Quick Answer: How often should you put bleach in AC drain line?

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Written By Thurman Schinner

Thurman Schinner graduated from Cambridge University with a bachelor’s degree and has specialized in technical writing.

Using Bleach in Your AC Drain Be sure to use a minimum of 2 cups once or twice per year. Be advised, however, some newer units no longer recommend bleach or vinegar due to oxidation/degradation concerns.
Is bleach bad for AC drain line?
Bleach and Vinegar are Corrosive to metals The reason you shouldn?t use bleach or vinegar to clean your AC drain line all boils down to the fact that these chemicals are corrosive to metals. In other words, they literally eat away at metal.
How much bleach do I put in my AC drain line?
Mix 1/4 cup bleach with 1 cup hot water and pour it into the pipe that leads into the condensate drain pan. PVC pipe and pans are not affected by the corrosive nature of chlorine bleach, but be careful to not splash the bleach onto the evaporator coils or other metal parts of the air conditioner.

Is bleach or vinegar better for AC drain line?
We recommend using vinegar instead of a bleach solution because bleach can be harmful to your AC system if your drain line has copper tubing. Using vinegar will not damage your system. Spilling bleach can also ruin carpet or clothing, whereas vinegar will just leave a strong odor.
How do I keep my AC drain clear?
Keep Your Drain Line Clear

Find and inspect the condensate line in your home or garage.
Check the outside unit to make sure the drain pipe is not obstructed.
If possible, use a wet-dry shop vac to remove any excess water from the drain pan and condensate/drain line.
Add a ? cup of vinegar to the condensate/drain line.

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How often should you clean your AC drain line?
Kill any harmful bacteria or buildup and make sure your system continues to operate at peak performance by cleaning your drain line every 30 days.

Can I pour bleach in my AC drain?
Unclogging a Condensate Drain Line Over time, algae, mold and mildew can build up inside the condensate drain line and form a clog. Just pour a cup of bleach in the drain line?s access opening near the indoor air conditioning unit. This will kill any algae, mold or mildew that has formed in the pipe.
Does bleach damage PVC pipes?
While bleach is a great way to clean and disinfect, it does not dissolve things like hair. That means it won?t be very effective at breaking up clogs in your plumbing. However, bleach does remedy algae growth on the inside and outside of PVC pipes. Always run lots of water down the drain if you pour bleach in it.
What is best to clean AC drain line?
You do that by pouring a 1/4 cup of distilled vinegar through the AC condensate drain line. We recommend distilled vinegar because its acidity clears the clog faster. You may also use hot water, dish soap, or peroxide if you cannot stand the smell of vinegar.
Why does my AC drain keeps clogging?
Why Is My AC Pipe Clogged? An AC pipe usually develops a clog due to algae. Because of warm air that blows over the cold evaporator coil of the HVAC, the drain pipe can get pretty humid; and along with the condensate traveling through the pipe, these conditions are perfect for algae to thrive.
How often should you put vinegar in your AC drain line?
There is no exact amount you need to add, but around ? a cup should be fine. ? Repeat every month for a clean and bacteria free drain line! Be aware, that if at any time while doing this you see water pooled, or the vinegar will not go down the drain, you may have a blockage.
What happens when your AC drain is clogged?
When your drain line clogs, the water that your air conditioner produces has nowhere to go. Eventually, a completely blocked drain line will cause the water in your drain pan to overflow, resulting in potentially catastrophic damage to your home.

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