man setting up a dehumidifier at home

How Dehumidifiers Work

Dehumidifiers work by using a refrigeration process to cool the air in a room or area. As the air is cooled, moisture in the air condenses and collects in a reservoir.

Here is a step-by-step explanation of how a dehumidifier works.

  • The dehumidifier draws in the air from the room or area through the fan.
  • The air passes through a refrigerated coil, which cools the air.
  • As the air cools, moisture in the air condenses on the coil and collects in a reservoir.
  • The humidifier then blows the dehumidified, or dry, air back into the room or area.

Certain dehumidifiers are equipped with a heating component that aids in warming the air while it undergoes the dehumidification process, resulting in a more pleasant atmosphere. The primary objective of a dehumidifier is to eliminate excessive moisture from a room or space, which can effectively lessen the likelihood of mold and mildew growth, enhance air comfort, and safeguard wooden furniture and other belongings from moisture-related damage.

Types Of Dehumidifiers

  • Refrigerant Humidifiers. Use a refrigerant process to remove moisture from the air. They are effective at removing large amounts of moisture but are generally noisier and more expensive to run than other types of dehumidifiers.
  • Desiccant Humidifiers. Use a drying agent (usually a silica gel) to absorb moisture from the air. They are quieter and more energy efficient than refrigerant humidifiers but not as effective as removing large amounts of moisture.
  • Whole-House Dehumidifiers. These larger, more powerful dehumidifiers work as part of the home’s central heating and cooling system, removing moisture from the house. However, they are more expensive to purchase and maintain.
  • Portable Dehumidifiers. These are smaller, portable units that can be moved from room to room as needed. They are a convenient and cost-effective option for small spaces or for people who do not want to install a permanent dehumidifier.
  • Basement Dehumidifiers. These are specifically designed to remove moisture from damp basements and crawl spaces. They are typically larger and more powerful than other types of dehumidifiers and may have features such as a built-in sump pump to remove excess water.

Benefits Of Dehumidifiers

There are several benefits of using dehumidifiers in your home or work place.

  • Reduces the risk of mold and mildew growth; high humidity levels can create an ideal environment for mold and mildew to grow, which can harm your health and damage your home. A dehumidifier can help reduce the humidity levels in a room, which can help prevent mold and mildew growth.
  • Make the air feel comfortable; high humidity levels can make the air feel hot and sticky, which can be uncomfortable. Using a dehumidifier can help to reduce the humidity in a room, making the air feel calmer and more comfortable.
  • Protect wooden furniture and other items; Excess moisture in the air can damage wooden furniture and other items by causing them to warp or rot. A dehumidifier can help to protect these items by removing excess moisture from the air.
  • Improve air quality; high humidity levels can also contribute to the growth of dust mites, which can worsen allergies and other respiratory issues. Using a dehumidifier can help reduce the humidity levels in a room, improving the air quality and reducing the risk of respiratory issues.
  • Save energy: using a dehumidifier can help reduce the need for air conditioning, saving energy and lowering energy bills.


It’s important to keep in mind that using a humidifier can lead to higher energy costs because it may cause your heating system to run more often. However, the actual amount of electricity used will vary depending on the size and model of the humidifier. If you’re concerned about electricity usage or energy costs, consider using a low-energy humidifier or one with an automatic shut-off feature to minimize energy consumption. Dehumidifiers are practical and beneficial appliances for controlling humidity levels in your home. They help prevent the growth of mold and mildew, reduce allergens in the air, and make the air feel more comfortable and fresh. Dehumidifiers are available in various sizes and styles to suit different needs and budgets, and they can be placed in multiple areas of your home. Regular maintenance and cleaning are essential to ensure that your dehumidifier works efficiently and effectively. A dehumidifier can be a valuable addition to any home, especially in humid climates or for individuals with respiratory issues.