How Does a Dehumidifier Work?

Unless you live in a humid climate, you may not give much thought to your home's humidity level. But too little or too much humidity can significantly impact your comfort and indoor air quality.

This blog post will look closely at how dehumidifiers work and explore the benefits of using one in your home. So, if you're curious about these machines, keep reading!

What Is Humidity and How Does It Affect Your Indoor Space?

Humidity is the amount of water vapour in the air. Water vapour is the gaseous state of water and is invisible. Humidity indicates the likelihood for precipitation, dew or fog to be present. The higher the humidity, the more water vapour is in the air.

Humidity can have an impact on your indoor space in a few different ways. Higher humidity levels can lead to condensation on surfaces like windows and walls. This can cause paint to peel, mould to grow and wood to warp. In extreme cases, it can even cause structural damage.

Lower humidity levels can be just as problematic. Dry air can cause static electricity, respiratory problems and increased susceptibility to illness. It can also make wood floors and furniture more likely to crack.

The ideal humidity level for indoor spaces is between 30% and 50%. This can be achieved through the use of a humidifier or dehumidifier. By maintaining proper humidity levels, you can create a more comfortable and healthier environment.

What Does a Dehumidifier Do?

How does a dehumidifier work? A dehumidifier is an appliance used to remove moisture from the air. This can reduce or eliminate problems caused by high humidity levels. Dehumidifiers draw in moist air and pass it over a cold coil. As the air passes over the coil, the water vapour condenses and is collected in a tank.

Dehumidifiers come in a variety of sizes and styles. Some are small and portable, whilst others are larger and designed for whole-house use. Some models can also be connected to your HVAC system.

No matter what dehumidifier you choose, it needs to be emptied regularly. The frequency will depend on the size of the unit, the humidity level and the temperature. Most dehumidifiers have an indicator light that will tell you when the tank is full.

Benefits of Using a Dehumidifier

A dehumidifier can be beneficial for several reasons, including reducing the risk of mould and mildew growth, eliminating musty odours and making your home more comfortable overall.

Using a dehumidifier can be especially useful if you live in an area with high humidity levels or have certain health conditions that can be exacerbated by dampness (such as asthma or allergies).


In addition to the direct benefits of using a dehumidifier, reducing the moisture in your home can also help to prevent damage to your furniture, floors and walls. Excess humidity can cause wood to warp, paint to peel and wallpaper to blister. By keeping the air in your home drier, you can help to protect your belongings from moisture damage.

What Are the Primary Types of Dehumidifiers?

Dehumidifiers are classified into three types: refrigerant, desiccant and the whole house.

  • Refrigerant dehumidifiers work by using a cooling coil to lower the air temperature. As the air temperature drops, so does the amount of water vapour the air can hold. The water vapour condenses on the cooling coil and is collected in a tank or drained away through a hose.
  • Desiccant dehumidifiers use a substance that absorbs moisture, such as silica gel or calcium chloride. The desiccant material is located in a rotating drum exposed to humid air. As the drum rotates, the moisture is absorbed by the desiccant material and collected in a tank.
  • Whole-house dehumidifiers are installed as part of your home’s HVAC system. They work by circulating the air from your home through a moisture-removing filter. The filtered air is then circulated back into your home.


Which type of dehumidifier is right for you depends on various factors, including the size of your home, the humidity level and your budget. If you live in an area with high humidity, you’ll need a unit with a higher pint rating to achieve the desired results. If you have allergies or a health condition, it’s highly advisable to talk to your doctor to determine the best dehumidifier that’ll fit your needs.

How Do You Compare Dehumidifiers? 

When you are in the market for an air dehumidifier, you will want to consider certain factors before purchasing. The following is a list of features to look for when comparing dehumidifiers:

  • The capacity of the unit: How many pints of water can the air dehumidifier remove from the air daily? A unit with a higher capacity will be better able to handle larger spaces or more humid conditions.
  • The size of the unit: Dehumidifiers come in a variety of sizes. Be sure to choose a unit that is appropriately sized for the space you wish to use.
  • The noise level: Some dehumidifiers can be pretty noisy. If you want a unit to use in a bedroom or quiet space, choose one with a low noise level.
  • Energy efficiency: Dehumidifiers can vary significantly in terms of energy efficiency. Choose an Energy Star rating unit to ensure it will not considerably increase your energy bill
  • The warranty: Most dehumidifiers come with a warranty of at least one year. However, some units may have a longer or shorter warranty. Be sure to compare warranties before making your purchase.

XPOWER: The Best-Selling Dehumidifiers in Australia

Whether you live in a humid climate or your indoor air is moist and often exposed to leaks and flooding, dehumidifiers can be your indispensable home appliance. Are you looking for a dehumidifier? Be sure to get your dehumidifier from us.

XPOWER offers quality dehumidifiers with unparalleled performance. Check out our products here. We’re confident you won’t find a better deal elsewhere.