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Dehumidifier guide

Find the best dehumidifier to combat condensation, damp and mould growth in your home.

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Dehumidifier guide.

What is a dehumidifier?

Dehumidifiers are electronical appliances that suck moisture out of indoor air. They are commonly used in areas of the home with high levels of humidity, places where pollutants, allergens and bacteria often develop and thrive.

Understanding dehumidifiers

How does a dehumidifier work?

Most dehumidifiers work by drawing air from around the room through a series of very cold coils. When warm, humid air hits these coils, it condenses to form tiny droplets of water which drip down into a water collection tank. The air is then reheated before being released back into the room.

Benefits of dehumidifiers

Dehumidifiers have many benefits. For one, they reduce damp, mould and mildew and the musty odours that accompany them. Another advantage is that they remove the airborne impurities that can trigger allergies. Lastly, by extracting moist air, they make homes healthier, drier and more comfortable.

Types of dehumidifiers

Dehumidifiers typically fall into two categories - refrigerant or desiccant. The refrigerant models remove moisture by cooling and condensing indoor air. In desiccant dehumidification, water vapour is stripped from the air by moisture absorbing chemicals such as silica gel.

Dehumidifier reviews

Dehumidifier features

Here are some features to consider when choosing a dehumidifier for your home.

Litre capacity

The capacity of a dehumidifier is measured by the litres of moisture it collects over the course of a day. If you’ll be using your dehumidifier in a room that is prone to dampness, opt for a model with a higher litre capacity.

Noise level

Some models of dehumidifier are louder than others. So, if you're planning on running a dehumidifier in a quiet environment such as a bedroom or nursery, look for one with a noise level under 45 decibels.

Laundry drying

A dehumidifier with a laundry mode will draw wetness away from your clothes so that they dry more quickly. This is especially useful in the winter months when it’s often too cold to hang clothes outside.

Low temperature operation

Using a dehumidifier in a cold environment such as a basement or garage requires frost control. This feature prevents ice from building up inside the machine, which can cause the dehumidifier to lose performance or shut down.

Choosing the best dehumidifier for your home

What size dehumidifier do I need?

The size of dehumidifier you’ll need is dependent on how large and damp the space is you want to dehumidify. Typically, a space with moderate humidity will require a machine that extracts around 10 to 30 pints a day. For smaller spaces like laundry rooms, wardrobes and cupboards, a low-capacity dehumidifier will suffice.

How much does a dehumidifier cost to run?

The cost to run a dehumidifier varies depending on its energy rating, size and usage. Some models are more energy efficient than others, providing the same amount of dehumidification while using less electricity.

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