AC Water Good Or Bad – Why “Pure Distilled Water” is Bad For You !

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In a properly functioning air conditioner, the water drips down from the coil into a condensate pan and then exits the unit through a drain or tube. … The water that drips from air conditioners is probably even safe for drinking. (It’s certainly more potable than the drinking water in many countries.

I would say maybe, however you risk the potential for the water to have metal particles in it, dust and dirt, and perhaps far worse bacteria that may be unreasonable with you and give you a bad case of the craps. If you filtered it and then boiled it, surely it would be a lot safer and cleaner too. Someone posted about distilled water being the purest water there is.

But this is a partial truth and one so many misunderstand. You see, distilled water is only a little bit cleaner or purer or safer then it was before it was distilled. Its not like distillation just makes everything liquid clean, clear and safe. For example if you distill muddy water then the water that re-condenses into your container will still be slightly muddy looking.

Ive done that experiment to prove it as well. all a water distiller does is makes it a little cleaner with less minerals in it then it originally had. And this works fairly well with tap water given tap water is usually not that dirty or polluted, So distilling your tap water will give you water that is cleaner, purer and with less minerals and toxins then it had previously. Of course there are stages to some distilleries in factories where water is distilled several times and each time in each stage the water gets a little more pure. Where as the regular one stage distiller someone has at home will only get the water a little cleaner. But of course one can re-distill the water several times if one wants.

Please do NOT do that..!!
The water from A/C s comes as a result of dehumidification. Prior to this dehumidification it is in the form of vapor in room air. The process of evaporating of water into air from water bodies and then getting dehumidified by cooling coils resembles distillation process. So, I think, the water coming out of A/C is most probably distilled.

Distilled water lacks minerals and ions. It is pure. If we drink such water, because of concentration gradient the minerals and ions from body cells diffuse out into the water. This results in demineralization of cells finally leads to various problems. I can’t expect how much disastrous it would be if you continue to take distilled water (only) for few days..!!


As I mentioned here, distilled water may or may not be so harmful. But, coming to the actual question, the water may catch some dust etc. before reaching to the drain pipe. consider the path it flows and decide how it can be used.

Can you use water from air conditioner to water plants?
homeLatest NewsCan you use water from air conditioner to water plants?

During these months and these upcoming months, high water rates and water conservation restrictions per household may be imposed. To conserve the water we have, we need to come up with innovative ways to reuse water, in a safe and hygienic way.

We decided to look at the air conditioner since during these hot months we will be using it every day. What do you do with the water from your air conditioner? Do you simply toss it out or have you ever thought that perhaps you could use it to water your plants.

You can use the water from your air conditioner to water your plants, however, this discharged water from evaporative air conditioners contains concentrated levels of mineral salts. Usually it isn’t enough to harm your plants, but if there are unusually high levels of mineral salt then you shouldn’t use it to water your plants.

What other things can we do with our air conditioner to conserve water?


Water from your air conditioner condensation can be used to water your plants, both indoor as well as outdoor. The condensate is pulled out from the air outside, and therefore does not contain chlorine or any other minerals that may be found in drinking water. You can fill a watering-can and connect it to a rainwater colleting system through which you can have it drained directly to your garden. Or you can just keep it and then water the garden yourself.


Air conditioner condensate can be used for decorative water features such as with fountains. If you want to build a backyard waterland, it might be a great project you can undertake to do. With the water from your air conditioner, you can fill up a water fountain as well as a fish pond. You could also use this water as part of your irrigation system for your pond or other water features.


There is nothing wrong with using the water from your air conditioner to clean your verandah or even the inside of your home. In a bucket you can add bleach or soap and with a mop you can go off and start cleaning your home, knowing that the water you’re using is ‘recycled’. You can even use it to clean your cars.

Good things

Now, during these months and the months coming, are the hottest and the time when we use the air conditioner the most. This is when the air conditioner is generating the most condensate. During this period we will have our water rates rise along with water restrictions. Now, using our air conditioner condensate can provide all the water you need to water your gardens on “no watering days”.

