What Does a Dehumidifier Do? Discover the Benefits for Your Home

Having a dehumidifier at home can be incredibly beneficial to ensure a comfortable, healthy living space with humidity levels at an ideal level. But, what does a dehumidifier do? 

Dehumidifiers help control moisture levels and improve overall air quality in your home—which is especially important during humid, warm summer months! There are many benefits of a dehumidifier in Brisbane and other hot and humid areas,  from reducing allergens present in indoor air to keeping energy costs low and eliminating bacteria-laden mold development.

Keep reading to learn how to use your dehumidifier correctly so that it works its best for your home environment!

Definition of Humidity

plants hanging in macrame planters from a window

Humidity refers to the presence of water vapor or moisture in the air. It is an essential factor that affects the quality of the air we breathe and the comfort of our living environments.

The moisture content in the air can vary based on factors such as temperature, location, and weather conditions. Understanding humidity and its measurement is crucial for creating a healthy and pleasant indoor atmosphere.

Humidity plays a significant role in maintaining our comfort and overall health. High humidity levels can make the air feel heavy and muggy, leading to discomfort and difficulty in regulating body temperature.

It can also create an environment conducive to the growth of mold, mildew, and dust mites, which can trigger allergies and respiratory issues.

On the other hand, low humidity can result in dry skin, irritated nasal passages, and increased susceptibility to respiratory infections. It can also cause damage to wooden furniture, musical instruments, and other materials that require proper moisture levels.

What Does a Dehumidifier Do?

a dehumidifier in an empty room

Dehumidifiers are essential appliances for maintaining comfortable indoor humidity levels in your home. They remove excess moisture from the air and deposit it into a collection bucket or a hose connected to a drain.

By keeping humidity levels in check, dehumidifiers prevent the growth of mold and mildew, reduce pests such as dust mites and cockroaches, and even help to prevent metal objects from rusting.

When choosing a dehumidifier, it’s essential to consider the size and square footage of your space and the amount of humidity present. With some knowledge and the right dehumidifier, you can enjoy a clean, healthy, and comfortable home environment all year round.

Benefits of Using a Dehumidifier in Your Home

If you’ve ever experienced a muggy day, you know how uncomfortable it can be to feel sticky and hot. Now imagine feeling that way inside your own home. If your answer is “gross,” you’re not alone. When maintaining a comfortable home environment, humidity levels are crucial.

This is where dehumidifiers come into play, as they help remove excess moisture from the air, making it easier to breathe and creating a more pleasant indoor living space.

Additionally, using a dehumidifier can help prevent the growth of mold and mildew, which can be dangerous to your health. So, not only does using a dehumidifier create a more comfortable environment, but it can also help maintain your family’s overall well-being.

The benefits of using a dehumidifier in the home include:

  • Enhancing indoor air quality
  • Dealing with allergens and airborne diseases
  • Alleviating asthma
  • Keeping mold and mildew in check
  • Controlling humidity levels in your home
  • Protecting belongings
  • Drying clothes and carpets
  • Maintaining ideal temperature conditions

Dealing With Allergens and Airborne Diseases

a white living room with a fiddle leaf fig tree

When dealing with allergens and airborne diseases, staying informed and taking proactive measures to protect yourself and those around you is essential. This can include keeping your living spaces clean and well-ventilated, washing your hands regularly, and wearing protective gear if necessary.

It’s also crucial to pay attention to any symptoms you may be experiencing and seek medical advice if needed.

Awareness of potential allergens and minimizing exposure can help prevent allergic reactions and protect your respiratory health. Ultimately, taking preventive measures and staying informed can help you to stay healthy and minimize your risk of developing allergies and other airborne illnesses.

A dehumidifier plays a vital role in improving indoor air quality by reducing allergens and respiratory irritants.

Excessive humidity in the air creates an environment that promotes the growth of mold, dust mites, and other allergens. These allergens can trigger allergic reactions and respiratory problems in individuals, particularly those who are sensitive or have pre-existing conditions.

By effectively reducing humidity levels, a dehumidifier combats the conditions that support the proliferation of these allergens, resulting in cleaner and healthier air.

Alleviating Asthma

Asthma is a chronic respiratory condition characterized by inflammation and narrowing of the airways, leading to breathing difficulties, coughing, wheezing, and chest tightness.

Poor indoor air quality, including high humidity levels, can trigger asthma attacks and worsen respiratory symptoms. By reducing excessive humidity, dehumidifiers create an environment that is less conducive to asthma triggers, resulting in improved respiratory health.

Keeping Mold and Mildew in Check

a wall with damp and mold

Mold and mildew are common problems in many households, and they thrive in warm and wet environments. Keeping them in check is crucial for maintaining a healthy and safe living space.

There are several ways to prevent the growth of mold and mildew, including controlling humidity levels, increasing ventilation, and promptly addressing any water leaks or damage.

Regular cleaning and disinfecting with products that contain ingredients like bleach, hydrogen peroxide, or vinegar can also help prevent their growth.

Pay close attention to areas with a high risk of moisture buildups, such as bathrooms, kitchens, and basements. By keeping mold and mildew in check, you can ensure that your home remains free of these potentially harmful substances.

