Water from the AC gving a drink to a tomato plant and baby carrot.

Water from the AC gving a drink to a tomato plant and baby carrot.

Clean water for the garden… from the air conditioner.  Gravity does the work moving the water from the AC to the garden.


The water hose is old and damaged from a lawnmower cutting it with its blades.  I cut the mangled end off the hose and now the garden hose is put to use transporting water from the air conditioner down to the garden beds.

This system is like a slow-drip soaker hose.  I like that the water is pure, similar to what you would get from a distiller.   No Chlorine.  No Fluoride.  I believe this is pure water.

I think my garden plants thrive better without the Chlorine.  This makes sense when you stop and think.  Why does the city add Chlorine to the water?  They do it to kill life.  That might sound harsh, but if living microbes are in our drinking water, like bacteria or other pathogens, and then you drink the contaminated water, those little life forms will cause trouble inside your body, leading to diarrhea and even death.  So the Chlorine is put into the water to kill those little life forms.  Chlorine is also added to swimming pools for the same reason, to kill another form of life:  algae.  Since Chlorine is a poison, I believe it also hurts plants and might throw the ecology of the soil out of balance, kind of like when you take antibiotics.  We don’t want the soil to be sterile.  Life needs life.  Plants need certain microbes to live in the soil.  Chlorine would kill those microbes.  So this AC water condensation seems like a perfect match for the garden plants.

The AC provides a steady stream of condensation water.

The AC provides a steady stream of condensation water.

Pure water from the AC gets around that problem, since there are no poisons in it.  The plants should do better without the Chlorine.  I’ve been using this water successfully in my garden for years.  The garden should benefit from the AC water.

What is the pH of AC water condensation?

I would assume the pH of this water is neutral (7.0) since it is pure water. If distilled water is set out in the open air, it will start absorbing CO2 and it will turn slightly acidic (6.0 ~ 6.5). That would be OK, because tomatoes prefer a soil that is slightly acidic.

In comparison, I think city water (with Chlorine) is usually basic, around 8.0, which tomato plants would not like. Rainwater is acidic at 5.6. AC water will have a pH between rainwater and city water.

Reference:  https://mynortherngarden.wordpress.com/2008/03/27/water-ph-and-your-plants/


The hotter it gets outside, the more the AC runs, and the more water the AC makes.  As the summer progresses, it gets hotter, and the plants will need more water.  This system helps, providing more water when it is needed most.

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