If you have never heard of a water distiller, you may ask a question like this: what is a water distiller?

Actually, a water distiller is an appliance that is used to make distilled water through a process of distillation.

Well, another question is “what is distillation?”

Basically, our water contains many types of contaminants, like heavy metals, chemicals, salts, etc. In order to remove these contaminants, we can use this method – distillation that is a process of removing contaminants in the water.

Firstly, the source water is heated up to accelerate its evaporation speed. Once the temperature reaches its boiling temperature, the water is boiling and the process of vaporization happens fiercely, which will produce a large amount of steam. And then, hot steam rises and will be collected and condensed into liquid water again, while most other contaminants are left in the source water. Therefore, this process of distillation separates pure water from contaminants. In a word, distillation is a method that is used to purify water.

On the market, there are plenty of water distillers with different sizes, designs, distilling speed and other options. All of them are able to purify water by removing approximately of the contaminants in the source water. Although the purchase cost of a distiller may cost you some money, such a water distiller can save you more money in the long run, compared with buying bottled water.

Generally, the initial cost will be 200 to 650 dollars, but this is not a big problem. In a short time, it will pay for itself. You can make 1 gallon of purified water at the cost of only 25 cents and you don’t need to buy bottled water any more. 1 gallon of bottled water may cost about 1 dollar or more. This means making distilled water at home can save you much more money instead of buying bottled water. And you don’t need to spend hundreds of dollars on bottled water every year. And bottled water is not environment-friendly.

How Does a Water Distiller Work?

what is a water distillerWith a home water distiller, it is pretty easy to make distilled water at home. Here are the steps.

A water distiller has a boiling chamber where water is heated up to its boiling point. So the first step is to fill the boiling chamber with source water, like tap water, well water, etc.

Under the boiling chamber, there is a heating element providing enough heating to heat up the chamber

Water begins to evaporate and becomes water vapor or steam in the boiling chamber.

Hot steam rises up. And there is a built-in vent to allow the hot steam to go through.

Other contaminants are left in the boiling chamber, while liquid water becomes steam that is led to another place.

Hot steam finally enters a condenser to be condensed. After that steam will become liquid water again. Mostly, in order to condense water vapor, a fan or cool water is used to cool the condenser outside. Generally, the condenser is formed like a coiled tube.

Some distillers also come with a carbon filter which is able to remove volatile organic compounds in the result water. These gas are evaporated together with water.

Water distillers use a separate tank or container to collect distilled water.

Why do you need clean water? – The importance

We need to drink water every day. The water quality is very important. Distilled water offers extraordinary purity and many benefits to our body. The quantity and quality of the water we drink may affect the quality of our tissues and their resistance to diseases and injuries. Therefore, water is very important to our health. If the water contains many contaminants, our body has to deal with them and try to eliminate them from our body. However, some contaminants cannot be broken down or cannot be eliminated by our organs, resulting in destroying our health. If we drink high quality water, our body doesn’t need to try to eliminate contaminants from the water but focus on other waste. Drinking high quality water can improve the efficiency of our bodies and can result in better absorption of healthy minerals and essential vitamins.

History of Water Distillers

Well, we use a water distiller to distill water. Actually, distillation is not a new method. It is as old as our earth. You may hear of “Hydrologic Cycle” which is the process of distillation. We know that our earth is covered by water. We have oceans, seas, rivers and lakes. Natural distillation happens every day. The surface water of the earth is heated by the sun and is evaporating and finally becomes steam. Steam rises and forms clouds in the sky. When temperatures drop, vaporized water cools and condenses, and finally forms rain or snow. In the end, rain or snow drops to the earth’s surface. This cycle completes. And rain and snow can absorb dirt in the air, which can purify the air. Therefore, distillation happens anytime and widely.

Advantages & Disadvantages of Having Water Distillers

For many people, it is not easy to make a decision on buying such a home water distiller. Once you have known its advantages and disadvantages, you can make a wise purchasing decision.


  • Distillers are prone to be easy to use. No installation is required. And you just need to pour water into it and plug it in.
  • Distilled water is the purest water in the world. With a distiller, up to 99% contaminants can be removed.
  • Distilled water has many benefits: improving water taste, drinking clean water, no contaminants, etc.
  • An easy way to access pure water.
  • Cost you less than buying bottled water


  • The initial cost is very high, similar to a RO system.
  • Its carbon water filter should be replaced every 2 months.
  • It needs more energy.

Well, my suggestion is that if you value water quality, a distiller is a good choice. Once you use a distiller, you will find how dirty the regular water is. After distillation, you will find a large amount of limescale at the bottom of the boiling chamber. Of course, read the water distiller reviews first, and you can know whether a specific model suits your need.

The history of human distillation?

Human distillation can date to ancient Greece. Sailors used a pot to boil sea water and they hang sponges over theses pots to condensed steam and collect water. Once these sponges were full, sailors could easily squeeze water out from these sponges. They found the result water was not salty and could be drinkable. This can be called the early stage of distillation.

Nowadays, making distilled water becomes much easier. We can use a home water distiller at home or some commercial water distillers can produce a huge amount of distilled water at a time. Distillation becomes more and more efficient and it is an effective method to purify water, helping us to remove many types of contaminants in our water. At least, if you have a countertop water distiller, you will find it is so easy to access pure water without chemicals, heavy metals, bacteria and viruses, and other contaminants.

What Is Distilled Water Used For?

Our earth actually is covered with water and land. However, the water part is about 70%. This doesn’t mean these water is potable. On the contrary, most water is not potable and not suitable for daily use. Therefore, if we want to use it, we need to purify it at first. Distilled water is the purest water in the world, because it is free of chemicals, heavy metals, bacteria, virus, and other types of contaminants. It only contains water molecules. Due to its superb purity, it is widely used and recommended in many fields.