Dehumidifiers are highly effective in inhibiting the growth of mold and mildew, which thrive in environments with high humidity levels. Mold and mildew are types of fungi that can cause structural damage to buildings and pose health risks to individuals.

By reducing excessive humidity, dehumidifiers create an environment that is less conducive to mold and mildew growth, offering several mechanisms to inhibit their proliferation.

Controlling Humidity Levels in Your Home

a dehumidifer in a laundry room

Controlling humidity levels in your home is essential for both your health and the well-being of your home. High humidity can grow mold, while low humidity can cause dry skin and respiratory issues.

To maintain a healthy humidity level, consider investing in a dehumidifier or humidifier, depending on your needs.

Regularly opening windows and doors for proper airflow can also help regulate humidity levels. Monitoring your humidity levels and taking the necessary steps to control them can create a comfortable and healthy living environment for you and your loved ones.

Dehumidifiers control humidity levels through a combination of mechanisms designed to extract excess moisture from the air: 

  • They draw in humid air through the intake vents, passing it through a set of cold coils and turning it into water droplets.
  • The condensed water droplets are collected in a reservoir within the dehumidifier. Depending on the model, the collected water may need to be manually emptied from the reservoir periodically.
  • Once the moisture is removed from the air, the now drier air is reheated by passing it over warm coils called condenser coils. The warm air is then released back into the room but with a reduced moisture content.
  • Many dehumidifiers are equipped with a built-in humidistat, which is a sensor that measures the humidity level in the room.
  • Dehumidifiers also have a fan that circulates the air within the room. The fan draws in air and directs it over the evaporator and condenser coils, facilitating the dehumidification process. The fan also helps to evenly distribute the drier air throughout the room.

Protecting Belongings

Dehumidifiers are instrumental in protecting furniture, electronics, and valuable items from the damaging effects of excessive moisture.

High humidity levels can wreak havoc on these items, causing deterioration, warping, corrosion, and other forms of damage. By effectively controlling humidity, dehumidifiers provide several mechanisms to safeguard these possessions.

Excessive moisture can seep into furniture, causing the wood to swell, warp, or develop mold and mildew. It can also corrode metal components in electronics and damage valuable items, such as artwork, documents, and collectibles.

By removing excess moisture from the air, dehumidifiers prevent the absorption of moisture by these items, thus preserving their condition and longevity.

Dry Clothes and Carpets

clothes on a clothes dryer

Dehumidifiers can help in drying clothes and carpets by reducing the moisture content in the surrounding air. By reducing humidity levels, dehumidifiers create a drier environment.

When clothes or carpets are exposed to this drier air, the moisture within them has a higher tendency to evaporate. This can accelerate the drying process compared to drying in a high-humidity environment.

Maintaining Ideal Temperature Conditions

Maintaining the ideal temperature conditions ensures a comfortable and healthy living environment. The temperature can significantly impact our daily lives, whether at work or at home. In extreme temperatures, both hot and cold, the performance of humans can be affected negatively.

Moreover, ideal temperature conditions can also help reduce the energy costs of homes and businesses by optimizing heating and cooling systems. Maintaining the right temperature can eliminate the need to constantly adjust the thermostat, resulting in a more comfortable and efficient environment.

Therefore, it’s essential to prioritize temperature management to enhance our overall well-being and productivity.

Home dehumidifiers play a significant role in creating a more pleasant living environment by regulating humidity levels and improving overall comfort.


The benefits and purposes of having a dehumidifier for the home should always be considered, especially if you live in a hot and humid climate. Not only does a dehumidifier help to improve air quality, but it also helps to reduce allergens, regulate humidity levels, control mold and mildew, and even maintain ideal temperature conditions.

Dehumidifiers also provide an alternative option for saving energy bills. This is why it is essential to understand the basics of a dehumidifier and take advantage of its potential features to protect your living space better.

Q: How do I determine the right size of dehumidifier for my home?

A: The size of the dehumidifier is determined by the square footage and humidity level of the space you want to dehumidify. You can refer to the dehumidifier’s capacity rating, usually specified in pints per day, to match it with the room size and desired moisture removal capability.

Q: Where should I place my dehumidifier?

A: It’s best to place the dehumidifier in the area of the home where humidity is a concern, such as basements, crawl spaces, bathrooms, laundry rooms, or any other damp areas. Ensure that the dehumidifier has proper clearance for air circulation and easy access for maintenance.

Q: How often should I clean or maintain my dehumidifier?

A: Regular maintenance is important to keep your dehumidifier running efficiently. Clean the air filter regularly according to the manufacturer’s instructions, and check for any dust or debris accumulation on the coils. Additionally, inspect and clean the water reservoir as needed. Follow the maintenance guidelines provided in the user manual for your specific dehumidifier model.

Q: Can I use a dehumidifier in colder temperatures, such as in basements or garages?

A: Most dehumidifiers work best in room temperature conditions. Some models may have a lower operating temperature range, while others may be specifically designed for low-temperature environments. If you plan to use a dehumidifier in colder temperatures, ensure that the model is suitable for the desired operating range and follow the manufacturer’s recommendations.

Disclosure: Some of the links above are affiliate links, meaning that at no additional cost to you, I will receive a very small commission if you click through and make a purchase. These links help to pay the editorial costs of writing a blog. For more information, read my full affiliate disclosure here.

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