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What is a dehumidifier? +

A dehumidifier is a device that removes excess relative humidity from the environment, ensuring a healthier air and creating a more suitable atmosphere for activities that require controlled humidity.
Humidity level represents the amount of water present in the air. The ideal range for health and well-being is around 50% to 60% humidity. If it falls between 35% and 40%, the air is too dry. Between 65% and 80%, the air is too humid, which can be detrimental to health, objects, equipment, and materials. Above 90%, the air becomes extremely humid, increasing the risk of mold and mildew formation, as well as the proliferation of dust mites, fungi, and bacteria.
With residential, commercial, or industrial applications, an air dehumidifier ensures the control of humidity levels as needed.

Why should I use an air dehumidifier at home? +

Using a dehumidifier is important to control the air humidity within the recommended range of 50%-60%, as indicated by the World Health Organization (WHO). This helps protect residents from respiratory illnesses and preserve the integrity of belongings in the environment.

Environments with humidity levels above 60% become favorable for the proliferation of dust mites and fungi, microorganisms that can cause respiratory allergies and skin diseases (such as scabies, for example). They can also lead to the deterioration of furniture, clothing, and objects.

Dust mites are microscopic organisms that are present in large quantities on the surfaces of mattresses, sofas, pillows, carpets, curtains, among others. Recognized as allergens, they can trigger asthma and rhinitis attacks.
The most effective way to control dust mites is by maintaining proper humidity levels and ensuring thorough cleaning of the environment.

Fungi, which rapidly multiply, are responsible for causing grayish and greenish stains on clothing, objects, walls, and wooden furniture. When dispersed in the air, they can also cause allergies when inhaled. Fungi belong to the kingdom Fungi and encompass over 30,000 species. They consume a wide range of materials, including leather, paper, wood, metal, artworks, books, modern electronics, carpets, curtains, and cabinets – essentially anything.

The higher the humidity and temperature in the environment, the more favorable the conditions for their proliferation. Even the healthiest individuals, when frequently exposed to dust mites and fungi, can develop certain illnesses.

Does using an air dehumidifier benefit health? How does humidity affect my health? +

The effects of air humidity on health can vary depending on the level at which it exists.

Low air humidity, often reported on television, hampers body hydration and slows down bodily functions. Symptoms of low humidity impacting the body include dryness in the eyes and mouth, throat irritation, decreased nasal mucus production, and, in severe cases, bleeding.

On the other hand, excessive humidity, commonly found indoors, promotes the development of respiratory diseases and allergies. Above 60% humidity, it creates favorable conditions for the proliferation of dust mites and fungi, microorganisms that rapidly grow and trigger rhinitis and asthma attacks. Common symptoms include sneezing, throat irritation, eye and nasal irritation, and difficulty breathing.

Fungi are also responsible for mold and mildew formation on walls, objects, and even food. These microorganisms release mycotoxins, toxic substances that, when ingested or inhaled in high quantities, can cause complications, particularly in the kidneys and liver.

The Desidrat air dehumidifier controls the humidity levels in the environment, preserving health and preventing the proliferation of harmful microorganisms, without drying out the air. Simply select the desired humidity level on the control panel.

In practical terms, how does the dehumidifier work? How is humidity removed from the air? +

Once we plug in the air dehumidifier and set the desired humidity level on the control panel, the humid air is drawn into the dehumidifier by a fan. The air then comes into contact with a cold coil, causing a temperature difference that leads to condensation. Once the vapor is transformed into water, it drips into the reservoir until it becomes full and the dehumidifier automatically shuts off. The dry air is then released back into the environment with controlled humidity between 50% and 60%.

An environment should not be too dry or too humid. The ideal humidity range for human health, according to the World Health Organization (WHO), is between 50% and 60%. By using a dehumidifier, it is possible to control the air humidity accordingly.

What is the difference between a dehumidifier, air purifier, and sterilizer? +

There are many options in the market to improve and maintain air quality, including dehumidifiers, purifiers, and sterilizers. Despite their distinct names, many people are still unsure about the exact function of each and the differences between these devices.

A sterilizer's function is to heat the air to the point where it kills fungi, dust mites, and bacteria. It does not have filters, and the room temperature cannot be regulated. It lacks a fan to force air through the heating element, so its efficiency is limited to the air in close proximity.

A purifier, on the other hand, filters the air in the environment. Dust, cigarette smoke, pet dander, and pollen are some of the impurities that are captured by the filters inside the device. A fan forces the air through activated carbon and HPP filters, returning the air to the atmosphere with a 99.7% higher level of cleanliness. However, it does not eliminate the conditions necessary for microbial life, such as humidity, so they can reoccur.

