How to clean A/C drain line? Vinegar or


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Old 08-11-23, 12:28 PM
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How to clean A/C drain line? Vinegar or

Hello,

I have watched several videos about cleaning the condensate drain line of an A/C unit and some people suggested to use vinegar, others suggested diluted clorox.

What is the view here?

Thanks, Richard
 
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Old 08-11-23, 01:23 PM
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If you do it regularly and before the buildup is too thick it can work. Your basically killing the microbes that form the scum. Chlorine is more potent so you can use less. If using vinegar don't forget that it is already diluted and will get diluted further by any water already in the system so use it full strength and don't be too stingy.
 
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Old 08-11-23, 02:56 PM
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clorox is smelly (and if you have a pump it may damage the seals of the pump), use Spray Nine. also good for engine cleaning and even carpet.
 
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Old 08-13-23, 07:18 AM
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Thanks Pilot Dane and argile tile,

now some A/C systems have a pan under the, I guess, condenser coils to collect water, just in case. My pan and the coils are hidden behind some sheet metal. Would it make sense to open up the whole thing and clean there too?
The A/C is 2 years old and I live in south Florida.

Thanks again, Richard
 
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Old 08-13-23, 11:17 PM
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There could be secondary drain pan under the air handler if the unit is installed where a condensate leak could cause water damage. This is common in an attic installation.

The primary pan is inside the air handler.
There are two drain fittings. One is slightly lower than the other one.
The lower fitting is the primary drain and the higher one is the secondary drain fitting.

Bleach and hot water are good cleaning agents.
Determining where to add to drain is important.
Many clogs are formed inside the unit directly in front of the drain fittings.
Having the ability to add bleach and then hot water directly in the secondary fitting is key.


If you can post a picture or two of your drain setup we could comment further.
How to insert pictures.
 
 

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