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Experts explain how the water produced by air conditioning can be reused in household tasks, along with the necessary precautions to avoid health and environmental risks.
During periods of high temperatures, air conditioning is used for several hours to keep environments more comfortable. At the same time, the water that drips from the drain is usually discarded, although it can be reused in some household activities.
According to widely shared guidelines by climate control and sanitation experts, as well as technical information from air conditioning manufacturers, this liquid is not considered potable. This is because, although it originates from the condensation of air humidity, it comes into contact with the equipment’s internal components, where dust, residues, and microorganisms may be present.
Where does the water dripping from the air conditioner come from?
First, it’s important to understand its origin. The water is formed by the condensation process of the humidity present in the air.
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When the device cools the environment, the water vapor turns into small droplets.
Then, these droplets are directed to an internal tray.
Subsequently, the water is expelled through the equipment’s drain.
Moreover, as this process practically removes the mineral salts normally found in water, the liquid tends not to leave lime stains during the cleaning of some surfaces.
However, precisely because it passes through the interior of the device, this water should not be consumed by people or offered to animals.
How to reuse air conditioner water at home
As long as it is stored correctly, air conditioner water can be used in different household tasks.
For this, experts recommend that it be placed in clean containers, properly sealed, and used within a few days. This way, unpleasant odors and mosquito proliferation are avoided.
Among the main forms of reuse are:
- Washing floors, yards, garages, and balconies;
- Cleaning windows and mirrors, reducing marks after drying;
- Dust removal on outdoor furniture, gates, and handrails;
- Vehicle washing, reducing the appearance of whitish stains caused by minerals present in common water;
- Moistening outdoor areas on very hot days, helping to cool verandas and terraces.
Thus, in addition to reducing waste, reuse can contribute to a more conscious use of water in activities that do not require potable water.
Can the water be used on plants?
On the other hand, some precautions are also necessary.
According to experts, air conditioning water can be used on ornamental plants, as long as it is done in moderation.
As it has a low mineral content, it should not be the only source of irrigation. Therefore, it is ideal to alternate its use with tap or rainwater, maintaining soil balance.
However, its use is not recommended in vegetable gardens, aromatic herbs, and fruit trees. After all, possible impurities present in the liquid may come into contact with food intended for consumption.
Which uses should be avoided?
Similarly, there are applications that are not recommended under any circumstances.
Air conditioning water should not be used for:
- Drinking;
- Cooking;
- Washing fruits and vegetables;
- Filling animal drinking fountains;
- Filling aquariums;
- Using in air humidifiers;
- Putting in irons for ironing clothes.
Guidance based on technical information
The recommendations presented remain current and follow technical guidelines published by manufacturers of climate control systems and institutions related to sanitation and water quality, such as the Brazilian Association of Refrigeration, Air Conditioning, Ventilation and Heating (ABRAVA) and the Ministry of Health, which emphasize the importance of not considering this water potable and restricting its reuse exclusively to compatible domestic activities.