  1. Tap water is not pure and has many contaminants. It is not suitable for aquarium fishes. Therefore, distilled water can extend their life.
  2. Surgeries should be done under in asepsis condition, so the water for cleaning should be pure, which can help to prevent any infection. Of course, doctors or nurses use distilled to wash and clean wounds.
  3. Many cooling systems use it for cooking. If the water is not pure and contains ions and minerals, these minerals and ions will built up, which will cause serious problems, such as premature failure, excessive energy consumption, etc. If this happens, you may need to cost money on repair your cooling system.
  4. Many beverages manufacturers use it to make high quality drinks, because this can improve its taste.
  5. It is widely used in ships. We know that sea water is not potable. Therefore, to get potable water, seawater is distilled to remove salts and other matters. Besides for drinking, distilled water is an essential coolant for nuclear-powered ships.
  6. It is perfect for various biological, chemical and industries laboratories, because they need superb pure water. In some cases, in order to get an exceptionally purified water, double distilled water is used.
  7. For electric steam irons, distilled water is the only choice. Because it doesn’t contain any minerals, it is able to protect your steam iron and extend its lifespan.
  8. Distilled water is also widely used in Lead acid batteries. Because tap water contains many contaminants that release many ions in the water, tap water is not suitable for batteries. Or these ions can do damage to the battery, reducing its lifespan.
  9. Also thanks to its purity, it is perfect for the skin and it is able to help to block microscopic pores on the facial skin.

Myths and Misconceptions about Distilled Water

No matter you are the first time to drink distilled water or you have been drinking it for many years, there are many misleading messages about distilled water which may make you feel worried. Some of them are right, while others exaggerate the harm of drinking distilled water. Don’t worry. Now, let’s reveal the truths one by one.

Myth 1: Distilled water is prone to absorb carbon dioxide in the air, so it is a little acidic if it is in contact with air.

Fact: This is true. The pure distilled water doesn’t contain any other substance. Its pH is 7.0. However, it is not stable. When it touches air, it will absorb the CO2 in the air, forming H2CO3. That’s why it becomes acidic. However, it only absorbs a little CO2 in the air, so the pH is near 7. And this doesn’t influence our body’s pH. So, don’t worry about it. H2CO3 is not stable too. If it is heated, CO2 will be released from the water. Therefore, this is not a problem at all. And the intake of magnesium and calcium from alkaline food is very important our health.

Myth2: If we use distilled water to cook food, minerals will be pulled out and this can lower the nutrient value.

Fact: Well, cooking food will lower the foods’ nutrient value is true, but this doesn’t mean cooking food with other types of water can avoid the nutrient loss. Therefore, no matter which type of water you use to cook food, the nutrient loss cannot be avoided. A good suggestion is to steam food instead of cooking them. This is because the food’s water will seldom pull out of the food and nutrients can be kept better.

Myth3: The unhealthiest commercial beverages we consume are made from distilled water, like coke and other soft drinks.

Fact: Well, this is not true. For example, Coca-Cola said their beverages are not made from distilled water. Actually, besides other ingredients, the water is not a concern. Other ingredients or factors determine the health of a beverage.

Myth4: Drinking distilled water may cause mineral deficiencies, because it doesn’t contain minerals and will pull minerals from our cells and bones.

Fact: Of course, distilled water is easy to dissolve inorganic minerals, because it doesn’t have. However, the dissolving amount of minerals is very little. When we ingest water, it is neutralized. Another fact is that most parts of minerals we get is from food not from water. The regular water (eg: tap water, well water, river water) only has few minerals in it. Therefore, this is not a problem. And if you also feel afraid of this, why not mineralize it by adding other foods or fruits in it, like oranges, lemons, or a few of rice, etc.

Myth 5: Drinking distilled water can cause high blood pressure and heart beat irregularities during your fasting, because it lacks electrolytes (like sodium, chloride, potassium) and other trace minerals.

Fact: Well, what are trace minerals? At least, magnesium is not. If you only drink distilled water during your very long fasting, this would begin in the process of starvation. This means the mineral-leaching theory is true, but this has nothing to do with the normal human nutrition.

The Bottom Line

As one type of electrical appliances, water distillers are used to distill water and help us get distilled easily. On the market, there are many kinds of water distillers and some of them are designed to be compact. These home or countertop water distillers are perfect for family use. Of course, there are also large models that are ideal for commercial or industrial use. And you can check our Top 10 Best Water Distillers – Your ultimate Guide for Distilling Water at Home.

Distilled water is considered as purest water and is safe to drink. How does a distiller work? During the process of distillation, tap water is heating to its boiling point and begins to evaporate. After the process of condensation, steam turns into liquid water. And this process separate water from other contaminants (like minerals, bacteria, virus, salts, organic compounds, etc.)

The health of drinking distilled water is also a controversy topic. Some people think it is safe and healthy to drink distilled water due to its superb purity, while others don’t agree with this. They said distilled water tastes plain because of the loss of minerals in the process of distillation. However, they also say refresh distilled water tastes better than the distilled water which has been stored for some time.

If you want to treat water easily, water distillers are a method. It is safe and affordable. And distilled water from a distiller also tastes good. This is because some models on the market add back healthy minerals, improving the water taste. It is highly recommended to check water distiller reviews to learn the pros and cons. After that, you will have enough reason which one is the best.

Everyone cannot live without water and we need to consume enough water to keep healthy. Generally, we need to drink 8 to 10 glasses of water every day. Drinking enough water has many benefits:

  • Purify the blood
  • Clean organs, including liver, colon and kidneys.
  • Flush waste out from our body
  • Drinking enough water can make you have healthy skin.
What is a Water Distiller? – Definition and Why Do You Need a Water Distiller

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