An air dehumidifier removes excess moisture in the form of vapor from the air. In other words, this device allows for the control of humidity levels within a space. By controlling humidity, it prevents the proliferation of dust mites, fungi, and other microorganisms that rely on moisture for survival. Additionally, the fan draws air from the environment, which then comes into contact with a wet curtain that can trap up to 90% of suspended particles, including household dust. This effectively filters the air in the environment and reduces the inhalation of allergens.

Do I need a dehumidifier if I already have an air conditioner in the room? Why? +

Yes, it is still necessary to have a dehumidifier even if you have an air conditioner. While both appliances use condensation technology, there are some fundamental differences between an air dehumidifier and an air conditioner.

Let's understand what air humidity is...

Relative humidity refers to the amount of water vapor dispersed in the atmosphere. It influences temperature, thermal sensation, and periods of rainfall.

Relative humidity values can range from 0% to 100%, with 100% representing the maximum amount of water vapor in the air. High humidity levels (above 65%) can be detrimental to health and lead to the deterioration of material possessions. Therefore, it is important to dehumidify the environment.

A dehumidifier is specifically designed to remove excess moisture from the air, while an air conditioner is primarily intended to regulate the temperature of the environment.

Although some air conditioner models have a "dry" function (also known as a dehumidifying function) that removes some condensed water, its performance for this purpose is significantly lower when compared to a dedicated dehumidifier. For example, in the Desidrat Design line, there are residential dehumidifiers capable of extracting up to 20 liters of water from the air per day.

After running for a long time, an air conditioner can excessively dry out the environment as it lacks effective control over humidity. When it reaches this point, it will have consumed a considerable amount of electricity. Excessively dry air can cause irritation to the respiratory system, especially for those who suffer from respiratory conditions.

On the other hand, a dehumidifier is equipped with a sensor called a hygrostat, which constantly measures the humidity level. When the device reaches the set humidity percentage, it enters standby mode, maintaining only the ventilation function.

According to the World Health Organization (WHO), the ideal humidity levels for human health range between 50% and 60%. These levels can be maintained through the use of a dehumidifier with a hygrostat.

A dehumidifier intelligently controls humidity levels while saving energy.

During the winter season when air conditioners are typically not in use, humidity control becomes even more necessary. Due to lower temperatures, residences tend to be closed, leading to an accumulation of excess humidity caused by hot showers, cooking, drying clothes indoors, among other factors.

The use of a dehumidifier is recommended throughout the year, and its operation does not cause uncomfortable temperature variations in the room where it is installed.

Moreover, a dehumidifier is essential in rooms with higher moisture accumulation, such as bathrooms, kitchens, and laundry rooms, where the use of an air conditioner is not as common and may not yield satisfactory results.

What is the ideal humidity level in the air during winter and summer? How can it be measured at home? +

It is believed that the climatic variations between the two seasons require people to adapt to a new level of air humidity. However, regardless of the season, location, or environment, the safe humidity level for humans, animals, and plants remains the same.

According to the World Health Organization (WHO), the ideal relative humidity (RH) for everyone is between 50% and 60%. Above or below this range, humidity can pose risks to health and material possessions.

In enclosed spaces such as rooms in the house, you can use a digital hygrometer or datalogger to measure the humidity level. Some models of Desidrat air dehumidifiers also provide measurements of humidity and temperature in the environment.

It is important to note that excessive humidity indoors can occur both in summer and winter, as internal and external humidity levels are not necessarily equivalent and tend to vary based on factors such as:

  • The number of people and plants in the environment.
  • Activities such as bathing and cooking.
  • The number of doors and windows in the area.
  • And other factors.

If you are curious about the humidity level in your city, you can consult the website of INPE (National Institute for Space Research). There, you can find information about humidity levels and air quality in different regions, including which neighborhoods may have higher risks associated with humidity.

Does low humidity also have negative effects on health? Is a humidifier good for health? +

Low humidity in the air can also have negative effects on health, which is why there are alerts on television. When humidity levels drop below 30%, regions are put on alert. In response to dry air, the body shows signs such as dry skin, throat, and difficulty breathing caused by nasal passage irritation.

When facing such low humidity levels, many people use air humidifiers, which are electrical devices that distribute tiny droplets of water in the form of mist throughout the environment, increasing the relative humidity without proper control.

However, it is important to be cautious because the air indoors is naturally more humid due to the moisture generated by daily activities, such as hot showers and cooking. Even our own bodies contribute around 15% of humidity to the indoor environment.

Remember that excessive humidity also has negative effects on health and creates an ideal microclimate for the proliferation of fungi, mites, and bacteria.

On the other hand, a dehumidifier controls humidity levels by removing excess water vapor from the air through the condensation process. It ensures that humidity levels are within the ideal range, avoiding health issues caused by either insufficient or excessive humidity.

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