How to Prevent a Clogged AC Drain Line

How do I prevent a clog from happening?

Keeping the ac drain line clean is actually quite simple. There is a pipe located near your ac drip pan that should be easily accessible to you. This line needs to be clean and free of algae so that the water can flow in the event of a problem with the main line. There are several schools of thought on what to use to keep the lines clean. I use about a quarter cup of bleach once a month in mine. If you are not a fan of bleach then vinegar and water can be used as a substitute. I have even heard of using mouthwash as a substitute for those concerned about the bleach fumes.

How do I know if there is a problem?

This is not a problem that is always easily discovered. This isn’t because it’s tough to spot. If the drain pan is filling with water then you know you have a problem. The issue is that we don’t hang out in our attics and therefore a visual diagnosis is not usually our first clue. In most cases the secondary drain line leads to a location outside, usually by a secondary bedroom window, or above the sink in a bathroom. When this line begins to drip it means that the primary drain line is clogged. Get to it quickly before the dripping stops and you’re ok. You can do it yourself, just click here to see a video, or you can call a licensed ac technician or plumber.

In some cases the secondary line may be improperly installed or capped off. In other cases we may just miss the dripping altogether. In any case when the dripping stops that’s when the problems really begin. This allows the drain pan to fill up and eventually spill over causing water spots on the ceiling and headaches for the homeowner.

Yearly check-ups just make since.

We recommend having a licensed professional service your air conditioner and furnace once a year. The expense is minimal compared to the cost of repair once a problem starts. Yearly check-ups will not guarantee that problems won’t arise, but it will keep your systems running smoothly and efficiently throughout the year.

You can read this post for additional tips on how to keep your a/c running smooth and cold during these hot Katy/Houston summers.

If you need help or would like to speak to someone about a maintenance schedule just email me at . We work with several qualified contractors and would be happy to have one of them give you a call.




Stacy is a licensed REALTOR® and the team leader of The Jones Team, a group of licensed real estate agents who work together to provide exceptional service for their clients.  Stacy and his team specialize in the areas West of downtown Houston.  These incredible real estate agents can help you purchase or sell a home in locations such as Katy, Cypress, far West and Northwest Houston, Richmond, Fulshear, Sugar Land, Spring Branch, Memorial, Spring, Tomball, The Woodlands, and Magnolia.  Whether you are in the market to sell a home, buy a home, or just have real estate related questions, Stacy and The Jones Team are available to help.

Stacy Jones is a REALTOR you can trust


Equal Housing Opportunity   Jones Team Realty Logo   REALTOR logo

All information in this site is deemed reliable but is not guaranteed and is subject to change.

The information herein is furnished by the owner to the best of his knowledge, but is subject to verification by the purchaser, and agent assumes no responsibility for correctness thereof. The offering is made subject to errors, omissions, change of price, prior sale or withdrawal without notice. In accordance with the law, this property is offered without regard to race, creed, national origin, disability or gender.