Air Conditioner Water?

CaptainZeroOctober 4, 2012

I have collected over 30 gallons of water that is basically nothing more than condensation discharge from my air conditioner (distilled). I hate to see this water go down the drain.

Does anyone have any idea if this is safe to use for hydroponics? I know it doesn't contain any chlorine or chloramine, etc., and I would check the PH/EC/TDS/etc. before adding was condensed on the exterior of the copper cooling tubes/radiator for the a/c unit.

It SEEMS to me like this water would be much better for hydroponics than the treated city-water that comes from my pipes, but I thought maybe you fine folks would have more insight.




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In theory it's ok, but air conditioners tend to leak oily goo and rust when they get old. Look at the surface of the water to see if it looks oily. You're not supposed to drink the water, because bacteria and mold can grow around the coils, but that's not as big of a deal for a plant.

    Bookmark   October 4, 2012 at 2:25PM
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Unless the A/C has failed, there will be no oil on the condensate.

I can't think of an A/C unit that has steel coils that would produce rust......coil are aluminum fins on either alum or copper pipe.

Use the water, it's how distilled water is produced.

    Bookmark   October 5, 2012 at 8:49AM
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I have a unit right now that leaks a little coolant on a hot day when it is running a lot. It bubbles out and looks like oil. The unit is fine until it hits about 100 degrees outside. And all of my old window units are rusty. It's mostly the metal housing that goes around the back. The water sits inside and rusts everything.

I do happen to have a hosta outside right underneath the window unit's drip, and it is doing great. In theory, anyway, rust in the water is merely supplemental iron, and a little is no problem.

    Bookmark   October 5, 2012 at 1:01PM
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You need to replace your window units....what you are doing is not very green.

    Bookmark   October 12, 2012 at 10:52AM
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