Sure you have noticed that there is a small pipe attached to your air conditioning unit it that has water draining out of it. The pipe is a drain for A/C condensate. A/C Condensate is water vapor that is pulled from the air by your air conditioner as it works to cool the environment inside your home. This water is mineral free, pure water that can & should be recycled. While I would not drink the recovered A/C condensate, your plants will love it. Watering your plants with A/C condensate recycled water is another way to recycle while also saving on your water bill. I pour the A/C condensate water from the catch pan to a 5 gal. bucket to warm up before watering the garden.