season in a clammy, humid and uncomfortable home.

What is the condensate drain line?

All of the condensation that is created from the two functions of the air conditioner is sent out through the system’s condensate drain line. This line can become clogged if it isn’t cleaned out regularly. The line is notorious for being a place where algae can grow. This blocks the line and prevents condensation from exiting your home, which can cause a leak and damage to your property.

Calling in a professional

If you aren’t comfortable working with heating and cooling systems, it may be in your best interest to contact a professional heating and cooling company. At Pivotal Home Solutions, our brands work with a network of trained, experienced, professional and local service providers. To see if a heating and cooling repair or maintenance plan is available in your area, please visit our website (LINK) and enter your zip code in the search bar at the top of the homepage. A list of our brands in your area will appear on the search results page.


If you’re comfortable working with your air conditioner, you will need a shop vacuum and a medium to large bucket. First, locate the condensate drain line on the exterior of your home. Once you have found it, attach your shop vacuum to the line and secure it in place with the tape. This will help to create an airtight seal. Turn the vacuum on and it will suck out whatever may be clogging the line. Then, empty the vacuum into the bucket. This will help you see what may have been obstructing the exit of condensation from your AC system.

If you have a “T” PVC drain inside of your home, you can easily open it up and pour half a cup of vinegar into the line twice a year to help with dissolving any clogs.
If you still feel humid and hot in your home after cleaning the line, it may be time to contact a heating and cooling professional for a more thorough inspection of the system.