This way of using and reusing what you have is not just a responsible thing to do, but it is also a way to save money. You’ll soon see your water bills drop.

For more information contact an air conditioner supplier in Perth who may be able to explain more to you as well provide you with better suggestions to save water with an air conditioner – or you may just want to buy an air conditioner now. Visit your nearest Perth air conditioner supplier and start saving.

Can the water from my AC drain be used for watering?

As California is currently experiencing a serious drought, a customer posed the great question “Can I use the funneled water from my Air Conditioning/Heating Unit to water my plants? Trying to conserve.”

The answer is YES!…with a few exceptions.

The water that you may have noticed coming from a drain on the exterior of your home comes directly from your home’s HVAC system. This is either condensate water produced from your system’s air conditioning evaporative coil in the cooling months or condensate produced from your gas furnace system in the heating months. The water produced form the air conditioner is purely condensate water like that from a cold glass of ice tea on a hot summer day and is totally safe to use and harvest in a bucket outside of your home to water your plants. The only time you would want to shy away from using this water is after you have had a chemical coil cleaning performed on your indoor or evaporative coil. After this type of cleaning you should allow for a period of 14 days for the chemicals to flush out of your condensate drain before using this water. After this time period it is safe to use.
ac water for plant

During the heating months if your home is equipped with a high efficiency furnace it will produce levels of condensate out of this same drain in the heating months. This water, while it may look the same, is highly acidic and is not safe to use for watering.

So, the verdict… In Summer use and harvest the water produced from your condensate drain, which can be up to 2 gallons of water an hour! This is based upon the humidity in the air and the overall tonnage of your air conditioner and avoid this water in the heating months.

It’s all of our responsibility…good luck doing your part to conserve water!

How Much And Where Should An Air-Conditioning Unit Drip?

All room air conditioners drip — or at least they should. But drips in the wrong place or the wrong volume of dripping water may be a sign of a problem with the air conditioner.

Why Air Conditioners Drip

As the name suggests, air conditioners do more than simply cool the air. They help condition the air and increase comfort by reducing humidity. The basic concept is similar to the condensation that collects on an iced drink. The air conditioner’s cooling coil or evaporator absorbs moisture from the room. The airborne water vapor cools into liquid form and then collects on cold surfaces in the air conditioning unit.

How Much Air Conditioners Drip

The volume of dripping condensation from an air conditioner varies widely depending on humidity levels and temperature, as well as several details regarding the size, efficiency and installation of the air conditioner.

On a summer day in a hot, humid climate, each window air conditioner can drip up to two gallons of water per day. Keep in mind that this water can be collected for use in landscape irrigation. Central air conditioning systems can collect 20 gallons of water per day, and some homeowners collect and divert that water for irrigation. On the other hand, air conditioner condensation should not be collected for drinking water because of the risk of lead exposure and other contaminants.

Where Air Conditioners Drip

The condensed water should leak from the back of the air conditioner unit whenever the unit is running. The water drips from the cooling coil into channels that should be angled toward the back of the unit. Some of the water is used to cool heating coils in the machine, but most will drip out of the unit.

If an air conditioner is not dripping, it may not properly be doing its job of dehumidifying the room. If it is dripping from locations other than the back of the unit, you may have a problem.

Troubleshooting Dripping Air Conditioners

Perhaps the most common problem with air conditioner condensation is water dripping out the front of the unit, caused by installation errors. Such drips can ruin furniture or flooring, and may lead to mold concerns. The back of the air conditioner should be slightly lower than the front to encourage proper drainage.

Water dripping from the sides or front of the air conditioner could also be caused by air leaks. If the air conditioner is not properly sealed in place, hot outside air could turn into dripping condensation when it hits the cool air conditioning surface s. You may need to caulk and insulate around the air conditioner to reduce such condensation. This will also boost efficiency and could reduce energy bills.

If the water freezes into ice rather than dripping out, the air conditioner likely needs servicing. If there is no water dripping out, the drains may be blocked, which also likely requires professional service.

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